Timestamp Service
Overview
A timestamp service is one where a user submits some data (or a hash of some data) and gets back a document that proves the data existed at that time.
Traditionally this was done by Trusted Timestamp services. These would sign the data with their keys and return a signed and dated document.
This depended on the trusthwothiness, security and impartiality of the service provider in addition to regular public key infrastructure PKI.
In the blockchain world, we like to ask "Do we really need to trust someone for this? Can we make it trustless?"
The answer is of course, yes, we can. We can take some data and embed it into a transaction that gets folded into the next block in a chain. This is not new, we've been doing this since nearly the start of Bitcoin. Example from myself: Bitcoin Timestamp
However, this means making transactions on the public ledger, which are not cheap. Merkle Trees to the rescue. We can take a bunch of data we want to timestamp, combine it all using a merkle tree and embed that single result in the blockchain. That is the purpose of this project, to be able to make cheap blockchain based timestamps.
Uses
The cheap is super important. Often, we probably won't know the value of data or having a proof on it until much later.
So for example, an app that saved the hash of every picture you took on your phone might be cool. Most wouldn't matter, but it would be nice if you ever needed to later prove that one of the pictures was not edited after the time of the timestamp.
So images, videos, even video streams (if you can get low level enough into the video stream to decide what data to predictably hash on). Documents. Source code. Things I haven't thought of.
API
The API is simple. One call that provides the data to include and the result is some transaction ID for the timestamp. Then some time later, the user can call again with the transaction ID and get the entire proof.
Design
This timestamp service uses Channels as the metadata storage layer. Requested timestamp data is encoded into ContentInfo objects that are placed in Snowblossom Channels blocks for the channel the timestamp service is running as. Then on a schedule, the top channel block is encoded as the tx_extra field in a cryptocurrency transaction.
Once that is done and the resulting cryptocurrency transaction is confirmed into a block, then it is possible for the timestamp service to generate the complete proof all the way from the input data to the block hash of a cryptocurrency block.
The structure of the proof will be a series of hash steps that look like:
M = input data
Each step will define a hash algorithm, a prefix and a postfix string. M = hash( prefix + M + postfix )
The final M will be the block hash of a cryptocurrency block that can be verified with a local node or a block explorer.
All strings are hex encoded binary and all hash operations should occur on the binary data. Put another way, a 64 character long hex string needs to be converted to a 32 byte array before doing any hash operations.
Example proof, which proves that the data_hash of 710150e9eb6d7b7377e75d82f43bb4a84fc3ea42f08ea56bd594c4be7c4fb3b2 was included in Snowblossom Block 0000000000276312f079297412ecd2168f9b21057dc911758984add713c551b8.
The number of steps will depend on the depth of the merkle trees for timestamp data going into the channel block, the number of channel blocks until one that is included in the public blockchain and the merkle depth of transactions in the blockchain.
{
"snow_block": "0000000000276312f079297412ecd2168f9b21057dc911758984add713c551b8",
"data_hash": "710150e9eb6d7b7377e75d82f43bb4a84fc3ea42f08ea56bd594c4be7c4fb3b2",
"proofs": [
{
"output": "49f3b7c82f9086ac4a787b12f28d953271d8e52e6d57fe67c3b6466ed72ef437",
"prefix_data": "0a290801122508011221023bf6b14c3b03f0ed8b9b642dba44167c3535bbd7d68b4a3b32f63ddda746dc8e10b4d3bae3e131aa017f0a20b82b7a9edd0fb5faaacf7b9c7877dedf74f00feb3fd0ffc95ff4203271a94db418202220",
"postfix_data": "2a142e74b7bd6036178436b129bead2095b4a2da0bb0d2012056b2407d8c038a50ad01c546ff7037acd46871fa3a281fbf29ced7e982be2325",
"action": "hash",
"label": "transaction payload",
"mid_data": "710150e9eb6d7b7377e75d82f43bb4a84fc3ea42f08ea56bd594c4be7c4fb3b2",
"algo": "Skein-256-256"
},
{
"output": "d5f022da0cd087b926179af71d5d68d3858926fed74787347b5684b4be97119e",
"prefix_data": "",
"postfix_data": "304502210099df6b4d399ff3e101c04e41b72e62524752c3d287fafe9dfe31ff7ffc23dda902201c985cd2b85847d27ae1c2247c9cc605c67e0e13792db5fba86f266479505ab4",
"action": "hash",
"label": "transaction outer",
"mid_data": "49f3b7c82f9086ac4a787b12f28d953271d8e52e6d57fe67c3b6466ed72ef437",
"algo": "Skein-256-256"
},
{
"output": "411949ff64a54d4301ac5ccbf5e67999c5f4a1d499254f1599f165931a428139",
"prefix_data": "0a290801122508011221023bf6b14c3b03f0ed8b9b642dba44167c3535bbd7d68b4a3b32f63ddda746dc8e10e8c3bde3e131a2016608011090161a142e74b7bd6036178436b129bead2095b4a2da0bb022202b9d8f6a293e4749ff1de445996ab1982ca0c66d2f9e475a0470281d3e6e82363220",
"postfix_data": "38e8c3bde3e131",
"action": "hash",
"label": "block payload",
"mid_data": "d5f022da0cd087b926179af71d5d68d3858926fed74787347b5684b4be97119e",
"algo": "Skein-256-256"
},
{
"output": "565a051329f8dfd2f8c0787ecf97df682d522026e38bf0b4f718a91c4d114ce8",
"prefix_data": "",
"postfix_data": "304602210094127432d522878c481771815f0b08f0dc74c83cf60a2d03dbdb257f3b8619e9022100e591e96ee5cff085bf2ee41b173a6d111c41186dfe4db11b0ee7514520072285",
"action": "hash",
"label": "block outer",
"mid_data": "411949ff64a54d4301ac5ccbf5e67999c5f4a1d499254f1599f165931a428139",
"algo": "Skein-256-256"
},
{
"output": "e312bbac7a5f8134b5dac041a8d858442b5f7e8d1e9fc8e26b7377fbf449bb10",
"prefix_data": "0a290801122508011221023bf6b14c3b03f0ed8b9b642dba44167c3535bbd7d68b4a3b32f63ddda746dc8e10a7edc4e3e131a2016608011091161a142e74b7bd6036178436b129bead2095b4a2da0bb02220",
"postfix_data": "322028cbab24a483b47034af702dbcc8d4e78211bb16901d9bf2669eca3eaf93c06638a7edc4e3e131",
"action": "hash",
"label": "channel block path payload",
"mid_data": "565a051329f8dfd2f8c0787ecf97df682d522026e38bf0b4f718a91c4d114ce8",
"algo": "Skein-256-256"
},
{
"output": "b4cd4316465c7abcd8a4bd6816e9e6970dc4c255d92a05e508e0875f463a9bc0",
"prefix_data": "",
"postfix_data": "3046022100ea4cb42e77918a287ce9bb4c9372dcb56124feba27b210c198a230931b0e4a6c022100dc76a79d68b103d6655d0a0f4cb93c31588b3402c5d360fc697c8bc2400202c7",
"action": "hash",
"label": "channel block path outer",
"mid_data": "e312bbac7a5f8134b5dac041a8d858442b5f7e8d1e9fc8e26b7377fbf449bb10",
"algo": "Skein-256-256"
},
{
"output": "1126cc1f6a30d0790489f5ce40efec834ac9f202503a8697e38b77f7eb70b80e",
"prefix_data": "0a290801122508011221023bf6b14c3b03f0ed8b9b642dba44167c3535bbd7d68b4a3b32f63ddda746dc8e10e796cce3e131a2016608011092161a142e74b7bd6036178436b129bead2095b4a2da0bb02220",
"postfix_data": "322075a3a001c4d79659006842c0118ddd7e2a2a5f0b867e2bd3bf02a3ee9695aaed38e796cce3e131",
"action": "hash",
"label": "channel block path payload",
"mid_data": "b4cd4316465c7abcd8a4bd6816e9e6970dc4c255d92a05e508e0875f463a9bc0",
"algo": "Skein-256-256"
},
{
"output": "1badbbf025a4ed85b9544b07217df889ecd8f60c845458083b723eca0e84d29d",
"prefix_data": "",
"postfix_data": "304402202f0a44742b02709b2961bcd805c507527749d9d0d33ca9bf37bc26c4e83ace95022013c775d28823b283e4a9002d2865cffa014deb55133a9f22aaecf9d7a367c06a",
"action": "hash",
"label": "channel block path outer",
"mid_data": "1126cc1f6a30d0790489f5ce40efec834ac9f202503a8697e38b77f7eb70b80e",
"algo": "Skein-256-256"
},
{
"output": "a258424398a45b6e60804267c8546577b0a22d7de8ddafd1818f28190c6ba1a4",
"prefix_data": "0a290801122508011221023bf6b14c3b03f0ed8b9b642dba44167c3535bbd7d68b4a3b32f63ddda746dc8e10a8c0d3e3e131a2016608011093161a142e74b7bd6036178436b129bead2095b4a2da0bb02220",
"postfix_data": "3220c3383909249d5ae30659888a94dda0397c3247bf4a877c37f4a251ce1861929c38a8c0d3e3e131",
"action": "hash",
"label": "channel block path payload",
"mid_data": "1badbbf025a4ed85b9544b07217df889ecd8f60c845458083b723eca0e84d29d",
"algo": "Skein-256-256"
},
{
"output": "f8b8ce1090d4fb1d0f07bc7e1f7b2eed0bdab5e0ea45e139920a4ad7647d0c50",
"prefix_data": "",
"postfix_data": "3046022100dc8433156e2568c4e43fdfef0d2ce30489980a64adceb5f41f225b3ed341cd720221008769e368c6dffc252198d4c64c298642191f0a7e7a748d516f8031cc57e392c8",
"action": "hash",
"label": "channel block path outer",
"mid_data": "a258424398a45b6e60804267c8546577b0a22d7de8ddafd1818f28190c6ba1a4",
"algo": "Skein-256-256"
},
{
"output": "076e82df4ad0baff75cb9d29b125d24b7c2ba692ad5b11d2e1089f21951a2ac8",
"prefix_data": "0a290801122508011221023bf6b14c3b03f0ed8b9b642dba44167c3535bbd7d68b4a3b32f63ddda746dc8e10e7e9dae3e131a2016608011094161a142e74b7bd6036178436b129bead2095b4a2da0bb02220",
"postfix_data": "32207f1696622d4e1baae075ab6e4a808d32e19a505a75530052dc45c3649e85726438e7e9dae3e131",
"action": "hash",
"label": "channel block path payload",
"mid_data": "f8b8ce1090d4fb1d0f07bc7e1f7b2eed0bdab5e0ea45e139920a4ad7647d0c50",
"algo": "Skein-256-256"
},
{
"output": "d75e66cb7577aa33ca29efe783956ac52ea0d0dc0c594f1fd544d09383edc18a",
"prefix_data": "",
"postfix_data": "3044022003bc9542824945aa70973fb277090546d63f6786e6074eeb34cd13f3c50331b502201f371bc771cb34044e797351ad7554bcab65a2a1c802ab267651a195dcada878",
"action": "hash",
"label": "channel block path outer",
"mid_data": "076e82df4ad0baff75cb9d29b125d24b7c2ba692ad5b11d2e1089f21951a2ac8",
"algo": "Skein-256-256"
},
{
"output": "a1b4b2fdb4a88c7a0be1622969d6ee895f8d277296248e1b3c2ee97857da8bbd",
"prefix_data": "0a290801122508011221023bf6b14c3b03f0ed8b9b642dba44167c3535bbd7d68b4a3b32f63ddda746dc8e10a993e2e3e131a2016608011095161a142e74b7bd6036178436b129bead2095b4a2da0bb02220",
"postfix_data": "322043fb9d34172ff2fe03948270638da9cc412e73ee4cdf472a39afee3d8f3aa6fa38a893e2e3e131",
"action": "hash",
"label": "channel block path payload",
"mid_data": "d75e66cb7577aa33ca29efe783956ac52ea0d0dc0c594f1fd544d09383edc18a",
"algo": "Skein-256-256"
},
{
"output": "fa692ea57b6cc00301b74e43ee883a0ee1ad14e727296cd1185a881d2ac6b334",
"prefix_data": "",
"postfix_data": "304402205d974b41c97dde821edfa37695aeb30958049f4e0847ea119a90197ca99cd30a02204342468b8d9a57c83605011c32e46ceab3ef5af5103f1b9d18e65d82c596cace",
"action": "hash",
"label": "channel block path outer",
"mid_data": "a1b4b2fdb4a88c7a0be1622969d6ee895f8d277296248e1b3c2ee97857da8bbd",
"algo": "Skein-256-256"
},
{
"output": "9aaf7c7a9fa59108595902fd0d5299d0652fab2654ec6a153b66fde9270f5081",
"prefix_data": "0a290801122508011221023bf6b14c3b03f0ed8b9b642dba44167c3535bbd7d68b4a3b32f63ddda746dc8e10e8bce9e3e131a2016608011096161a142e74b7bd6036178436b129bead2095b4a2da0bb02220",
"postfix_data": "3220393a2c4d3b05def1ad3d34ea6aeff9c37473e8025f368f0c61f0b18ef2f77be038e8bce9e3e131",
"action": "hash",
"label": "channel block path payload",
"mid_data": "fa692ea57b6cc00301b74e43ee883a0ee1ad14e727296cd1185a881d2ac6b334",
"algo": "Skein-256-256"
},
{
"output": "e759e9e9e47dd7f12f9d31f3c82a42b3b2497f0a6adda49a8f0113d1cf40d19a",
"prefix_data": "",
"postfix_data": "304502204339a508ecafd9b5a63e9aa60afc5cf8e4b7bc5f665065aee026215016c7b654022100ddb053a9bd0d1468a90d06628237265128b2a9987c9fad7cd9bb221246bd77f7",
"action": "hash",
"label": "channel block path outer",
"mid_data": "9aaf7c7a9fa59108595902fd0d5299d0652fab2654ec6a153b66fde9270f5081",
"algo": "Skein-256-256"
},
{
"output": "0da7eedddb27a71d1f8b966cc38a99e94b147b9afbed4f9caf66dac3f64bcce6",
"prefix_data": "0a290801122508011221023bf6b14c3b03f0ed8b9b642dba44167c3535bbd7d68b4a3b32f63ddda746dc8e10a8e6f0e3e131a2016608011097161a142e74b7bd6036178436b129bead2095b4a2da0bb02220",
"postfix_data": "32200b4ddc38bf088ef57f0cb96a83117257e47e85a9d21064ea65b511f4ee0d37e938a8e6f0e3e131",
"action": "hash",
"label": "channel block path payload",
"mid_data": "e759e9e9e47dd7f12f9d31f3c82a42b3b2497f0a6adda49a8f0113d1cf40d19a",
"algo": "Skein-256-256"
},
{
"output": "97c417aa95f05c7a9a3fbd3cae48941ebb328f53e114c13237e15bd4a30740d9",
"prefix_data": "",
"postfix_data": "3045022100c2945652229417e75d99fdffa11846f64be02ba97dc1e13c9cbe0f2c8a11672d022048a9f74f085cfd468b160596a42453a8d38af3da6a7fe402866d4aff679302a7",
"action": "hash",
"label": "channel block path outer",
"mid_data": "0da7eedddb27a71d1f8b966cc38a99e94b147b9afbed4f9caf66dac3f64bcce6",
"algo": "Skein-256-256"
},
{
"output": "883718f2d638d77a4ebaf2f9ab5953cc53235c38e47d90909be91d88a4ccdb68",
"prefix_data": "0a290801122508011221023bf6b14c3b03f0ed8b9b642dba44167c3535bbd7d68b4a3b32f63ddda746dc8e10e88ff8e3e131a2016608011098161a142e74b7bd6036178436b129bead2095b4a2da0bb02220",
"postfix_data": "32204cb2dd58bcc6eb9d5118e9b17ee8e700fb1b227cb01447303e6852ffd32d4abb38e88ff8e3e131",
"action": "hash",
"label": "channel block path payload",
"mid_data": "97c417aa95f05c7a9a3fbd3cae48941ebb328f53e114c13237e15bd4a30740d9",
"algo": "Skein-256-256"
},
{
"output": "aa78e8bf5cc7fd1eb3ab7c63ad68d3095e946b2b1aeacc9bf01f1fbdde18d513",
"prefix_data": "",
"postfix_data": "30450221009d031ce0c5014ead018dda4a2ba65d7fa2fba1d0f65dc10ac02e6a36219a9a3f022026599e551b57196789152ae2fb9a2ae9f9627501359eeb5d66292a6297ee6cfa",
"action": "hash",
"label": "channel block path outer",
"mid_data": "883718f2d638d77a4ebaf2f9ab5953cc53235c38e47d90909be91d88a4ccdb68",
"algo": "Skein-256-256"
},
{
"output": "9ba69d92a20a944560552d6f8f83512b75bbd15ca89fb5e0c2c6d6df12d0dd74",
"prefix_data": "0a290801122508011221023bf6b14c3b03f0ed8b9b642dba44167c3535bbd7d68b4a3b32f63ddda746dc8e10a8b9ffe3e131a2016608011099161a142e74b7bd6036178436b129bead2095b4a2da0bb02220",
"postfix_data": "32200811b8b7383d841b6c878d6f7dc39ee4a5c6b27e5c055fb5d107c0aa2e0846af38a8b9ffe3e131",
"action": "hash",
"label": "channel block path payload",
"mid_data": "aa78e8bf5cc7fd1eb3ab7c63ad68d3095e946b2b1aeacc9bf01f1fbdde18d513",
"algo": "Skein-256-256"
},
{
"output": "45ad167039ba0ef4cb7af43b7d787bfa35d16d9f18e0d5fa2a2595739f0bd154",
"prefix_data": "",
"postfix_data": "304502207e79e97cf8cef396e3c6a6fcb08aa98390c44182becc393ff13d756d716f0635022100cffce8f2b911d7c930a02857202d4a850c690e1e760517bfabd64e6e37a007de",
"action": "hash",
"label": "channel block path outer",
"mid_data": "9ba69d92a20a944560552d6f8f83512b75bbd15ca89fb5e0c2c6d6df12d0dd74",
"algo": "Skein-256-256"
},
{
"output": "7abe420906b785e5baf20944db6efb4e91e2e387c9f6761cfa5583bd28e90a08",
"prefix_data": "0a290801122508011221023bf6b14c3b03f0ed8b9b642dba44167c3535bbd7d68b4a3b32f63ddda746dc8e10e8e286e4e131a201660801109a161a142e74b7bd6036178436b129bead2095b4a2da0bb02220",
"postfix_data": "3220bfecfcaf4c7bb13c210dcbd643791a988a97f3be42d7453a8fa868e8ac1800be38e8e286e4e131",
"action": "hash",
"label": "channel block path payload",
"mid_data": "45ad167039ba0ef4cb7af43b7d787bfa35d16d9f18e0d5fa2a2595739f0bd154",
"algo": "Skein-256-256"
},
{
"output": "c30aad00cfee24452be412e40bde662bce32c82a89f307ee917733bbbeefea6c",
"prefix_data": "",
"postfix_data": "30450220571a29f8ee83901f537fd013c216390dd07106dfa0d5fa783c52887cbeb6d3c1022100ef805fef432440f5fafbc9d897bcaab79ede7c57e032515755f9b1b2ff909ea1",
"action": "hash",
"label": "channel block path outer",
"mid_data": "7abe420906b785e5baf20944db6efb4e91e2e387c9f6761cfa5583bd28e90a08",
"algo": "Skein-256-256"
},
{
"output": "c3be5a72e6ab2d6fabf3eae673cf4e6491d551946b48a4b2270cf75fc4b4c2bb",
"prefix_data": "080122380a149adb8a3c67660a5ebc8db83f69cf525783f3d17d12204c6c0e011ed421cbda86dceea00c51248516cdfe838f13abcf509d61a186bed02a1b08a0b4e31712149adb8a3c67660a5ebc8db83f69cf525783f3d17d322908011225080112210284bb49bd3f7ddabc1dc8dc257c74e995bcfa62493215710a1f885fed95af127a40d7065220",
"postfix_data": "",
"action": "hash",
"label": "snow tx has channel block hash",
"mid_data": "c30aad00cfee24452be412e40bde662bce32c82a89f307ee917733bbbeefea6c",
"algo": "Skein-256-256"
},
{
"output": "69a7ea6037c7e05899248fdfdff4e5b264ef157509c1ea5b27c477b5795cc804",
"prefix_data": "9468a809e1d7815d0683541931268e9facc17e45ff4a7eabbce7ffcb11a2c997",
"postfix_data": "",
"action": "hash",
"label": "merkle right",
"mid_data": "c3be5a72e6ab2d6fabf3eae673cf4e6491d551946b48a4b2270cf75fc4b4c2bb",
"algo": "Skein-256-256"
},
{
"output": "7115e6ac4f08eda934e1a5ca3e72035b7f224a157cf790906333401cf0064a2d",
"prefix_data": "",
"postfix_data": "4e50cf9f67d76d62d14c1217f279567fa1c54b926315df596b71de929c051fde",
"action": "hash",
"label": "merkle left",
"mid_data": "69a7ea6037c7e05899248fdfdff4e5b264ef157509c1ea5b27c477b5795cc804",
"algo": "Skein-256-256"
},
{
"output": "96968de1dbe63b3723e86d68f672362166b826c7710e9b073fab41a02c0a7796",
"prefix_data": "2c89f35817fc051f865bda04000000020004aeb20000018e1c869322000000090000000000131e991e09fa2694657603c9d26d5578fc582f422c5b71bb9bd337",
"postfix_data": "483d59f8110c4385124fe6750fade03b395eb4a5dda12788b8253ce15085429c00000000002917a199dd3484bc37b0dae90b65578600b4a75e18b0f48429266100000000000002a100000003",
"action": "hash",
"label": "snow pow",
"mid_data": "7115e6ac4f08eda934e1a5ca3e72035b7f224a157cf790906333401cf0064a2d",
"algo": "Skein-256-256"
},
{
"output": "2c6c12de3a5d2b1d7fe3c72c855b443603d9d54dcdc9fd39a6e4ac8c32e0f1cf",
"prefix_data": "",
"postfix_data": "78d974a450cdccd36ab7d61bbb892142",
"action": "hash",
"label": "snow pow step",
"mid_data": "96968de1dbe63b3723e86d68f672362166b826c7710e9b073fab41a02c0a7796",
"algo": "Skein-256-256"
},
{
"output": "11540bc97b97c8d1f381c4f1af2e3688060ce9d437a1308203adc132641c3827",
"prefix_data": "",
"postfix_data": "a4e09416b53b7d140750c6e8d93c347f",
"action": "hash",
"label": "snow pow step",
"mid_data": "2c6c12de3a5d2b1d7fe3c72c855b443603d9d54dcdc9fd39a6e4ac8c32e0f1cf",
"algo": "Skein-256-256"
},
{
"output": "62f52521c688922c4e6d256181e49c6438e2981acae3514d44c3767b06ccfe29",
"prefix_data": "",
"postfix_data": "59d76d65c58f64591a53b69cac1d04da",
"action": "hash",
"label": "snow pow step",
"mid_data": "11540bc97b97c8d1f381c4f1af2e3688060ce9d437a1308203adc132641c3827",
"algo": "Skein-256-256"
},
{
"output": "42bbdb5ca5a7613d849814e5625231f0965550a30db6486976fbcb0ce8902304",
"prefix_data": "",
"postfix_data": "134b6dae2ca7d24a71e9b907c2a1c671",
"action": "hash",
"label": "snow pow step",
"mid_data": "62f52521c688922c4e6d256181e49c6438e2981acae3514d44c3767b06ccfe29",
"algo": "Skein-256-256"
},
{
"output": "62cd17a79318589d1a8580d2a0eb5d7f1ed91eff1b879f75c47d3482e81b8783",
"prefix_data": "",
"postfix_data": "a3ee7f5aacd86a286ad95d17def4b751",
"action": "hash",
"label": "snow pow step",
"mid_data": "42bbdb5ca5a7613d849814e5625231f0965550a30db6486976fbcb0ce8902304",
"algo": "Skein-256-256"
},
{
"output": "0000000000276312f079297412ecd2168f9b21057dc911758984add713c551b8",
"prefix_data": "",
"postfix_data": "888ab462b300217ca79c19fafffc614d",
"action": "hash",
"label": "snow pow step",
"mid_data": "62cd17a79318589d1a8580d2a0eb5d7f1ed91eff1b879f75c47d3482e81b8783",
"algo": "Skein-256-256"
}
],
"channel_block_hash": "565a051329f8dfd2f8c0787ecf97df682d522026e38bf0b4f718a91c4d114ce8",
"transaction_hash": "d5f022da0cd087b926179af71d5d68d3858926fed74787347b5684b4be97119e",
"snow_transaction": "c3be5a72e6ab2d6fabf3eae673cf4e6491d551946b48a4b2270cf75fc4b4c2bb"
}
Version Plan
- v1 - Basic operation backed by Snowblossom (done as of 2024.03.04)
- v2 - Recursive operation (a timestamp service can use another timestamp service as its backing)
- v3 - Other chains (Bitcoin, Bitcoin Cash, Ethereum)
