1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef4aa2307e613776d73493002ea66edda2c60a06b6f82bd59a3ddae3272c99e. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/01ced39a-5a98-4690-a580-745913078f36.json and https://artists.proofprofile.net/proofs/artist/01ced39a-5a98-4690-a580-745913078f36.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0389f3ec4db99661997e3bb8be97665db79477886c4820cc487f03af91044a94. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5078700038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8ed32a5679b0cf92010fb9ac93976af75c953ca68127ffbf329219de1b83ba. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5078700050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c673b65d66745cbe78c27a253c61890f3e0e4dbe5d9aebbf44ed39d6b5ae45. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5078700052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399abcdadf204c365447806ca33ee2f323f12552f2ae421d2978b6f5aad0f4f2. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5078700053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6400dde5a04e69deb0e945676f0d4be5b702d186ad6d991a761ba9bc940ee2. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5078700056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d5c96a4048557436620b688c93f6bb9ec3946269e128bf2fcc266add5eb459. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5078700057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e570b89c4ff303086cffab5f7cd3c6e8a90df0efb985da5d73677b18b839e43. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5078700058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b1d9f96d6133d192251db5f1b45ca0bce1f0f35377f0a5ef566ca7f32f2671e. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5079200362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346670d64b03fd23f73da44723f3e8a0c3cc03abe600e354872264b374fbf596. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:45:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5079100144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd8d7cfef369ceae1c6a1456e10fc37c1f1c87e30d24fb8dead545b570b702f. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5079300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7569a0db07459aeac70e716d72964f5a863c137ed9a1e1fd3f5d3a7517b385fd. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5078700039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa35e42daa04d4165ef58f5a5203919be17e7aa1c6ed00d560303bcc8849a196. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5078700048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb02f072ceca1427df1caae1672237f301fa9486d91b3831a861e705273ffbc1. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5078700055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63ab5f4437f54a6a8d1079f2cde443ea33b8e7d9a1d5a2556d4e810baf64be4. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:54:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5079200356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff95afb8fa153bd9d2a8b5fa1dc81a1c83b814e347927fb5a0bc395d1e1838e. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5070500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d2cddf4ac267c754d0d326bd7b45f531441bd828a30cbb8767823228048584. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5079200360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f7edaaf2d8825ad35b3bcba7d972c4bf023f8e04cb02aa645cd02220df25ed. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T22:08:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5079000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf295c4291bffe4f5b61e8c49addcd2db86040f8387a6fbd41e065665db5f1101. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5079000031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc930cbb3bf56b12840173d2174986e78ad428fdd24a74d8e5fcf8a76c5e1b8. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5079100148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346670d64b03fd23f73da44723f3e8a0c3cc03abe600e354872264b374fbf596. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5079100144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8f39885e31a1e9b17ee9ba41640e2ecf416ea291009aebdb332c102c665dcf. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5079200413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd66113f75553b92cf8be861d1dc66324b6fdf6dbba40b2d240e35d1792a07ec. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5079200414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cbc42da0885db0efd02203ca835b57d8665f0d07ec44a968caf945e88c86de9. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5079300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd8d7cfef369ceae1c6a1456e10fc37c1f1c87e30d24fb8dead545b570b702f. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5079300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb35206d68a13015dcfa7071aa270d4bc69edbc1add9f27e808734b445519604. Chain 2 (Bitcoin): anchored in block 957961 (2026-07-14T05:58:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5631300359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511a011e64d8ddd953e915994befbfee665f0d208b75ec6ee0bfec21ce6e2e47. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:09:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5631300362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7594c6be5599e764d6d0c0bebb105fe90c6f0bdf8f2ece480024e5b5f282ea. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZN882149628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a8e8532c426a4646774aa41790dac5c10f8db5de9adaf47e26a947f2768a05. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES6102329001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa35e42daa04d4165ef58f5a5203919be17e7aa1c6ed00d560303bcc8849a196. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5078700048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6480ac7dc74cb37eed20098a59a625426e4067419d538e50e4c7713e7a4e7f72. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5079300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b2e5260d1a877a030ad923cc40221a3e830b58d733d2b2ae0ac7fa2f16b0e93. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5078700040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c0205d49157ca460f95cfa2b5e16ecaa493db61e4b4bd362f68cba76902769. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5079300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec6d4ea782f27a7c279eeb4e4be33f14b2ea3dc9670ae46fbd7ff9c76f0c711. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5151300888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ffb45246d766c086036ce13ffa4594a5da29767e04cd9a0a04a1cf45dabd32. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USV291492889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb02f072ceca1427df1caae1672237f301fa9486d91b3831a861e705273ffbc1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5078700055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42945294b56158b5cd81730609219b53504ee9cc4e5569049dd8ce8b11d9dc4a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USV291445750.