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 0x6af1868400dc89000f1705938e04cbce7ca6fe4692cfb93e2fd53a9ad5b5aace. 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/519919a0-1c17-4379-bde1-aa74abf472a7.json and https://artists.proofprofile.net/proofs/artist/519919a0-1c17-4379-bde1-aa74abf472a7.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 0x0379bf1130b7b9c8ed8aa72142191d6b9868c3369214a709df19432772381287. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ATBK71200913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb826cc70080e7005ecf59ba17b6e43b0c8306da28b3d2b78ead90e535720f197. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/ATBK71200914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7527e4db9f2e2fed23da822d7dd7f4680aaa8dade47f430738535f96086363db. 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/ATBK71200915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb16219730811cb7268fe86d1356e975d098abc69aaee0be2b0eb84ab922a43e. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:32:59Z), 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/ATBK71200916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a5174a64fad453c901299e223b95410e5ae337519e6009394cc5ace5d0d6cb. 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/ATBK71200917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617e361222edb7aef1f638677c2fcfab771bbad067b4db88ea04194a78739193. 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/ATBK71200918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879ca923b5685a3486c0f3e48e73400e735bda4c026916766f505d863f5d4c8e. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/ATBK71200919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf197c81954f73c78be23f4424b3348c7d27a27b531634f5b0c393757ea8a6274. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/ATBK71200920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705f51ad5bfe028d29eb7ef40b6ffbea264115f5ead1cdc72098c33717abf363. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/ATBK71203258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39da62d44b277f5ae78f44f35d5be19c12bb8e2fe2c0709a7aa2fdd46e8b81e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ATBK71203259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5ae933a2f426134aa5c483e9148a3f862c7c95186fc9f7afba9a6c8c7524e1. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ATBK71203260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63218ce0e3a831265e08a8b0642c6d823dc633e89e76729a7f26bba2f247c852. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/ATBK71203266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08793e5433fcb3d1def44e4b08d87092f8bd2fccf28c61b1c22a4264bd6374fa. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T07:55:57Z), 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/ATBK71203267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e64b03ff84d572e376264b3453e8ae4a1bb5298120eab6d4951c82387ab770. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ATBK71203769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8ff52526e207022c7d07823b442f9b7543e7e41e7520569bcd520ef25c4618. 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/ATBK71203770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f34b8492180c9c67efb88ffe2b4bcbe84a29d24e07310fc0bb181e7640f968e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:02:20Z), 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/ATBK71203771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c39ea143da0db1bd35391720c3b0800342e380ba717f1a658dc4053bd22ec1. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/ATBK71203772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f8631a0199f9f9b3647532b04d00b634d48a9459244185fd3c460adeb6fc4d. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/ATBK71203773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e10b622132abeab76a4f25e03719f5c36b53089d5e46a6f0e7230d253efdfd1. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:01:13Z), 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/ATBK71203774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac3afa1442a742de34d0cbc61694509dbe957a8a324987780cf016a3d4d4ff6. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/ATBK71203775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeedb15ad6aad93264471a0689d40e096cad4870a41bcc1b1d267052006f676a9. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/ATBK71203776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de2e3b836330aa73c8c6701e110116c359cfd760ac494be7f800a9b5e7e6775. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:07:26Z), 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/ATBK71203777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21d39cf1461b4152c9d805ab0044d91e59f516d3da7c972febaf7eba5428626. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T14:02:07Z), 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/ATBK71204721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4629ba3ea95171a47c8011a6dc0c12b10e343c5a29f8129e47114fcc3f7aeea6. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/ATBK71204722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c493f194e1b5542e980c626a7f63a985b44f478732914d0e264707ba4383d6. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ATBK71204725.