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 0x7648bc08f45e07704e9b513b82f04f1b5af78a717e392d8521693be1f47ace1b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e9c0c018-3ed8-4d14-b61e-d270aa7f9c32.json and https://artists.proofprofile.net/proofs/artist/e9c0c018-3ed8-4d14-b61e-d270aa7f9c32.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 0x3df8f28bbbc8986346044fbd077af918153f13fc4b138f701dfb4e9fc90abfa8. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:43:36Z), 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/ARX471200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa88600f69b650675c758c61c9f3b83920e1ddd29c7c177261bdebd713521eec. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/ARX471200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc571208a88bca6fdd62a454575e0136199cf816b41dce31348ea61859210ec. 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/ARX471200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4a9240cc868b84add0aef5957d57ae9ac9478ca528fa231fa7901726c09b91. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ARX471200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10341cb2ed44303fc9fecd55b69faf10e92727c8b54835d689df5629393e0e06. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/ARX471200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3536e6b5d7d8d56c6073b743828ce0b5cc8d64f9c14fe89a965660191c0f98. 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/ARX471200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fca3d1d1b06726cc3fb163b51aafab26b9c47451821d5ed02e8e1a27e382bd0. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ARX471200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b878c8c4fb262e816d71295804157a561a5553edcd3b162a0fe2aab988c6cbb. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/ARX471200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaeef319404726b150b1a4ef505d4ec1232a4d32e7986637d47f41ab2df56cb3. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/ARX471200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc5748fff8a24be677f446892479d3804563bff230e74e81944ee3a950017ab. 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/ARX471200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0f3b902882a4d3297a052e24477f71770d9554a0cf15c0a7c79f6a1989e27a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:01:28Z), 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/ARX471200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e65d4d3b188fd88105b0519bb2c291c7e61d94a3098861c13c53f9ba124b62. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ARX471200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eee1f0750d8ced0bc7033df3744a8e1d502278e16f7ebeea17626a69b30da3c. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:47:52Z), 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/ARX471200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3015b25ca900dd4567016782e8d2b5df24166cadf1209461321304d0749d77c7. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/ARX471200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3c10e2b4d511a6db265e49b30724d1cb13d6755e18350e5b12c50d9014772c. 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/ARX471200026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21121cc2a33b67e37545e8ad83df6f68f714ef413421a9313a77ca42600b6a8. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/ARX471200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e73d25e8bd68ecc6ccbe2253fdf828f6a37452f44b8453bc0e4a3e4d1bba6e2. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/ARX471200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bde6d4db15326acdcd6a84a2179ce77f1ea3457cfe13393990bbc2fd719a5c2. 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/ARX471200031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7687946fdceba6ba612c08b43f890e323920011ccf00a61a86ae128ccd77ea23. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ARX471200032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d0743456b9fafff21e40ceb7029f25ccebf98eea5f86e0fbe34c79ec72c1db. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ARX471200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9dc1ad40e9d6e6736fa716a32359936fd49fc4de769a378553f594d2ed25f1d. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/ARX471200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa289359b50b4f80423e4d51ee9969c1ddf34b8bd0aa7c07f3b9bde96b1b10e. 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/ARX471200036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e79b66b752e67e5e71118b92a2c1052e38f91e5f55fab842bb885bd14837ad. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/ARX471200038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb0046fa41bdd6fe4132061da305ba389f55a57ad7d31c75ca8b7b23a903320. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ARX471200039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1852625339f3de258d686124feae91c8151a82f9d84d12224ded14383f4eef. 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/ARX471200041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2891f7f808035235272560f2636939ac0b142d88f3f209e978433c69c5246c2. 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/ARX471200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5296e5d44ae0829c64ef333dcffe55db24d5448704e6c2a51c6ecf24719e31. 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/ARX471200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d86e0161caeabfd97548775a8999b94488e33e5659a9f36246d4686a82d95e. 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/ARX471200044.