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 0xb02c70cfd8b1ea4f8061e580594dc4835fcdaeca03ae418060df090015715e6f. 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/55f9afb7-1b49-44fe-ad78-8d74eed5d86b.json and https://artists.proofprofile.net/proofs/artist/55f9afb7-1b49-44fe-ad78-8d74eed5d86b.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 0x019775d7c43fde598b23a6a320587584065a6ec6e50f6e0acb14161831df574f. 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/ARCUP1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7671168d0d00dd366cf7111c3abedf9bc54ade8c39a10f0555f1fea59559b301. Chain 2 (Bitcoin): anchored in block 957752 (2026-07-12T20:53:32Z), 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/SE5751981942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81e7481ffda2b4f3b92ce1ce2f7bd9fdad5cb2f392d17c2b48725e7b6073bc2. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/ARV5R2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f74cb3e4ef8e916d3981f36e745fe61d681dd4470ec55b5bb8787f2192f2b8. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:10:06Z), 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/ARV5R2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa692511c5c405d406a035d82bc87732f775a31cdeb534203cbfe24d0488c74b2. 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/ARV5R2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12acddbc0d6ecdff26298116ca85c709508acb20acb444cb554e998dac21ac4. 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/ARV5R2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f42d648c860572e10c1221cebd06bd29e5174484acd6f81a5f6dd9efbbab5d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ARV5R2000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd4048c3ec92b85b4ab76d114fd71a09ddd970a4cf5f033313ea0539c8d3d8c. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/ARV5R2000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cde6fc582ce92fcfe89e0b26efabe144d9ac75df4ca8001fc1130dc8f48c285. 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/ARV5R2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0339b50fea5c7e4730439f80b23c93299298d54144cd9fba1d9e6d9b53fc66a5. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/ARV5R2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a848d3b8f87b7926908a687a6c3fb2f91628e62be1f8ed5953375e02e7cc3db. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/ARQ5T2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1962f4c564ce4fe4fbfac67e05846fc24837d3f0ce33c98331120b96baf836. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/ARQ5T2300003.
La Santa Patrona de los Corazones Negros
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26bf3a3ceab5459426f4712379a56b20ce57762d793f509c83710dc8c077c97. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/ARQ5T2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3bff7f700e8075d2fca93c0c33d049cade7403d778a3d73bdd069af37628c8. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/ARQ5T2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96fbdf9d8908d0f67fadc51cf2736e58ff83f33fe22dce352b713e4506415f70. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/ARQ5T2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d58c3603186db7af1df032e7bf45d63c2fa766f7b44dcd0272ff79b12f12ef. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/ARQ5T2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb15f912aa74f839415c1beb73003e7246a43ae7194a71085d768fb8db29814. 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/QZ5FN2535280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1fc0055bb65af008fbefd8460090ffb1fa2fa40ae24cbca8e7d8be6d53db567. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZ5FN2542217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7a3d5d6523252f1a0b709de9a5af9bf9577898f355baed0db6d5ed6dfa16ba. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:52:45Z), 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/QZ5FN2542219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e14ac507050e7c2076acf66bb539b5713a3905ffbe6c6f15fc2db3c881c3b1. 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/US6QR2400117.