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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a99b9d9e6a7de72ce9bb99e133af670c3ba6375f68b293ee58d083bc9760e2. 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/af80d497-2309-416c-8171-03a3d8ba600f.json and https://artists.proofprofile.net/proofs/artist/af80d497-2309-416c-8171-03a3d8ba600f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cockneys vs Zombies (Original Motion Picture Soundtrack)
Tomorrow (Original Motion Picture Soundtrack)
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa018ef0a9dcbba81b6a74ec5ed5932ec91190ecb7316fa918c61e1b77ab06cf9. 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/GBFFM1624253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1811897c1449a1e783b36472a27a5e0a19bb4cef1f7cc1353041b0322f38ecd6. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/GBFFM1624451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad86d9faf8e674c3868de79458c359d882fc7ddf6e64fe2334e65ba0c556970. 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/GBFFM2259074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3543c4759ac4979c559ab23b8a7637b45c5bc3ddb9dc07776d48221c1d947e7d. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/GBFFM1487480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138333bff51769c7febfb431a5179dd13da4a1352443dbc9c18a206f04d9ab37. 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/GBFFM1743276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d6fb911ad617322a0466529cb42777ed29c2581cb75f7c6c2b1925fcb6925a. 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/GBAAA0000615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26cf324e5ff38d98217e52868eb24893e4ecac4431a46cd0bfb3915f5eb58ce7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBAAA0000613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12475b3b6562b96774ebd269682c68c9125ea8190fce7ef11d318db350b1417c. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GBAAA0000610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351167bab400604fe40363295e85b82e45e5964a01521a2803f1a327a3bb2fa1. 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/GBAAA0000617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2050f78130b96cc205db70b876835d67c8b4e4eb74b71922b1defba641836cd0. 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/GBAAA0000618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09586a696955f81f28858f78fada9cf0e07d71b7a1e23e6894fdbdf52477349. 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/GBAAA0000612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37dcc251bb4bce801c0983566ec2f5ffbbdecfcd442a15f78ce4006b6a7e118a. 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/GBAAA0000614.
Miserere: Songs of Mercy and Redemption: 5. Lavabis me
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6031f97fda4ecdd0fb901ab0c5271a155eb40849e233f97dd974c5119189e5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBUM71902942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85472f587f75d06286219fd10c2bb2bebd59fc19d0c0077a33e216fdec9c3798. 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/GBAAA0000620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26cf324e5ff38d98217e52868eb24893e4ecac4431a46cd0bfb3915f5eb58ce7. 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/GBAAA0000613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0580c5b73e1f887c1e51c5d34f98cc6faa53fde1d2080bc3f3849d12b76f290. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/GBAAA0000623.
Miserere: Songs of Mercy and Redemption: 6. Hymnus: When I survey the wondrous cross
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8e12262df79357ee8be539a5ed76c9f5e864369cc4eb3a5ad5cfe29037438c. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/GBUM71902937.
Miserere: Songs of Mercy and Redemption: 12. Rahma
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc6df943d716b3058f4caa62c666f66bfa7980715c879bc6842170bd49bfc8b. 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/GBUM71902935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba917a1a4742fa3ad440eebf77d5943b3494fcee9065e8e74594478c1f707e5d. 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/DEN961630301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43308927d9904541e90aefd4540ba9e9104ee1e7026d2f59b1628d605e0d8d0. 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/DEN961630303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddfe47ae1b9770880bb01c9508070fa7c3f4621d80f78bfefbdb25bc414a4093. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEN961630304.