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 0x869e237e6065c2da116d997e04e1c64463dac9816e6189a89a2b907ebb77692b. Chain 2 (Bitcoin): anchored in block 953694 (2026-06-14T21:38:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6f684fac-ab89-45b2-bc7d-b5d4e5398e6b.json and https://artists.proofprofile.net/proofs/artist/6f684fac-ab89-45b2-bc7d-b5d4e5398e6b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Renaissance Music - Dowland, J. / Playford, J. / Praetorius, M. / Webster, M. (Fortune My Foe - Music of Shakespeare's Time) (Les Witches)
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 0x6669770770cb514086e252c56ca2ed502fb684d8bd9d7ba613bd0b4b6afca8b2. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USKC60713817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71caeeed8943833991aad4d8e8365bcda697abaaea06eb4c0d8449d34a156689. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USKC60713818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8b425ee73e911a39cae249bbef3abe7666027117bccff20cd302d244df71b8. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USKC60713819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234417b76c2838999c384836fead77a966b7315dbe424861486f3a098f2954e8. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USKC60713820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df009e24fdc5136a938d3ce12a741503ba93a37937509818850be04a796bc01. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USKC60713821.
The English Dance Master, Part I: Kemps Jegg (Roland)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5441f115bca3038d2763ae0995e184eafd3b006d688e4f51f797acf033dff8. 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/USKC60713822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb56b740e5dc5c628e7d305c72d19e26c00d0708865001933e7caf35b78eb22. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USKC60713823.
2 Masque Dances: No. 1. Cuperaree or Grayes inn
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc329cc878286fca62fa83db01418e07656814b84784843da5fde766cd88565ea. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USKC60713825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55b035e73608a2b45f92408e753a07d9f93fb45d96f7512ba5812dbba8ea76b. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USKC60713826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6300936dfd5c56b8c29e9a31f3d5f574596f9e1e6220c035c52ec3a58816c69. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/USKC60713827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2851b3f0bed7b6b66632ccf359fb5bd97ad314e0e881cafae1f4cd024e373b0. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USKC60713828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aca32c5526326f63195be6bf925f5799acc415b03d639d777688861ef420f15. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USKC60713829.
Der Satyrn Tanz (Dance of the Satyrs): Dance of the Satyrs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597b66067e34bfd8ddcdd14e4a424fa74429911edf5378c84452e80fee868f6e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USKC60713830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedca0b19de811d4410254faba7a9c900d43389a7757c4eb5b9a60c37c28739c3. 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/USKC60713831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b771f04385d1a9ff78cfcbf0db8d45d4805a5a0ce6816eca1a75f69c4087e8. 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/USKC60713832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5999919adbfeb3dabee1a820e41aa9d520503e9eaaeaa2a61cba0cce65e750a5. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USKC60713833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db42ecbfdf52c19b45294168c8cd0c4d81adc5d551a82d81b656e11b5fd3a38. 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/USKC60713834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03c5fe39cad39ab7146ad6b5c2015a3c62ccda685bfeb0bde9e4cd4d80e5762. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/USKC60713838.
The standing Masque - Ballette Gravesand
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73fc4811f6d98ad9f91b29bd22ea29778b16945827c69c456f159d375061c04e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USKC60713839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9057259048eb3f711eb04f698210335ec01c456d0312e4e57fca602391ce43f7. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USKC60713840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec219b13c071ffa669247e8d8373aad05b803ff0899d2dc5ca00eb0b2ede2a69. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USKC60713841.
Everybody's Tune: Music from the British Isles & Flanders, 17th Century
Bara Faustus' Dreame: Ayres, Ballads and Broken Consorts c. 1600 (Alpha Collection)
Bara Faustus' Dreame: Mr Francis Tregian His Choice
Konge af Danmark: Musical Europe at the Court of Christian IV (Alpha Collection)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816d062a2c4739f554520ee73ab013a16b5aeae4eccd138e2f50cc5c0d289533. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR50X0816301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc16460520f06d457eef051b9400fb74c8d06884b4f834d67cf297733093237. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/FR50X0816303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc762bfa926d4e526e93340a5fc5d30d79e88f70eb55a8cddd84f453d3e910944. 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/FR50X0816305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b56e2b9ea310d40839854ef2271f4527f670436fc762f7f7d4ae7b68f44d9db. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/FR50X0816307.
Konge af Danmark: l'Europe musicale à la cour de Christian IV
Kohlhaas (Original Motion Picture Soundtrack)
Lord Gallaway's Delight: An Excellent Collection of Dances & Gaelic Laments
Konge af Danmark: l'Europe musicale a la cour de Christian IV