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 0x4cedd2d26977322fa3e811c2441cf12d3cc4d34a8316e6562de1aeee67da4538. Chain 2 (Bitcoin): anchored in block 953612 (2026-06-14T08:22:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/153e4207-f4e2-4628-96e4-ade6c5fb0c51.json and https://artists.proofprofile.net/proofs/artist/153e4207-f4e2-4628-96e4-ade6c5fb0c51.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Follow Me Up to Carlow (Transcr. for Vocals and Ensemble)
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 0x6b84b03c3bfd4392c4ab6c775825c9f99c9a19cfe36abbbdeff26d163dd8aa9e. 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/DEN962431403.
Irish Tunes I: Cooley’s – Seán Frank – Fair and Forty
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761c9b01c9a48f62f93f3183f84ae3fdf3fac30d26d24519aa6b207a98c9581a. 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/DEN962431404.
A New Irish Tune in G Major "Lilliburlero", Z. 646 (Transcr. for Ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c55819b01281ceea8e83b3709190b52f6d5bb146769c0e9ee0269bcb0420c8. 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/DEN962431407.
Erindo oder Die unsträfliche Liebe: Gavotte (Transcr. for Ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79109dfebad31b653c6c065a30e97802702efdca2d1389ba9b28a50bc01bd825. 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/DEN962431408.
Erindo oder Die unsträfliche Liebe: Menuet (Transcr. for Ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b17cf90c90a31a53560957cfe48b3361524b852fc86f61b35d4c360d2a2902. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEN962431409.
Erindo oder Die unsträfliche Liebe: Branle de village (Transcr. for Ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c817b7a7e8ba3b9dffaca9a9254a3e21afdcc1355a538ed3c787717f043fbe7. 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/DEN962431410.
Erindo oder Die unsträfliche Liebe: Bourrée I (Transcr. for Ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7e834f9544c8972d964e44cf32e3c1b64e745ac42c140b5f3a41fbe31593c8. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/DEN962431411.
Erindo oder Die unsträfliche Liebe: Aria (Transcr. for Ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037212f5e261e1252420ac07edb3b6e6799ab59a06f43b681086bd16aa4bad6c. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEN962431412.
Erindo oder Die unsträfliche Liebe: Bourrée II (Transcr. for Ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3746451ee7f37cbc72de30f2a78d16be164e7a37ba366fa67a907dfe135cc2f5. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/DEN962431413.
Introduction to Scarlatti's Lessons (Transcr. for Ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82bdbc9e6ded9ced6f764506b8af2d063689742334fe09b9142e399b1f46add. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/DEN962431418.
8 Suites of Lessons / Fifth Sett: Gavotte (Transcr. for Ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f67772e9727bc3ead756589adf1a950ef5f7a9d70d3ddcfae01ef9514f7d6a. 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/DEN962431419.
Auld Bob Morrice (Transcr. for Ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d99895267afea47c40b17ae71fd4d8f1f55e3df99eccecf8c53d0e7a94bf32. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/DEN962431420.
Irish Tunes II: The One-Horned Cow – Patsy Jouhey’s – Killavil Jig
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d41e67363f7b3c8c10cd75a4e13ce5452001de770de4bb1291b9443105aeb3. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEN962431421.
O'Carolan's Concerto (Transcr. for Ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2793fb69eae2dfea08cca8719eeca6367b1041e68a1a35f5e7321379f9063bbe. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/DEN962431422.
The Red-Haired Boy (Transcr. for Ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6a37cca7e852b89fab676b2f52e9a4e0a4f8a7f31d044846cb5897462a4ca7. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/DEN962431424.
The Waterford Waltz (Transcr. for Ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542f40c6081b5d7f54fe98a7cae027bf8b0302fec2555cf8f30b152148e6729e. Chain 2 (Bitcoin): anchored in block 960161 (2026-07-29T22:51:26Z), 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/DEN962431425.
O’Carolan’s Farewell to Music (Transcr. for Vocals and Ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9441447187fb7947a255a697d4d1242287642e9b9dba62c80c58612aa4de2368. 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/DEN962431428.