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 0x91f7457449ff7dd134a7e9a2de8a470d9e74f425e91f89b006fcb05eb088c510. Chain 2 (Bitcoin): anchored in block 954555 (2026-06-20T12:10:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aea978ba-d964-48dd-a56d-deaa252c8030.json and https://artists.proofprofile.net/proofs/artist/aea978ba-d964-48dd-a56d-deaa252c8030.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 0xb220375666817ed4769623017af49b562c64feee431c8a193010699639d22e2c. 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/USCGH1522561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04250a0bbbecc8465cdd8b99bbb51f01da921ba30b9a97b4d6e1cb17d1032df1. 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/USCGH1522562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cfc9c4fb4e2a7b5878e76231ea993594e1879aef6fb69ce27b423cfc3f6d024. 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/USCGH1522563.
Wandering Minstrel Set (feat. John Carty)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef56e2e489b32953d496e0d86e021c310c6a1d619580c01d4f405ac323fcb15a. 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/USCGH1522564.
Humours of Tullycryan / Murphy's Hornpipe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2621bd1c4d9410830ef8010fd6637270845a5423f08b13799704cacbc3bfa47d. 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/USCGH1522566.
The Godfather / John Brennan's (feat. John Carty & Frankie Gavin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf98cdcf87a8f160d141a8511448fdfaddb4aa1ba694be460804dc3f384fd894. 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/USCGH1522569.
Paddy from Portlaw / Whistler At the Wake
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8ad3bb1f7d90ce2aa26b1432b58570e7e1a1b31509878c8827239ff6560555. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/USCGH1522557.
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 0x42416654b28d694744b1b55e5bb88176d5a9234173f65cb7891a1d3cb39f79a1. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USCGH1522558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e5b3e4bedece4c8934b767133e07716fb238b7f6f2a4290ad9bb68359e3966. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/USCGH1522559.
Tom Steele's / Come West Along the Road (feat. Frankie Gavin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b614eaf3dd49e5b11c77844e649ba5788dbb97a4fbb8c3f5e14056ed9463f74. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/USCGH1522560.
Seamus Tansey's / The Kilfenora (feat. Frankie Gavin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa718bd7a58a8d316b7280def6e1fec27286913f6a027a528400efdadf0bb36a6. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/USCGH1522565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb8a07367a2e79f0a57145a6afddf18c4451e433aa8694275370e38059f0cfb. 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/USCGH1522567.
Hughie's Buttermilk Mary / The Bush On the Hill
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dedbea9cd46edb53cde8e637c59d2a767e966de0e76e05cc5f4d6eb6cb6de7d. 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/USCGH1522568.