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 0x6aed4fc09e1558b01f76060685ca85557dd304245dbed585e0edd6588e159c02. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8ea7ebfe-6441-45e4-8727-42e51c57cbcc.json and https://artists.proofprofile.net/proofs/artist/8ea7ebfe-6441-45e4-8727-42e51c57cbcc.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 0x6cab1600bdc8e1deee82735e5bf2532bc0b929ab8b78461cde0f3bff5d272305. 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/UKEKS2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa300a0b508cc0a0f9a24614e52706af6bfb73fd92c5260acae5b6bba1b3c690d. 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/QZMEP2369512.
Johnny D’s / The Connaught Heifers / The Jolly Tinker / The Mill House
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a8a47e5bc9ef8e3b3744cbe544c65b429ae1d5dbdab1c9c4d17c31bd095ebd. 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/UKEKS2300003.
The Kittycat Slip Jigs: Fluffy’s Frolics / Frosty’s Frolics
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe582b3fb919ff16e80484af36533fcf10eab8e414feab86ce95eb3993d28538b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/UKEKS2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba79be61d7188fdf4623556c4dcf7ae3074af4b633912ca8e78349d7aed2627e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UKEKS2300009.
Ormond Sound / Jackson’s / Lucy Campbell’s
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9385a9f17ec6f742bfd85a39096ecac3aced8b3f0198e37198d9a2fb2a0646f5. 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/UKEKS2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0e65850aec11b6eeabae157bf404705aed3d74f22c6670caa2e2b88d5f6823. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:19:56Z), 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/UKEKS2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1c2dccfaab6c7553d0d20e50e73839305dfc5073cc7836cc0f52f24f3ca661. 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/UKEKS1600002.
The Star Above the Garter / Eibhlín Ní Riordáin's (Slides)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429edbe51edf66066c7957e90048b1069aa016872eeb9631748a2286da889539. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UKEKS1600003.
The Rakes of Clonmel - The Glenshane Pass / O'leary's Motorbike (Jigs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89700c5e564f45e1aba5d86bf9fbf1ca6ba32eedacdcc882b144c83e568d9cbf. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/UKEKS1600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48e3d516806a9850c498aac164e6a3b4b5b0e0e56cea96cc420c716ecb37856. 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/UKEKS1600008.
Bó Mhín Na Toitean / Hanley's Reel / The Sailor's Bonnet (March - Reels)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aeb411d7c265f877e28deeae9130c27c13c36b3272925239ad4efc54528b1e8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UKEKS1600010.
Bill Malley's / John McKenna's (Barn Dance - Reel)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2beccefdf0bdacf4854291b8759d426770f6e6b6746b7ff611f0e9a5dd1f135e. 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/UKEKS1600011.
Saltón De Meres / Pasacáis Del Xarreru (Asturian Tunes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060c533e3e7b241c104000eb69be97832b3d2b540a1d0a3a6177aa58feaa073f. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:57:05Z), 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/UKEKS1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90c6f81d88592bfffc45bd4341c5a80172302268eafa6041edda6af6bea9998. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBHR31200001.
Girl of the House / Tom Busby's / the Bashful Maid / the Flitch of Bacon (Jigs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471cab85deea4129a472623208791c2f98699365a0ec7accec7bc8d18d050efd. 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/GBHR31200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832723d71672b4388fa1f2a695d0138d6fbd55ad2be879120b96fc28898d86af. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBHR31200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0229d4fbcd215c7ec251509cafa50f5d97116cd83fa7c9ec84ccd0def819571f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBHR31200007.
Jimmy's Return / John Brennan's / Trip to Cullenstown (Reels)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8954363f7f9b1b798e40b1e2089559f1277e6066ca020d8c607255d1009598. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBHR31200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3524cbfb0821be68ffce3a26eb726d1fde1af98de705b14b1e5e41d0d6479da5. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBHR31200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cab1600bdc8e1deee82735e5bf2532bc0b929ab8b78461cde0f3bff5d272305. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/UKEKS2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa300a0b508cc0a0f9a24614e52706af6bfb73fd92c5260acae5b6bba1b3c690d. 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/QZMEP2369512.