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 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 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 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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b905544ece348e2c823e8467050318dd7385372c68dd28a71917e92fde9d28. 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/UKEKS2300004.
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 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/UKEKS2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6233da346fdf5054279275a5885578f908a6cde97a41831a871dfbd05242d39d. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/UKEKS2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0e65850aec11b6eeabae157bf404705aed3d74f22c6670caa2e2b88d5f6823. 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/UKEKS2300007.
Up And About In The Morning / Scattery Island / The Slippery Dip
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c5ac0f4d86f9394f666464d6108a8d8603723d299898e96dfafafd81b8c78b. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/UKEKS2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba79be61d7188fdf4623556c4dcf7ae3074af4b633912ca8e78349d7aed2627e. 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/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.
Saltón De Meres / Pasacáis Del Xarreru (Asturian Tunes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060c533e3e7b241c104000eb69be97832b3d2b540a1d0a3a6177aa58feaa073f. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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 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 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/UKEKS1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf651c800abcf3357da933c04cd53cd6a1059e380197810760f1d4bd0a036a02d. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/UKEKS1600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c329743ffa0f70b90f96ba43fbe5e7a665c64c6d2e01d68fe4514525e9184e7. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/UKEKS1600005.
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.
Paddy Ryan's Dream / The Dunmore Lasses / The Maple Leaf (Reels)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4895604a2582e81bf4111de39ef6c3807f6a98e27dd2b16aa99fae12e7f454. 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/UKEKS1600007.
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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244b686fd89c0b545d7a7952921a4a22328bc69dc5ce5d0ca9406c5d1bb09698. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/UKEKS1600009.
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 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/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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90c6f81d88592bfffc45bd4341c5a80172302268eafa6041edda6af6bea9998. 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/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 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/GBHR31200002.
Patsy Touhey's / the Exile's Jig / the Yellow Stocking (Reel, Slip Jigs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0a36a449e1ab1af26d51a08f7e9257188cf969685af7258a8975ebd0a0f8f1. 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/GBHR31200003.
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.
The Red Haired Hag / Miss Munroe's / Do You Want Anymore? (Jigs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76dcb6d28d622c752748fc29433e516cb61b2ce00229c9b8a25193ef1b1679db. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBHR31200005.
Martin Wynne's No. 3 / the Crosses of Annagh / My Love and I in the Garden (Reels)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3494016e42ccf893a8790d1169d040a717b669e135aca1c1f36b5714a3bfa7. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/GBHR31200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0229d4fbcd215c7ec251509cafa50f5d97116cd83fa7c9ec84ccd0def819571f. 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/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 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/GBHR31200008.
Tuamgraney Castle / the Rathcroghan Reel (March, Reel)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925fb3c282a71bf3e6161e96e9dcf3fc832ab6179801a82b16a16b7a1e31c83d. 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/GBHR31200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3524cbfb0821be68ffce3a26eb726d1fde1af98de705b14b1e5e41d0d6479da5. 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/GBHR31200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1370d24b3e8bc4d9f8a25bc3287befb48a388d2a4b32ad32c56e5194ace92ff6. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/GBHR31200011.
The Galtee / the Black Haired Lass / the Stoney Steps (Reels)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ef635d88f074d4f4b6438cb6ec8e81c970d7c8e596dc7d2739a20e9c78a20e. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/GBHR31200012.
La Volta / Drops of Brandy (Renaissance Dance, Slip Jig)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61117370a3b37b74f999c6bce7f1a2105e4013dd12fad880c6dfb0292563423f. 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/GBHR31200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc20a12de1fd1cd933a5ec7f4536ef6043125cbcf2a74674e7d366f3a84b65c. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/UKEKS2400001.
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.