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 0x526e5f846cfc1b020e610a14b7a5838509e641230ec3cd915ecf2ad9bb389e34. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/91c8e752-65b8-4672-a19c-a8e017fc9626.json and https://artists.proofprofile.net/proofs/artist/91c8e752-65b8-4672-a19c-a8e017fc9626.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Round the House and Mind the Dresser / Molly Bán / Fred Finn's (Reels)
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 0x53de9ae280e4317d492e78aa3a182eaab63ea0e6c215c077461b5c813c3460fe. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/IEWLH2300001.
The Wandering Minstrel / The Maid on the Green (Double Jigs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4c453c6c3968214158da9404cfcd9bb72a3f10c3574bfc209050a338ad0f23. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/IEWLH2300002.
T'was Many a Wild Night / The Ballyvourney / Sweeney's / Is Trua Gan Peata an Mhaoir Agam (Polkas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35c8fd4cde519f6ea4616daf6e3f4b9ad197caeba6f916b4a793a97a26e054e. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:03:34Z), 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/IEWLH2300003.
Jackie Coleman's / The Four Courts (Reels)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1458c9d76749d8721e1c7149055b4261de1434dd8f5cb04ef503f1655ba936a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/IEWLH2300007.
The Currabeha / The Caucus (Hornpipe / Reel)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3272fe335b3621903b7dbcb90e550639d980be60204c6baf0681e0bbc1cf4dd. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-21T08:31:05Z), 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/IEWLH2300009.
Down the Broom / Matt Peoples' / Come West Along the Road (Reels)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9567a79b2805d4777d12f753d481dc970484e7211cf98f307242029368d6c2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/IEWLH2300012.