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 0x13bcac65571b0329d4a8c34cfe7d8302fe8e257bb0889df857f582bc6d9fb780. Chain 2 (Bitcoin): anchored in block 953754 (2026-06-15T06:45:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aca07fce-dcb1-412c-bca5-32c10da2ff96.json and https://artists.proofprofile.net/proofs/artist/aca07fce-dcb1-412c-bca5-32c10da2ff96.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Saint Patrick's Day Music - Traditional Irish Celtic Harp Music & Folk Melodies from Ireland
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 0x3a1a594b2628eb0a9badd59baf9718ae3698410a906c3d320ffe4fa1bc6a23d1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ITO101628748.
Molly Malone (Cockles & Mussels, Dublin Anthem)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9cf57e56d7ebf35fcc80757abb776ece1530229ea5445f400b1fb3730a8621. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ITO101628749.
Believe Me, If All Those Endearing Young Charms
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79081302dbe94ffb0b668abca2219cf8a60d0aa40dfc0e7094d64fa3cc87ce0c. 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/ITO101628751.
Amhrán na bhFiann (A Soldier's Song, Irish National Anthem)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9d4e7519fef7085e752aa0c9b5baa53e88945236d03f1b738d41bddc61be61. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ITO101628754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3805e08ae2893bce92225a32d7abdfd3218185000f78b3e08037a0978097a4. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/ITO101628756.
Saint Patrick's Day Music - Traditional Irish Celtic Harp Music, Folk Melodies from Ireland
Calmness for Saint Patrick's Day: Traditional Irish Celtic Harp Music, Inner Harmony
Celebrar San Patricio: Música para Celebraciones del Día de Fiesta de San Patricio