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 0x6b735ea84eb604f9e9e9bbde17bf2f1ef826a373723a647e32abbf81849444db. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3ea97871-7a8e-4c4a-ac5a-37d30e11d708.json and https://artists.proofprofile.net/proofs/artist/3ea97871-7a8e-4c4a-ac5a-37d30e11d708.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Five Reflective Piano Miniatures, No. 2: Waiting for You
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 0xd83cb21d68929accde1c4f3c1aa83fa812e28ec25ac315083038232e9e3c523a. Chain 2 (Bitcoin): anchored in block 958677 (2026-07-19T05:47:23Z), 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/USL4Q2399589.
Songs From The Musicals of Andrew Lloyd-Webber (Lullaby Versions)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b393b978be974786566dcc81a67052ab1f925aeb7133f40621410c3d3bf0055. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USANG2433964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798c0eeb093748a744c7a7361925a27c8d8346191918c8bbb97a6a24e16728a4. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:38:53Z), 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/USANG2442319.
The Dreamy Moon (Original Lullabies For Children)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f31bdca37f01d7cee7f28a254fb2fa6832fb1bee469c77645f66103ccd7f025. Chain 2 (Bitcoin): anchored in block 957810 (2026-07-13T05:55:46Z), 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/US3DF2487791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8959a01879542fa76e1b006381489fd5e9f2c9b6ef837421d3e94fe4f2b0b8bc. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/US3DF2487792.
Marion's Theme (from Raiders Of The Lost Ark)(Lullaby)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e807a40318e7a07bd0103db6ec30df79f1f11f5774bfe086b4a693c0bce39dd. 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/US3DF2507328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25717c294359e4e9b7da6df9dbaf17719231407164178a01aaa5e24fa4480a19. 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/US3DF2507329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8bcf4ea2385ad0bc997a41f055732ff196592a75c2eede6ea1a8d0b3495fab. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USANG2534369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c8ae33020bb83e66ba2346eb441b13ca63cba335d69ab0ff9ad174f455047e. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:40:49Z), 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/USANG2534372.