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 0x30147ec58fe95139440ece62ea1f9ce56608a555e15b83b64db21ecf2feb60a6. 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/0183fd2a-bf8b-4e80-a632-7b6b1a7c5ec3.json and https://artists.proofprofile.net/proofs/artist/0183fd2a-bf8b-4e80-a632-7b6b1a7c5ec3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
L'Onore e il Rispetto (Piano & Strings Arrangement)
Carpe Diem (The Shape Of Piano To Come Vol. I)
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 0xd592529a0bfc1a116834d00e45f686eb774bdd6da18925df842f3479f9680ac0. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/UK2FD2100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7288343d9c291d3c6467b3ad35b7ad6ea1b1118429e6759ee449da3c7cb87182. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ITK252130039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a5a073f4631c901c748fd95c99b203357dd483cc357b08c571176f18d90df8. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:05:18Z), 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/ITK252230028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671b2bc0449dc3a2e487b24f2ddf2bb246d1946bbf5e71fd197b772b5350df6d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBPS84913754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2da72a7392a255d78887d4cf25921ce6b4bed5c0aca583fb37f286273bb9470. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ITK252430013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575475d51d9d81496a3d8d764f70924d618e063ea5b3a7d32779dd24f2a6bfeb. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/ITK252430033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d906267e4f22f9f4f3ed5bd43e2baf2244f99cd903cb3d94c2fb639eb9db6d8. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/ITK252430073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d66ba7bd712dc45f941d7cd9c17d374161c54224630e7a8a0694c587b723f2. 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/ITK252530055.