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 0x6cd41ccfcd32d82b69dadcacbc0b0c8b2c0f6c91cb2019b74860c2fd8b8c1990. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b2bcb38a-f2ea-4da2-856b-03cfa43bdc60.json and https://artists.proofprofile.net/proofs/artist/b2bcb38a-f2ea-4da2-856b-03cfa43bdc60.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 0x64dadb017a54d310ad141d6bedac612dac4c8d6f1716eb4a650e81d4ab04145b. 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/ESA011206991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e06d12d36b858c801a20a6530f776ab79c90906ac444e4a298e83c0c7aa542. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/ESA011206995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83bbce9d68f2291f07de1696b4ebaf14c4be8484737828ac6b39abcb5d44014. 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/ESA092202959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83f5b750b18cd42921cf6be0a18c96fe2a9ecb66cded0d179e9f401eb1403f8. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/ESA092402041.
Entre el bé i el mal | Les Arts canten Estellés (En Directe)
Propietats de la pena | La Muixeranga | Les Arts canten Estellés (En Directe)
Ací em pariren | Les Arts canten Estellés (En Directe)
Ací em pariren | Les Arts canten Estellés - En Directe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57df0cb9290e44b894fb348312aa7c8322c16ebb2325c55dec1ac4d087d44f6. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/ESA092504849.
Les meues cartes a Olivier (a Didín Puig)
L'escola de Ribera (Ovidi Montllor - 30 anys fent vacances) [Versió]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff5ead419d9a25b133ff942b06870209d702f78b1833021785ec2eef7bc1a55. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/ES90S2201932.
A Dos de Val (Ovidi Montllor Diu Joan Fuster)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa135fa9997daf71a3c82e839439f6fa9d12cd307c03df17dd659e24b27c6aeb. 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/ES5061210109.