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 0xa8179c5966e5b136cce51c2b87325a4a6b7f66de9fb564dcaf4390ee3452e11b. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d83c3145-c073-4e06-8dea-1aef31e15526.json and https://artists.proofprofile.net/proofs/artist/d83c3145-c073-4e06-8dea-1aef31e15526.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
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 0x9015f0f124ee34f50874f15c23aaddd3f269dc26a6670bf8c06d8cc25757d04e. Chain 2 (Bitcoin): anchored in block 958535 (2026-07-18T09:42:49Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7S2478750 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9015f0f124ee34f50874f15c23aaddd3f269dc26a6670bf8c06d8cc25757d04e. Chain 2 (Bitcoin): anchored in block 959147 (2026-07-22T15:43:44Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7S2478750 — a six-check JSON result.
VIBES Acoustic Sessions #3 | TATAIO (Acoustic Live Session)
VIBES Acoustic Sessions #4 | JAZ (Acoustic Live Session)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8d7140f8ac6c1ff557d36fed4569bae58684a3081ea1fa04adf66cdc0f70d4. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYX2597442 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2092cfb4fae43e11a0504f1c6654af2d2aca375195e874f604bb8ab8ae9e6a64. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFYX2597443 — a six-check JSON result.
VIBES Acoustic Sessions #6 | NAHUEL VILLARREAL (Acoustic Live Session)
VIBES Acoustic Sessions #6 |NAHUEL VILLARREAL (Acoustic Live Session)
VIBES Acoustic Sessions #7 | SANTI OH (Acoustic Live Session)
VIBES Acoustic Sessions #7 |SANTI OH (Acoustic Live Session)
VIBES Acoustic Sessions #8 | ENZO (Acoustic Live Session)
VIBES Acoustic Sessions #9 | CECI (Acoustic Live Session)
VIBES Acoustic Sessions #8 | JUAN PORTELLA (Acoustic Live Session)