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 0xc9a647a558e10cecae105fd0a963434a90248e9beab385d517a6de19716c4478. 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/ba704fd6-a784-4330-a6a4-78eec26992fb.json and https://artists.proofprofile.net/proofs/artist/ba704fd6-a784-4330-a6a4-78eec26992fb.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 0x60d8bf53975e5da24d8ce591929d6a7602126efd8aef578638b01c5f4cd23674. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/CLGG20300048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd578200f290b96585668fe6ca5ca07fb16c29f33025fa914b8f8c0cd134412b. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/CLGG20300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c623ffd870294bcc9079d402766624a850f7665e4409a7905d64a4dde9d156e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/CLGG20300051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1b6a67b34d240d9630bac84d0d24e416aadfe2e115c61ff124faafaed73e09. 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/CLGG20300052.
Amorosa Como Las Estrellas (Lovely As The Stars)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77bc57d1c7a9868f50b2f690ae67a5dd4a67c0f312b82dcf1c9ed80293fc71a. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/CLGG20300054.
Puente Sobre Aguas Turbulentas (Bridge Over Troubled Water)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40a668956fcb8450bafe63afc3b327719bc66e2405976e1cb67ea575e6e10e3. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/CLGG20300055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416ad059021439b1811ec39f8fa3c43beb80157c430d3401019c1d63885ac39f. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/CLGG20300057.
Llame Para Decirte Que Te Amo (I Just Call To Say I Love You)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1567b886dfcb4d42f6b83fce29917c9ecd8d08f9455e75f35c787f789eb73ba9. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/CLGG20300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b7e5e92246eadab3b5a38283898b99170842a63898c2c5918bd48e28e316a19. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/CLGG20300061.