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 0x96bd5da8056931b347d881b27a377d6e95570c3b101327ce2aebd98e9f311e3c. 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/277bdc68-9ef0-4f97-897e-8b26ea0ca087.json and https://artists.proofprofile.net/proofs/artist/277bdc68-9ef0-4f97-897e-8b26ea0ca087.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 0x6b30e905c68e23fc461bfd64b4d8c5a27984380d4b155e824ad57063ae953b98. 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/FR7GM2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3347240eeab573fc14a2137bb384b895c19bfe322f22cbec17ea6b29459ef0a. 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/FR7GM2100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9482459fb14e28be1eb6421127bd37dafa9542c36e14b9706d08241c5716a22. 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/FR9W11611406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0dabb14722ba16d9915ffb18724e936d39211435bbbb5b41c7a68db661e4eb. 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/FR9W11611409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610bec6882f483af08cfa0a380ce32f606b489d5f8f9bf31d06898f88cc823d5. 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/FR9W11611411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016e4c8e06de08fc8ed54a945030eb887178a9dacc77a1f7340f6b329bb251b0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR9W11611412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635851df5532cb15837ccef4ce5fd594e228cdad7042c6d15f370cf4dff9b15b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR9W11611415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84acca238f0903f9243d30a1f5ef648decfd6891e2a06eda7e9c80216ce31462. 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/FR9W11611416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b08bbb37eaaa74abee637b8903909dce12cdee75f5afe269694a70bb1830028. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR7GM2200050.
Errotic Impulses (feat. Arnaud Rebotini)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c5db1c63fe6359dd2cfe52cc66252e38158060b9a4c8c5cd5372fcb41013a9. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T18:58:48Z), 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/FRONT1300710.