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 0x1c97162af24820c3a2795805637f69512c747ac75311d3c0962fe6cf1255d1fe. 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/34754b30-2492-422f-ac68-c5819c1f1438.json and https://artists.proofprofile.net/proofs/artist/34754b30-2492-422f-ac68-c5819c1f1438.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ff59ea9fe32e8ad74bbc475b4938cdf5d63cb0946477e50513c1ee0f03e0d0. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:37:46Z), 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/BX9ZT2200201.
Pot-Pourri: Onda Onda / Explosão / Aninha Na Praia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ab48faa8f79dab9b664bd3283f24ebc52c340fccffc8ec6034091fb92b466e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BC91N2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c237b2c9131a209129d0b03e610c47ac3a8aade243c13444b30bdd3db201726. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BC91N2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc339cb953c18c9ca4cd94ca810071ca04ae8c12fe5fd2fe8a6a1cdd88ec2d0f2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BC91N2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9cc33ecfa947001a0e1cd3ad2be23cdfa15dc3598a98610d47441488176a4cd. 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/BX9ZT2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6960971838402eb95e606b4f1540a5acd83be989a2282690864c1d88d71fd156. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BX9ZT2300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8991f1e3b2eef240aec95a956e740c0f638b87e11d3958045f6173de3340d4d1. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:51:28Z), 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/BX9ZT2300412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0be2fc591a2b24fbdc0eae1ccd9d93bd1eea0bba0a9e6bf3f827d4a7f4f73b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BX9ZT2300279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294ee3eb6c71ead6f938a09f8452ce6c39ad9f99e83c88a608e495fcdb1ba326. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BX9ZT2400245.