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 0xe02e0acc0f9f759d0422bf29e64fe661bbe88d5654545a106b7c3bf74e594836. Chain 2 (Bitcoin): anchored in block 953691 (2026-06-14T20:39:17Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6ab5c1a0-5b08-4196-8a7c-2555208567b4.json and https://artists.proofprofile.net/proofs/artist/6ab5c1a0-5b08-4196-8a7c-2555208567b4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Angeles Cantando Estan (feat. Ingrid Rosario)
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 0xe6e5b9bf9e55dcf733e54458b4e9756b4b1a25bb94229e96f976dba76c48cbc1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAEE1927251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7270954af2a92d91d48e4b1455f09b61df4e9632c9b669f871ad7ccb480e40. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:30:48Z), 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/US4WJ2019257.
Hermoso Nombre/What a Beautiful Name(Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404f5631034f8ce65aacbd1a46cb79d7f9cb72ab56991d867d6703cb4e7516ca. 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/QZW9K2272287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55eafce281b41c5e1706e21e2e27872d21df07e55aca43bb72f2a4fb99b2a007. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZNJV2314002.
Christmas Medley: Venid Fieles Todos / Carol Of The Bells (Cover)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b52de5ad94a07f650b2c5106541beb074dd1ff95175236349d9cc6254de24e. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:25:11Z), 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/QZNJY2589352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25064eeb713c6729d8e8f124232c8ef20c649b17af4db8f69e39b49ec803a21. 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/QZES82256694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25064eeb713c6729d8e8f124232c8ef20c649b17af4db8f69e39b49ec803a21. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZES82256694.