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 0x7458ec68de3cefddc884ef0483eddd66e9efa2041c913fd222b234293036487d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/49f327c8-6453-4a70-976d-bdf708726f0a.json and https://artists.proofprofile.net/proofs/artist/49f327c8-6453-4a70-976d-bdf708726f0a.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 0x65693d6f63ee47c1b6c0ef2178784b64349176a0f1a62422816aadcca269269d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTV32487186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85028e6a3e56e5d6076c3b3e3081fbac62ce0ab2adfd3c7f60260ed8f27e49c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZWV32410347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e66e2fc2c48bdf94546156b2293edc5cccaebe6b230b6ada3023b9e131279a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZWV32418732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646654c9c13d7fd78a6e0114c55afbf06eca0870e84646149b309a4e6e1eebd7. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/QZWV32483708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2001052297f1d944f880c9f96c5642de8c8530db27f7439abca30da39908e0f1. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ8B2422067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c523f3c26c8b42ac96968a7f2f7ee6c6219c34cc6efde53bc29146fed08242. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZZEB2417540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf50de5848bc82e3e02b23c4e9527ce89079edd10e5630902098afcaafd339bd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBRKQ2510489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea15c7382be8ac0d64fbb920e2f64cde30f3ffaad61ef89c8b8252c10eba932. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:35:35Z), 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/QZTV32586752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac0457701a6ab773afc9dfa5a66ac389889871fd0387b23fc292594b290d00d. 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/QZWDD2534093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c045c3ddf1d86fea3ac97440afca6186fff21a8b64fd803b702edf104b3ecb0. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZWV32541767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac122c1bed550d7bb495181552b52a5b2b0c8e45ccf157708b09b22b70d524e. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QZWV32553998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ed1625493bc1eec39f8d0b748aa991fb9803a78dbc26ca78bed4833da7d5ca. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZWV32593739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97794718992f78a2aa268e2acb118aae3d2eb9336ad5af5683277d967790effa. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZZ8A2582424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24177f0e51d7180a0ffc1174d48a418c29649aaf9c8abf10b58d48df3f3cd96d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZZ8B2490348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b9f32c4633515209e22fe7dab99cdb80558254ba86e1cd8badc8d24348d9d0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZWDE2511180.