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 0xacfa4b5d67184f9807fa796bcdc9263c691eac31ceb7120999f7bda1b1321e56. 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/428fd280-5d1d-4b3c-94a0-56006091d9e7.json and https://artists.proofprofile.net/proofs/artist/428fd280-5d1d-4b3c-94a0-56006091d9e7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Valeria (Canción de la Serie Original de Netflix)
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 0x7a1996436c4ab7a589fc8f0c310e908d300b2ad58cf031b4a514dc8656f110b8. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/ES09S2000131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa495dc426bb08713e6490ed307c6c8022f74fb3641fb07c9140c79fd806af897. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ES09S2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb132fca40a90c8a0b20cfb1286385b296d4c3a03c1d67cdd3fd0ecd2b5714f. 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/ES09S2100263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa841a8404f1e6db6f3ca57c641fb3999d7b7add4231c05492abc075bf942990. 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/ES09S2100433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769d08755b4f3d92d845fdc0e0c79749aaa5fe7118e41e6a5431f7e4d19f200d. 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/ES09S2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8448fdc863702e3ff26e2b018da973866290c24e95ee48158635be51b3d21c. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/ES09S2200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2416b5ad8fa9fd19dd6701ef46480faa54fa620ef8e21ba0cf206d770421673e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/ES09S2200067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d70aae232e7d10ba5431a016d6d7ba8ba881e4a8e66b19cdffff6da927fe7d2. 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/QMDA72238473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5b91104b8cab26dc40a03adc1ff0cb7ddeea05cd4190391b055ee3408964e6. 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/QM4TW2325874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765c6402eac56d8a4c12b206375228f9d04df7a98b90853f72072215bfc77ead. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QMFME2369649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4506178550164eec22800d852c0e5654f10ed4c57680cdf4d96a8596fd214e03. 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/QM4TX2379401.