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 0x41fb9cc40a225b8dab29d71b8dede44ad460d7067516792ce472f98be3580d38. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f44206dd-e2ed-4910-a6ba-7843954ed5f9.json and https://artists.proofprofile.net/proofs/artist/f44206dd-e2ed-4910-a6ba-7843954ed5f9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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Essas Horas da Noite Fica de Quatro e Vem Fazendo a Pose
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 0x16905ad28b2afba832769e3883d2fbdaac341ab7d69342b96734ef898fe6c172. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T17:06:35Z), 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/QZW9M2414543.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26394bc1aa6d7a789f6887fb73ddb13d7978367a70cc1b6960aa0501c432c28e. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T04:12:00Z), 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/QZMZ92500232.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6dbee34b794559a00a1d1fb2d3c503a8471cb5dbf6210d5ad5ef340393b5ef. 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/ESA112577033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561679381019663d48f48626e7e446a21031e5ffbdb8f360ade5a1ae0b044385. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZNJZ2578837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae02669f084b2abb19e5d3b4c1ceae2bb095a1d613bbfb48183f4a5cc1476565. 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/ESA112580077.
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