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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 0x147281c1d91c5021f716163fb612deb9d3bfd59b5d28c31b3655a1958e59c9cc. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e77db6cf-573f-47a6-91b3-168acf7e1396.json and https://artists.proofprofile.net/proofs/artist/e77db6cf-573f-47a6-91b3-168acf7e1396.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 0xd6b99c0af4e8179287f293330fa787d7707ba62a6bd2465073a14309c9130513. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:27:01Z), 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/QZK6L2593343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9adae27c1bcf0448e725c9dc205f7058d73f8fd9c44e2645d07971e09383c4e2. 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/QZK6L2593344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f7765b050453f5b848d14d1924594ff9610b41cf74133f9ed1dcb48400d131. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:26:37Z), 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/QZK6L2593346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43cd084297d38d309835f2b98270785ab4ee9590d44fe44d8c20ac06d5ddfd0. 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/QZK6L2593348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9cb1af09b7a52a575de1049e547c135778e54594092fc227038e7f0f569fba. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZK6L2593349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040796547bacbe70a1db0a9a1484c5b9b5b3f8af0c1eab16ccd6567e4b288384. 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/QZK6L2593350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a02b8032f7f16a2571d4f2e94d101ae9614663d8f44f298941e839d6bd8fa2. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:53:12Z), 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/QZK6L2593352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe951b618f0a4c40b48c040487c20ccb75d1b68baf7536a1c15f9704d855c4862. 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/QZK6L2593353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164de568287eb8ec0e096fc8fa930e95bb8d7e50b997e430e20e66c683d037a1. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZK6L2593354.
La Tête Dans Les Étoiles (Bonus Track 2014)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a8a01e52e810b3283518d0286f3b23902d35af34b47e7b336ba7d92d092714. 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/QZK6L2593356.