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 0x82b4778162f44cdb498f6e7a55986cf71558ccedf837013b9f210646ec489e47. Chain 2 (Bitcoin): anchored in block 953768 (2026-06-15T09:30:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c24b2fd3-7d4c-4dde-b0c5-1c3cc2b31a8f.json and https://artists.proofprofile.net/proofs/artist/c24b2fd3-7d4c-4dde-b0c5-1c3cc2b31a8f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
アルプスの少女ハイジ・フランダースの犬メドレー(おしえて/よあけの道)
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 0x169bb003839c4041104d23fcb91379d8ffed8d17ef49426ed683b2d713ed8c03. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:50:48Z), 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/JPF310600046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2315f34a7fb8fe810bb40e4ad0eb378f5ae6cc5bed2689624c0e42b95bdfd7. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T22:04:53Z), 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/JPF310600131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11c36a71034876b7f9241f5a2f7ee56067c5809da5b0d4af17bd2f9ed6a5e79. 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/JPF311200061.