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 0x1d0e3990c49a6c71d3aa13656bb7e5f65f1fe6996da5f499d9bff3fe69eafb2f. Chain 2 (Bitcoin): anchored in block 953678 (2026-06-14T19:23:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/62c0758c-5148-48cf-aa79-3ab0889d0999.json and https://artists.proofprofile.net/proofs/artist/62c0758c-5148-48cf-aa79-3ab0889d0999.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 0x1b9f99e94d3480bb06ee572f7acf800cf1b1ebfe731761561170f7cb8dc5e732. 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/JPB602192708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f6cc3211ec0e49457990dc99c92cee31ef1911c3d4c83de4e9dd313321c2ba. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPB602192709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef0760999d4f9ae6bd2e84d15d2390036dfb5ade9a41eaee510858275630de1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPB602051585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f109368c5285905fbffcc4abfe0de67a4f8ffe0deaeccdcf9f974ead0edf32. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPB602051586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241695b3d1be1fb0b69201645d6a4b5058a99bd234d629740aac43995fa21c9b. 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/JPB602051587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a043871580a4a7aad222e203027089c66b61ca2f61c27d947c366cf3bd3f534. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPB602153919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0db79fba993785d7587370c626c8422898609175034f0f5da53612d9fcaaca7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPB602051588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc726cb05354fc2c09493aefe0b863c31fd2fc3821b1f204a938ebd84beca80. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPB601893115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488d2d37eea5b91449bfc7a1493c698a5cb7ba4de3217147bb61efb1e5d60180. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPB601893118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f99bdd495954b201681b1838ca17fb51e5fcee6a0f2c74147583ad87cc8ba2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPB601893119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb758a3cfbcfd84d0dd1a80430d0a32142a385b47707d0ae0d680467f28c84bd5. 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/JP92N2410850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143ce396864cb8d870abf2b54e29a4bb32a807979531cbdb7bd353a574d98ef6. 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/JP92N2346374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3b074c1ba42b74125258470a3df42ae240d429b4a66ee3c33f59ccdfc238a1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JP92N2346375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944a8192d7a20b5e35e5a8f57d475f695382d5aa9036bc8a338d8b6e6cb2fbe7. 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/JP92N2346376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24da94afd4d4c30689825dd6a53d270ba7a9f7c6bb713ef668dbb6aac7440e2. 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/JPB602067572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef0760999d4f9ae6bd2e84d15d2390036dfb5ade9a41eaee510858275630de1. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPB602051585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241695b3d1be1fb0b69201645d6a4b5058a99bd234d629740aac43995fa21c9b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPB602051587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0db79fba993785d7587370c626c8422898609175034f0f5da53612d9fcaaca7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPB602051588.