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 0xace748f7e10a95a9adecb21f6cf6614d2474a2033e8e5cc8a255b3386017f10c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3f59582b-0099-42b9-9059-38c3797abdb1.json and https://artists.proofprofile.net/proofs/artist/3f59582b-0099-42b9-9059-38c3797abdb1.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 0x2846229e0101f44dc3b0bfce53f321327f68cc9bad51b99c2b9a70ea074490e4. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/AEA0D2123822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6fc182334bc6ca058d5d1c2e1c04d49df64f162cb0b873c82011aa255dfa012. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/AEA0D2123824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6abf0538622fb2361a2891d59e6f10cb5377de48e24b947c7e54dd4b7745549f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZHZ32063441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b825e383f07bb100c412c15a87bd7a7f0b8309ce0e01d766d9862174a64a62c. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:53:19Z), 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/QZHZ32063442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19520a6df00104fffbd181de13773611e2bd1a62fe6b81a16da25833fd2d410. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QZHZ32063443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa429cb995c579fe2996ca6d3ce30a56ef83cb61ad7d6c9b388ec9eb366968ae8. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZHZ32063444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f41113ec07a0b55de80fa40292741115a8d2464a67dea6cd43204a36da843b. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZHZ32063445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730b7f38d19c0d7002aa7c97a40fcd6d285bd83d326e5027d93ef7ef0336c3f0. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/RUA1D2231516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e1da897a2bb0e74f38b82cef98fdbb04a56419fba5573bcba317a0d7e2f171. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/RUA1D2231519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05e69ad02e870ab5e8464e80895c9dc921e4b8179075598120b9d005a06522a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/RUA1D2231521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccbc0aee6b7c75558e24ea9345c8579513df28600770fb1cdc2b02bf23b31d1f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/RUA1D2231522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8b5324a7c865bf406780beedfc2d419c60fba6ded8855931d70c00d54b2fe6. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/AEA2L2218888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50373cbf7392974eca29260ce6f5a068c08dd701364081950755763a983db6c3. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/AEA2L2218894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b62c6a30e1f81c8c483dd7ea9b7bc3b70be8070eebdaf37a3aae8f610d3b6a. 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/DGA0P2311387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa38ab3877361f6190cb61f67042aaeb7a2b111baf7c443a0c8647f7616a581a. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/DGA0P2311389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72968ffce372d6a6863bbb80dff1085ebe7185602b69b6a6d3e1068e6db7563. 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/DGA0P2311393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fbd80dc14c22d3cda2b7daf73a46f2638b96a99ae47258edd18ad4dc55cb4c4. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:37:23Z), 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/DGA0P2311394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ea342b7af714a3d4a5ef1b387f05fa1e5b901a83904bbc9330f5a81e3c333f. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/DGA0P2311395.