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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 0xd1f3c27d9ee618e555dbc34268aad9652379e69526c3deeec16bf47f4afa8cae. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/127ec762-fe5e-46d1-8455-762655295dd5.json and https://artists.proofprofile.net/proofs/artist/127ec762-fe5e-46d1-8455-762655295dd5.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 0x6fce0f5e11cad7a6aa7574a80896c9068d615ff5405270303735bcbe8bcde7c2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPFL09102590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32ca57c4df5c65c1d0749b041720fb1c9c5a6245dbfcd2f5c6c0e3d97d75c51. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPFL09200470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec4d065b55ae378cf06dc251473fe66eeac6f3dc7ca2819a5e80340b9a7a7c0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPFL09101200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b158ddea59e2d94f1f254cc53f407dd8dd7482c1aaa28f171e2c7dffb9bf9b. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:34:37Z), 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/JPFL09102890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924457f42436227e17db91a07efc7457708e568fca47a6d5a724a0167e54d516. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/JPFL09102880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9a751d0ee80193d87a1397e50453326405cd1c8a2e94112da748e947bfa461. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/JPFL09404000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20317a6e32b47efcc4d1ab5f3b9411f253dadca9dba401c1873e147435c3c181. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPFL09300900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f269c73a1893f26a97d2a50603a6d817ed624aaabe38b64e0c1e04b7c28fab. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPFL09302250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31501a7f445e135636c8b1b685e7ff854ed007ae39b6ec5f53f10c5daf910af0. 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/JPFL09302640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d44af91422a1bf0c3adf8edaa8493e0c0975c0bba26574855e922921a6841cd. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPFL09403790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fce0f5e11cad7a6aa7574a80896c9068d615ff5405270303735bcbe8bcde7c2. 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/JPFL09102590.