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 0x77eb656054dd9e4a9ea8a2cf12376bab1b2b7dca934c734dc1f5b503c82042de. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/80dd5c8d-2444-4116-9ff5-f37d0a9040c8.json and https://artists.proofprofile.net/proofs/artist/80dd5c8d-2444-4116-9ff5-f37d0a9040c8.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 0x627be78a6621615cb814d7e3185508799d8a6ad76942aab031e7e0dd733cb9c4. 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/DEZC62217257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098332ea0bd65c7104e04f72dccd7ac887c2de016f162f2cd72efc95b2779172. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/DEZC62369676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc026bef0fbe67fd683be72aac96ef12b104824c44c63d460492a64856efd5c10. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:58:06Z), 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/DEZC62369677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5e8e6cb670c818a00e29780bbc84b20f835e94b8bd2be2c8df2d509c66fada. 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/DEZC62369678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf53a43696efe4133098c8a695f6652fddeaaa654fcf8b00fbb63fc9c79019c. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/DEZC62369680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46344290cfbf97f32d2af55f0dfbb38f7ab518828540be41e63bdba5cb60c1d. 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/DEZC62369681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34fbd349747c4ce83a656c8f27a2e1f1c4bed396787d195945310a6f9af84e94. 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/DEZC62369684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0451d65cd27b59d992bbb6ab2edf3a2f3049e439e99e7830bd9fcf75f2b4f23. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DEZC62414661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb97f0dd9f13b8952d1c5d6e007753e26c3b16ead404edaa955ed5a00231390. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:04:00Z), 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/DEZC62414662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19917aaf0b4ef04666b762ed0aaeeeabc669ffcff31ce6ba961e99677d84f4cd. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DEZC62414751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8323955976dfe25686ce95aea8ab7045f1514f1aaaa4f1ce6fb2221babed231c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:49:09Z), 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/DEZC62589028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d4e6e7ce1d98894fa2c16d11d7d48b2a31cd75f98d90232cd0069114d7fe80. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:58:20Z), 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/DEZC62589029.