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 0x44291ea550734639b28d054e2652abc82fee5613760219f19767aa495bd8d789. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/98b13f4a-3a5c-4800-aae0-ae71fdbab074.json and https://artists.proofprofile.net/proofs/artist/98b13f4a-3a5c-4800-aae0-ae71fdbab074.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sweet Soul Baby- Rare and Hard to Find Soul 45s
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 0x0f1421a83c0712fa2bab8aa64300508bdc68bc2458671af133c6d65fc02c88fa. 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/TCAFM2186869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f304db7dcaa63126248a032106caa98c18d9f350075acc025465f9c8ee36d46. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAFM2186900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9a97766adc559ab8e5786fa1391da4f9a09c66712dfc488eed552428f9e002. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAFM2186921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291df20e44ddbc7ee74ef97bbb987b076d275eaadea7c232d29c6afc97546bfb. 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/TCAFM2186934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d2f2ceb36cfb87c98f423da49418dc55b4100c24c9adcc7a67e6aef83c2e35. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAFM2186947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406ccb2505d503e999b0be89c6d33c174098ccd838f415345da251d47564dc6c. 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/TCAFM2186951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4730be7b5c6cfb6fe8df2d7b5556b55770a2ec0403175614dd772055197365. 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/TCAFM2186956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64615760c978e1ecce01ea6f3f4c8699e05f3a0c0e639b65e2ad7a3e30d74657. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAFM2186961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283a1fd4ac5622673ce34d93ed32d87292e58d558a7f7576d7c3bd7f7561dc7d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAFM2186968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda723550e1e15c5820031fd5ed64f57cb8133f315cba07dd9801b26b85cbeb75. 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/TCAFM2186979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a3163da80d0ddca4d297a4dfbb58f392f2f08241b83270c24fb1528404e878. 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/TCAFM2186986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8edcd69970c0fb09797ccb4838b67556dacdbc9de5fc598336d2b33bb9abc665. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAFM2187061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffcdeb0f139c4bff92351469c81d9cf6cf5785db31dd1dbdcb7894aed960840b. 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/TCAFM2187065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b4170d1371536737e04cedfda131bff515c707e5302e877575d035fd74ee01. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAFM2187075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c185f20912c9863ad21f2401b05ea36d07b6bd3ce82ec255eac7798aed5a5d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAFM2187081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944159923ff585f3d37643605919c47a0a986c00c6405c7f7ad2feef7dec568b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAFM2187091.