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 0xedf079af320f79e3a093864090bd27398eba85ffac2e0c6bccde2232f6145bee. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a41ceb8e-842c-41cc-93da-e370b3b8c876.json and https://artists.proofprofile.net/proofs/artist/a41ceb8e-842c-41cc-93da-e370b3b8c876.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 0x6af88c20c49be9afaf8627ef00a59ac2be59698c4d6b101ec96d110945b32980. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/GX3Q92531946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a61a524cb543d9403343388853ad1f5a15d4957ec6ce668be84111052e0ade. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:53:56Z), 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/GX3Q92531945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7baa4272939a65b993aca8288336650962886376a144f9bb2e047ac6fad23c29. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:07:56Z), 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/GX3Q92531947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ff691eb2b0eebced2517d753779c74ad1669868c0a8e860ad0990d21954986. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GX3Q92531948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3730891672cca38a086bab7bed90b6deb1280de3133bddecada0463b6b36e460. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-17T08:41:52Z), 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/GX3Q92531953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c6aeba33d2c47367016682ef324b31d76a9d0e2de5996e273846fb091bacea. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:46:43Z), 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/GX3Q92531949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a0714a3c3623c87cc6305069acf26b6d41f645e5c8bfc240adf7def8f6f3151. 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/GX3Q92531944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75993d8ed16dd3f94d42edb98c63e9d9c49afeff0fd18aaed4385da3631a841. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:00:58Z), 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/GX3Q92531952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ba39917e46b756bb89148c751b46bdf659e0b6f83ea77892f0923fac8b17a1. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GX3Q92531954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f61a2eca59611bae2e046be662bccc65f047233b0706d1fb1e0bd23780b80bc. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/GX3Q92531951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa928fccf670f4c66fa48674ccce6d41564a8d42d1a110139e0db4a22d8e5c58a. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:47:30Z), 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/GX3Q92531955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc441acef55a6310ce4ca2a17f13a84731892d2c06fcd535ff2a2faeafa85dbc9. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/GX3Q92531950.