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 0xd420afba764f1b03c4fdedc194223b1f34fae74804e44d532efd49d176c022dd. 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/af262798-8ed7-4285-8d27-61faf376f50f.json and https://artists.proofprofile.net/proofs/artist/af262798-8ed7-4285-8d27-61faf376f50f.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 0xb8ae722be7416969e668a8de5a3faa6f225158292fbdbe9034cbb98ab20f1212. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/TCACH1500826.
Non C'È Altro Trono (feat. Cristina Larino)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa900396bc9610fcce7841c18b53fb5a26f69373da464a61f99e04e3655a4c7e0. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/TCACH1500829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aff2433560a79e97fa5deb7a7e316cc381e29d614ed4473c7d092cb17459c1e. 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/TCACH1500830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b31cb7db528a48989f4cadaa114b4f21862e64383ae83e256aa5e2e73f5842. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:34:33Z), 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/TCACH1500831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e350524b3688c1f93028827be5e21f2d4f01db0acc966f67e777ed31194cfec. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:01:32Z), 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/TCACH1500834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeef866420374ecde9041e043298a357000ac4f78b2c6595c9025734cfc30a81. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:35:00Z), 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/TCAEQ2077872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc2b494759a1cbb282374e13cb78d97a684607408b015da7522a0e043a9db59. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/TCADQ1820364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f5d347223489878a08e012812672e27e0babeaf1022ae4f1a6afa2c11f9b5f. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/TCADQ1820366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045fd2e44085be358885bec42c195936b846714b691f14fb3314b023b0935fd5. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:05:33Z), 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/TCADQ1820370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7b683d0b5edbd7b608b2341ff79ac5bd46c686c353936a653db5d0f286e69e. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCADQ1820375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad135cedb91d0681096c5f9989b2b6d71ddc0f4c11701ff276a524c36798eacb. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCADQ1820376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68a1cb769d39c86dc440f69bec48cd144244b5d2a8de96d2adb02b4fb83e2eb. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TCAFP2114826.