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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24777bbddee9f7b9bbde20a8249da3b31d704492ee7e1f2ef5fc8f4b5e9db51b. 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/48c9da12-27dd-411c-8ca2-9098e3856437.json and https://artists.proofprofile.net/proofs/artist/48c9da12-27dd-411c-8ca2-9098e3856437.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Shoot It Out (feat. Worl & Hott LockedN)
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234afcd102953bef0e3fa2f76c7f72cc7fbc143f98f654e85f9d6c56eaf2afc8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USAT21906326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367b5d2acb59baf3b2354730274efb4c39c524d8f7dacc6447efbf92a820c211. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USAT21906630.
How I Feel (Remix) [feat. NoCap & Quando Rondo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf893db5556c4db0999aafb47b27b011335d8b9fe58fd978c028929f8da4c18aa. 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/USAT21905436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa9dbfc7cb6c8d5d227f8a6cc1765eb673f5f401ebadc4e9f2a016e7cb734ee. 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/USAT21906106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234afcd102953bef0e3fa2f76c7f72cc7fbc143f98f654e85f9d6c56eaf2afc8. 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/USAT21906326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5252f0c63b1de9cf5c228dfc49ed7276cbc6e79f5cf4b3768644f7f543bf831f. 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/USAT21906627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3977a050394f877a663f4f0a056979ec6d5ea834cddbad53a34e3fd6d40d8e9b. 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/USAT22000247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763ca2e12b04ca17c59bd6c653b875e787727bb4d88ceb3fc0395b4e7504079b. 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/USAT21906628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557832581bf5c4ca81381a86760c22af0b370f7f34d0a0493b606338d22518a0. 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/USAT21906629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367b5d2acb59baf3b2354730274efb4c39c524d8f7dacc6447efbf92a820c211. 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/USAT21906630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0489d535a952c5dd4e9982c00598bccc46c09487bd449e4b56dfc7e65b0e48b9. 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/USAT21906631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f794e33f2bd8eb19c44e1c03c95a68a619222a859a7151f5c029f407054ac6e. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:28:18Z), 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/USAT22000246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66090507d7a9122e60de9ba9803c895761ab469c7586a68bd5896b5c40fba8fd. 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/USAT21906632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23abef1bb2b4279492eb545dd0860e6be4a8770fdb5e4131ee7430254b1ab601. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/USAT21906634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8242f94ee3cc320405ef898d182dba8119f453e9edff675ca732acd47082d0. 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/USAT21906635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa9dbfc7cb6c8d5d227f8a6cc1765eb673f5f401ebadc4e9f2a016e7cb734ee. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USAT21906106.