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 0x92678511d4beb68cf98c08a9265398b607857e3858c51dd4ec4f8afbe6be7151. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f31f0cff-b44d-4355-81f6-cca999b837cb.json and https://artists.proofprofile.net/proofs/artist/f31f0cff-b44d-4355-81f6-cca999b837cb.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 0x380e111da9456725b6f7bb122de591a193b1de4337d547a5fb995414c97193bd. 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/BK4DA2307354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf887378ca6dcdedb51a49b51859535a77dc436f6d11fb8ca68e0361099dd305a. 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/US39N2300373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701c3ed74aa13cc19633ebf59d20ae6c8ddcaa1976790a9b2edc1013438b869f. 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/BK4DA2215203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca453d7b63a240bf3eebf09dc6384f97769ecde8b6d109b3d45a287ef1296bfe. 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/ZZOPM2237983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36352aae6ac20e59781d59174fc90a2305a0350462f8031addbab9ce5b2f96b1. 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/ZZOPM2232017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982eaae3afec48e9804d8afc7e5375d0276934d5c9ef50aa2a3889a91f31b3f5. 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/ZZOPM2223387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68734d259ce45cd7d457fbb8e5d19055ef439456c4bad5e740ec9b6f2df611f. 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/ZZOPM2118096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x661f6f3c0188426ebf49bb6676aff9dd36ae6b4f671d89c9108d4c9887851db5. 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/ZZOPM2118871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5f76340b76e793e3d41e37b47513b45f9e95eb1b8d9b834a4e0d9b910bf96c. 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/ZZOPM2108934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc345e1bd64b5ca61c0253b27ece5e9862e9604027b7df9b90b67d28464219e22. 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/ZZOPM2106491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee349781a2dd07ce3e67fc26011e72f02a4f6373775a22c04129de05722ac27. 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/QZHN52112011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16114c156ba9371cfdd9bbeee1bfbf31ddbfc77afeb4bee8f67825e30a92faad. 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/QZES62166977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d886713ee74d86700179cb8af55676d850bc6d444adef381f49de7298826184. 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/QZFZ72164651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5492773d547f129cd4e9f4ad8fee637853051cab973c9ff05ac393b026478c. 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/QZNWW2072932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb20ce94f3dab8f9178f00c49c306a19160e2de30fbf814ab1c2651d66eefd4. 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/QZK6Q2069304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5c8d6b7b6d9dc44fab48e94963c95b198f0d7490b24e112148b5f323fbdd21. 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/QZDA72010173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90c3693b63759069a6ba335fcf39c717ee6e21cf3ade8037ce590b3c731eaa4. 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/BK4DA2413715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9f26ec145596cc53ce9cfa58a6545756540ecd20582fb098b4f96052245ea1. 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/BK4DA2406469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf31898040b00262142f5cf84c2baf0918b79fd85ba6c0f3b14fae026e3fb34af. 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/ES71G2404964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77467865278575a31565b63a980aa95e14648f529273d5c009723445d814d481. 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/BK4DA2325388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d25a1432592fd8d86d8aa41c88d53531139b28a382655984838f0b762a8a7ef. 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/ES64E2204182.