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 0x94cbb811570b595a0cc7e7f99d4b26f01250dfc7f4a1cb12cd32d16b9e883c3a. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ba91f292-528e-4b65-9dbe-78bad85920f1.json and https://artists.proofprofile.net/proofs/artist/ba91f292-528e-4b65-9dbe-78bad85920f1.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 0x1fbb12761d157edf9226a3b6980bc696f86c5eeef59ac8ef8880b375f8bf2c0a. 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/QM7282029520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb579d1a52309f3d979ae899793d0e559b90366aaad2635f583e7ce14d346aa0e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ITB002300663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0acb15980125dbe9003c51c5a217c6712d15ce5248169dbc3847312d7f817e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITB002300664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350a028f6eff5d3314319b9553c2bf9dc80acb4c5dd2c97b79e8d3a64bc9ada1. 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/ITB002300666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8feb2fecb30c2e7767d62759a871d7e7e6e23bccf4464dcdf5235932293cda74. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ITB002300171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101bbde6b71e356cf3b32d3202a7415512c9e991c0508267457aad63088f2b7e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITB002300671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f79410d5ad6a1920ddad3fd7c209ce60b13196b2c32860f5ca0a3b69c185c69. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITB002100330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6927673bc3952e281f69c28693db426f091a2795156be2e6ea5cebd2569c04e6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ITB002100207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd700771c78f722f910d411f560f4a51769c3d8b180e88eac7681e5a9f25e8897. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ITB002100334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd605d30664acd33cc406b3881067bce62429c3f0b9d9646a427cf0bcd05fd007. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ITB002100337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d583e9eae06f25a4f1cbcf681c11edcef0e22ff10b9c098cdc8536ddafc3ae. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITB002000708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449e1e39cf64e6d5986c5f3fec1210421c8293049b1b3d2d0aebf5d5fe8e18dd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITB002301565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8feb2fecb30c2e7767d62759a871d7e7e6e23bccf4464dcdf5235932293cda74. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ITB002300171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138e586529e270ed1f36b52c1023cd52799cd5fa39239a57f94585f3539ebe1a. 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/ITUD52100111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6927673bc3952e281f69c28693db426f091a2795156be2e6ea5cebd2569c04e6. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/ITB002100207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd001d5bbfd1d1ea67de66c4353fc74c2d035fce00e46c2145e21d744897389dc. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QMBZ92055066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3badc43bd8c317b2e75de23c7d924857e9fab94c07521ace5d410c38982f6c7. 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/ITA642000047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1878188e358d1e4c4f026507370cc73cd319cdd1098fc78fe97f5c7c57ceaad0. 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/ITA642000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed028a1efeb44039da652b6204c453a776afa9986f92528e54a57594fb5d198f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ITA641900124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb100b271ece782e8983a72477745c9a0344cfa3b465f0137a04612eb62b13568. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ITA641900125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7762af583280847896ed32f035397b590c8f2f6d859b1a7f313b66b4e7cfdf45. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ITA641900080.