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 0xbc2c38a075ed27cfae247cc1c91d6854a3243463d99307be43ba2f904a8f5b73. 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/711f7b60-6fae-4587-9836-02dcfc574d5a.json and https://artists.proofprofile.net/proofs/artist/711f7b60-6fae-4587-9836-02dcfc574d5a.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 0xa02495b74436880792926fd7d1068c9f284143b181b095e92265085e96fb3979. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/ZAA169400095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc03cc3ab10063f218f74373a7aeb1c33e75370025ed7a8ff276fcec2732b9b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ZAA169400096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574853fa9d82308ff3aaa6347767592cdd520789770144928df4f71faf07fbd0. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ZAA169400098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246866b4a2eed8cf0b1886f065cc8a57f963d17a0bc4f4aff401c51763617be0. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ZAA169400099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399c59016bfd613c100e7ef2925353a8335daadb5c763691598c413ca2b45e58. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:44:15Z), 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/ZAA169500424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da8de1563cc773d74a251e5778b8964d37e7cd7bc9cb6ca252945d65bfffd55. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ZAA169500425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc5e6ff791c5159c83d8a13021623655132f9a5214d2adad4f7976b474befc0. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ZAA169500428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611b5f0535163d03ba57ae500cfb1b8be069d7c73242c9d8f45f8cb12cec012e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ZAA169500429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48adba8592c9bdb8741e09799541a11002c121ae40ebd249fe147136709fb99f. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:42:47Z), 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/ZAA169600263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8816d600f70be977af79069cacaca6c6a26b0c0a909dc1e719f87f8aad5dce. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/ZAA169600266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06aa55d7d96a5548557d106bf28c9888caac5ffd2d526a79a82e30d93daa67f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ZAA169700648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb999f732c67d145ff7f6dcfd0c8f6ce598266935c7cb08137c3d3339f8be8bc. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ZAA169200062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7813f934ba2d52ebdb9518c3c70872df3069e9e63ef0f0a8907f3029c5b5f745. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ZAA169300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710baee63210f7f563814408d3d91153682ad8aead6e66f427162c05e411c1ee. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/ZAA169200057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc915019a31fbfbbe2b544fec38e1371e1e9609beede87b9fe861c05b47ad49d. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ZAA169900344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c466f2e1c53c8639ccfdf24ab904331b397c106e7f956f47cc818737e0a60b6. 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/ZAA169500427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc5e6ff791c5159c83d8a13021623655132f9a5214d2adad4f7976b474befc0. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ZAA169500428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e6dd45941738722e06fdf69c2bde842a74e91dfe7f7504ab2d2c1eb185506e. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:43:24Z), 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/ZAA169400100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcac30e9a96253f8aa6a3d847fe9de1b95ea10cde0c1df34a7acc80978725931. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ZAA169900338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2750ba1ca0c0b55e8d808ff5db87cb1e2fa87098ee2cab97fe766cff6907b12. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:09:12Z), 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/ZAA169800631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611b5f0535163d03ba57ae500cfb1b8be069d7c73242c9d8f45f8cb12cec012e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ZAA169500429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400d19420b1413283e97d4c8413f2620c0f5204255ae31666ad6d257301e6acc. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/ZAA169500423.