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 0x148147e29893d38fcee3172c025263ad5d22975a74891a8d999a1a3eac345bed. 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/f042df38-ad5d-4b84-9673-2d867bb848cc.json and https://artists.proofprofile.net/proofs/artist/f042df38-ad5d-4b84-9673-2d867bb848cc.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 0x6be2af7cb3119ee4dcfcf1fe36463e93127060027ef81bd33c627bf2f584ccdb. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZ5FN2178035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337cbc69b07bd727dbf82ac20c573fdc9099dcc0e7b3aca74fa1d0fbb86c454e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GX5MX2281084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef0e043bbad3830f8835f47268b3315697179c5b088cf71b69ac213316f7ce9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/AEA0D2173273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0da9e3202d3f6d056b8ac45e01a9b5be7daef87763f3755c56a794ceb525bd67. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/GX5MX2281255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c4f09a8cb2adecdb0037124653f024f95799041fb158604f58389b77ed5ffb. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/USLZJ2111764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5eb6d5076d1684e9fa26dcf2695819c1e93e9994bc78a4888522b94cbffa03b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NL4NL2113030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae360e172d5060773001f1ab74eccc25cfd5e1217792666abff7d9445a0a2b21. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBRKQ2247195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c873ac354a04fbcf04a82581412e044431a5da08e82787a42effe0a011cd9d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBRKQ2251212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181d27afdb85dbf8636854ef106ab0e480aa5accd50f48a70e503c80c66db7cb. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USHM22261041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f3eb2b1472b88fc5e4fb5abaa0fde2182d8bfb7a76a1deedd444571b86b7eb. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/AEA0D2166915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640e1ba0c8ccbf1e76237d2bc48382af157c6e7f8482bc521a3a9edca13abb8d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBRKQ2241954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8d478116d35f1d0afb4bb7d9323b0845cc3d205d35719fb482d9c3bfc147fc. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZWV32395574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ec6f5d16cc5e0be0a8a1929e4488e663ddec257880013c78ad570e513fcfb7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZ5FN2301128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3d89cecc2062628871fe92d064e62d07251c9e797c10891dc67df57aff44bc. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZ5FN2301147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1a58647791295ad1eb8998d7c78742a0725e342d978fb8c5eb267b1f094560. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBRKQ2247135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb80f1d3643541dc56304c317461575003442ad115ccea9a6578f61c6973994c. 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/GBRKQ2241952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f35242b62cd87ce68d70cba89db92b311395b2e67ea2c56df13a61b115f4703. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USLZJ2077879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb10032f081356ded7893e8cbc4508ee4432cc4d86a1dbb36f01e02e1ad9375. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZZ8B2398974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e091898e05ef72103b5e907314c55ddca8dfb012d2d56cfc3f399d07207512c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USLZJ2144871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ec3a66d4e5e28b3b0c9ffa6e25fd59e5b486ef2b550008ab6564e262281056. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ESA122406830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1aac6ba9440eaaa5c51afd2e2e1b2bd3475f81a37e0de3ba9c3bbf39f83f4a. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:35:43Z), 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/ESA122441922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3b7e001ba13a8e0c20c5fd49de583172abae0c6ec3747ba501b3c0c47085cb. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:45:51Z), 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/ESA122416633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc92ad6eba468c04f6bdd8cf3fbe24be094dbb93712578306e20e005567eb06. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ESA122416634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b749aa3d34b2abfff586514cf3b8ac239898411a5a8e6617084b223a4a6a1f. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/ESA122416629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f942bfb037932b58323c666ece5cda5655c6990028268952500f3d23b3cc0e. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/ESA122479236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8702677a83e58b4a42ad3d09b06d25d405ba2e8360dcea6d98d0e49a8ca543b4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ESA122436018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4436e5bda9a497da426f29c8bf1bbee17bf3fa2d5957e0c358fcb373c145787c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ESA012403818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31b15e8558a27799a123a87760ebc44767cb5a463bf9a6110f6326e00a54fa4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ESA122436017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf2f519884ba495c0c07cdff1da4b92c631c612c8e0084f94ff994af898c40d. 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/ESA122416632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1979a844eeac3bb150deb724b74b207fca10d95162b26df67c44caa602db57. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/ESA012448506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5a1b0782a2d0d61612f06ec0bb8811b7e9c26437b65e13050949bdea81f905. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:50:33Z), 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/ESA012481040.