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 0x34a0ab0a7a52e4beab3dd4bf0ac3924d460d9a395a8a316504241beb89b0fa7e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6314c1fa-81ba-4d3b-a1b3-9cc744e2afb1.json and https://artists.proofprofile.net/proofs/artist/6314c1fa-81ba-4d3b-a1b3-9cc744e2afb1.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 0x05513fdbdb2dec432300b19d11c0301d650893fccf5b3c8e204a02980bb4b89b. 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/QZMEQ2251062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21076a717896921742538a5da3c81572a166b4699d38ae6ac28caef05e982c5. 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/QZMEQ2251065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd607ef26227af46fe42cbbbd5f6b2173fa88a66416d015b666c05fc4d7ffb74. 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/NLG662100215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35366b5b12712847e8d7e56f3ebd2acc3add006fad4ada43447758fe136efa86. 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/NL3AA2450029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe459a9d01569e0bbbf8beb8f0d3b1ce2c3f8fbbec7988c757d52910f21bd0041. 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/NL3AA2450026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aaf38400513ee7c0cadcf34554f78f180131890e1af0b94d932afa96d2ef4ef. 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/NL3AA2450128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d5c78504087146cb9475b4dabb8ad9b570d797abd9e2a5ce7bef7720dcd060. 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/NL3AA2450129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac96008a7b304e834a55b96cf5b12287b55d274920577d2f7c0894c960b5c8fc. 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/NL3AA2450023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78418c3c362158714cd7f7245ffee7a4e51c1a924037ad5774dd25e7143d9c9. 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/NL3AA2450130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3abcf89ad56587f884bbc6b1cb8714b2020f46bc793d219a7cbb94c10bc0485c. 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/NL3AA2450078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae9f121c8f40df4bb1a65961773fbd2e70f8a76e529d71e5c49e473860d96bd. 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/NL3AA2500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3abcf89ad56587f884bbc6b1cb8714b2020f46bc793d219a7cbb94c10bc0485c. 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/NL3AA2450078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35366b5b12712847e8d7e56f3ebd2acc3add006fad4ada43447758fe136efa86. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/NL3AA2450029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac96008a7b304e834a55b96cf5b12287b55d274920577d2f7c0894c960b5c8fc. 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/NL3AA2450023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490b41b35fba640bc50c426cc2babb2f1931980fb6f34a714dd7c97e00148d18. 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/QM4TX2422222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3469c0aebc2aed7126af51a4c0732f4026e3dd2efafd1e1e4eed859d47e9c9. 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/QZHN72348868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958fd05f7d1dee86f5b8464c4caa15b540b25cf430a677d6f9d6eed40f8dc3b4. 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/QZNWV2059483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a0dc459673d334a9610a419bf7f8b355d8b8925ed90bf96806835beb603e01. 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/NL3GQ2100675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7662fc76cf753946e87b091e2f9c782c5510f465d1a3d04b6afbcab7cceceaee. 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/NL3GQ2100692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ed249989b93d73d74d0934563d3b5641b1e5cedc03f4235e84a7d082afcec7. 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/NL3GQ2100619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b811c9d2e523a3ac4862b7dd1be543d2f49e300134c0e3958f18d49987be749. 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/NL3GQ2100693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa48bac2f53db18703f8eec2cfc5a4c428c5250e5af8f272c6b6da448b6eab8. 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/QZTAX2212134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf99de5376c86a00b78a44de8d7c0c47937664bac55ac30f276633edbe79d140. 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/QZTAX2212136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9152013f8ad814f44e2d2815597691df2292768da5e53513c9da6fd01f76d5c3. 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/QZTB22268117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94f977875b996272c90459d7b980af9863507e938ed9d11f0f769ddcced4bf8. 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/TCAGL2288898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaad34ca6eae3265a17e6447cf615141a00febc0d6221624d245424d54089709. 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/QZTAY2274975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54609206e3cb1c23e86830c585c331c76060f97b0f3a28f97405f020f17123c. 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/TCAGQ2272621.