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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2122303d39373039ad0220fb227895d49ac9b36c2d68fc5d4dda7f3ca7c133. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/47d0b19b-ce77-47c1-821b-e341816141a1.json and https://artists.proofprofile.net/proofs/artist/47d0b19b-ce77-47c1-821b-e341816141a1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
As Far As The Eye (Original Game Soundtrack)
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8542ea4bd966f8d1c9446508f53c6392188b189eb371c5c6ef2c7baf5587c81d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FRIDO2111236.
Have a Nice Death (Original Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c0492d04cbe4979bd3abaa0f1c49dfe51ce1b80f7633799d76b61f94e4318f. 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/TCAGX2359690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a379f85ab00f8c95c708b96af3da9bd88324b761767ec2e1d6270135b154bc8. 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/TCAGX2359693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4845ea334c338e929eefb3a7d027eed859f55efbbc47f13e4c0c31879ce1ccb. 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/TCAGX2359696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12128333ed8d78d4b8cc12f5f1ee4fb02a4fea2dac93f1f4f3abf0c2cdbd1157. 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/TCAGX2359707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76904884b4166898e570b2e56e8d7d4aba0144bf16583a9bc6919cf450eb5ce0. 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/TCAGX2359709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f8e6509bb0e7a0fb5f01fe151a16affc0913e286bf6dac0fef42ad4916849f. 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/TCAGX2359712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5290c4dc2d53a481a2f5987c48de78bc8c4c6e9af28845ed69765c1ce7cbb051. 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/TCAGX2359716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db85561b7354433cf31736c5737ac28e52738d856e8ba0a8b22eec36f5a30af. 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/TCAGX2359718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754faff09f78c5c96ea97f1eb89c0da6c7c637cea41d979f594d79d9bee15c50. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TCAGX2359754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480017e45fa8cab5d15504459ee5132ecc2a36a5a5dcbed20e5f05a5b105fbc2. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/TCAGX2359761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb3ff71418f478cbd94adcdbcc93e1bf2dbcf087b1370744915023f2dac79b3. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TCAGX2359762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78a95202e9980404d64197fa7d3538b0bb59e4c6ad3ef60ca99e253772bcf79. 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/TCAGX2359763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867fe4768e89ebdb6b669f297629a8f578cba52935ece850d7d213c366b76874. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/TCAGX2359766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9f4e5dd6ab89f1cbb33f7e31716c66cb77c3e699f5f5c0587bedccade71cfd. 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/TCAGX2359768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c2b1d9d8f0d0be4d3b38b5342c32c5ce4f83a3d42d028f7f8177adde58033e. 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/TCAGX2359822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296644f374c5c121dd64be780cd496379dabcfd29cde21973772fbced74b43a7. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/TCAGX2366601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1f8e74eb51c09af46df43aae66a51fb0f87c705169c9a4f379443ef21333ba. 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/TCAGX2366605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca1ca7fbefcbe9d9f474b1c5df5f4af6871670b83a806016954363f7daa16a7. 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/TCAGX2366660.