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 0xd44fb70aa387d67ee1773be3da28d59d5eae1d9c6c3669189d80cb6c6c46f54c. 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/c4e5ce1a-24eb-48fb-98b3-01119b83978e.json and https://artists.proofprofile.net/proofs/artist/c4e5ce1a-24eb-48fb-98b3-01119b83978e.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 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 0x1cdc712e235738a7010987b1429da31afd5d3d7c53a6b4a1eeb75344f5d0e34a. 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/CHA012200166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5dbd448841f9223cb55ea5b14cca60a924e70c333a488dcd1070eba59dab80. 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/CHA012200167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399807d6b853b449faeeeece40701d587e9d5ff1b92853fb441ed8f971c1daa5. 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/CHA012200168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70573e781e57376cfb9d5d5de69df1b1fb91027363c4c4ee0176cce2d1cb0048. 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/CHA012200169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x673fc994613294f3febd3374aa8506e48986ccef0d9fa4192e1760445b404663. 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/CHA012200170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5acde8b524b173533422414f8828c51fe62dcaf2ca403cf9006c75c7b22598. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/CHA012200171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fee2d4b9d8aaa831219a61e95a703854d7ba8b48c3cb0c3ca9f92f8dc22e3b3. 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/CHA012200172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa652020a48d38ded01a2776f9268dac526cae4a7f08fc5a481e297f5cdd7c637. 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/CHA012200173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfafa329b2abd8a46a1cb64c97bc5b33b7843a6be584d4ce1d6c124e0141d884c. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/CHA012000567.
A Sea of False Smiles Hiding Murder Jealousy and Revenge
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3879d4d2837888d3083cf4189f46d43da365489fcc13ddb94d3b1da5366c6e6f. 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/CHA011900658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9b939238cf464d3d21a143884f09c804d95f2ec2054b849f875707f0e84cd8. 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/USQY51585373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a0f4c0f0492d92111f125c72da14e008e6410449a4b8ac2d75d51cf71a7aaf. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USQY51585374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc83c13af56c3685c886cbf0531668d03759f5c7e3c1a29984b5f1a42e66d420. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/USQY51585375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4429cb5e43f2fa251673a695837d77f22b567dacef215a38cc64f9e5c2a49ccb. 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/USQY51585376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52820ef0272c11bb51e3ba1f7baa8904f90d6cdf624c682a28ac67633d7e5f37. 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/USQY51585377.
Carnations Were Not the Smell of Death. They Were the Smell of Desire