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 0x9af4694e859a8671d72e0e6220f92ff32995ce2e1e3832dcd00798980bea2265. 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/d853cbc4-4da6-419b-87cd-8625dad07517.json and https://artists.proofprofile.net/proofs/artist/d853cbc4-4da6-419b-87cd-8625dad07517.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 0x8ca34e8fe1746fd0abf33970c63e51a2d26b01916bba367ccf1bb8536adbbf03. 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/FR8E49800270.
Kitsch Remix: Another Sabotage, Old Stuff with a New Beat
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2419a2cefe4be9fe5d393c10c85c08b369f09649fea6f280525c477fd2d0017. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/IT7150112702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62dd7c2ffbd8f9bb5756e18a5701aac835c8a85b2cf557401f58cfd5af213cb7. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/IT7150112712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7bd7c6979f4373937048b0690f372617690fd07a23c09d72493ee878340a1c0. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/IT7150112713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd321695782c4b437ec9e01ed09969d9d5db4f3f0265b670fb54242cab512370. 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/IT7150112716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc814d1be96eb08ea4f3ca29d49898e2d7d164d9b0f6cc07cc0c3b01389ae7ea. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FRG140200130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309a14fb5bf30ab565b0c2286b1aac8f6710a75dce309a6de8c85f81fed17de9. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:26:54Z), 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/FRG140200140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b722b63b741cd6dfdfd1e1d859efb770c3cf6a59a5bf5bb01bda11f74ed9b49. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:50:49Z), 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/FRG140200260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd36ddf7ff7390e27a714d811a3e6e980011ff2f37f4b4ec792425da120e4464. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/IT7150817614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1d3adf9e3d497fbe27abb72bd303927c4a4010b253c5a2c3526120d42658d3. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/IT7150817625.