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 0x6b0fdce67f31480b8a20a18e1dc42b8b23663288c804373043cab1aed1f683e6. 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/b0c4b530-47af-4b14-839f-8941b831218d.json and https://artists.proofprofile.net/proofs/artist/b0c4b530-47af-4b14-839f-8941b831218d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Warpmission - Marc van Linden & D-Gor Rework
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 0x6a64887b08360b71faa1169f745402b7c581805c138bddc6d195daf488094f41. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEAR42480338.
Warpmission - Marc van Linden & D-Gor Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc904a3b035f4cdb008a68e84135dad655bb867627a684d5396061ef18fc552f1. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEAR42480065.
Until Monday [ASOT 659] - Mac & MacRemix - Giuseppe Ottaviani Edit
A State Of Trance Episode 659 (Who's Afraid Of 138?! Special)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89929db806e3e034557b4bf9bf3b54fca7a7260a139138f86faf60528b661611. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/NLF711402049.
Forbidden Love - Marc van Linden & D-Gor Rework
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16542ab0f2d4f9a4591dd899cf1de69161d417d62ca12f43e51ec0f493e1ca2. 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/DEAR42461909.
Incognition [ASOT 236] - Marc van Linden Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f8fa40fd213d9b6fc57e60c7a74dc954f23080772ef07f652e22270d25a228. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/NLF711308699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc192569c6c174f39c4386f01b2a8f2e17407b2340ba0e83fa5345cfd889c2c. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/DEZ171701584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf56f6a90a12fc3446a011b2c44858c0d610f723d8d6256e93b62a83bfd9a7c8. 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/DEPI82219428.