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 0xbcbb82ed34b5875d092f0161ae4c1663b284a41d2ebfb2aa8ac6ee454b82ceb8. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8088faf1-2547-439e-8430-03a9883d0baf.json and https://artists.proofprofile.net/proofs/artist/8088faf1-2547-439e-8430-03a9883d0baf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Shadow Beings (Until The Sun Grows Cold V2)
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 0x88a2699d39f2bc0fe391e28474062c95187899a2d8727326cf820f83cd5e2765. 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/DEZ651600131.
Live at Rituals: Suicide Circus, Berlin. 09​.​29​.​16
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19836f3e2f2eb7ac8eb1b97a60a80c2c0fcf370e4049126391db0d7454015b0e. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:08:49Z), 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/QZTAZ2432162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20506db6e2905eb56ac2a66cfa793dcdfd97ab66127d151c6c5bbc254948435a. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:25:31Z), 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/QZTAZ2432167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3160b410cfa6213a933c8d0cf1543ae978cf5fca54857991d1e216209d23b627. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZZ7X2418019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b0220a12c2572270adfca756889b180e1cc2486db093c5255353a86ef14c36. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:28:26Z), 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/QZWFV2417597.