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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564d5c3b6997e852dc80d6690298f2be59416945300b5c56201b9956c944aeb9. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e3f73f10-0895-4127-9759-6cb60080218d.json and https://artists.proofprofile.net/proofs/artist/e3f73f10-0895-4127-9759-6cb60080218d.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44129784cb62d95203da31a98b92d6b29b8b2fe3724940411ed06b837f9b598. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZUDG2400436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a7db7d66e91a6af876978a8ebbd5034baa06ada461a647fe8ca86d91782f6fb. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZUDG2400437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06944681973da018097fb4e887467b6e8a0a11e0a90f5d539a0859cbf549222f. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:47:35Z), 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/QZUDG2400438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x696e74ca5f04fdcafad9125d3489cd1c01bde5c63f96c5b4727847d6682a9c1a. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:18:00Z), 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/QZUDG2400439.
Waves On Sandy Beach North Landing III (loopable)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633973ee82c323fe9c326c7314587f6e393afee216c49af143cd79f1ceca6357. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZUDG2400442.
Water Stream Into Norwegian Mountain Lake Birdsong I
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c9b84ac894e644e0948ba56b613367a403068ed1f97620b67ea8ec69025bda. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZUDG2400431.
Water Stream Into Norwegian Mountain Lake Birdsong V
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896190e6847084e97a1f90d9d7601f125a3aeba56b56722eb3afe49e4609c883. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:17:02Z), 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/QZUDG2400435.