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 0x7ec7d8bc043ba47be177fd65cf75577d9c21b37d6bb661df9e99d20fa51c391c. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4edb65fa-7281-4714-b180-777563b5d897.json and https://artists.proofprofile.net/proofs/artist/4edb65fa-7281-4714-b180-777563b5d897.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 0xba9e67d706216b237bc1ed4091a18c90519dad00066d923a91310731da65c761. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/QZTAY2218891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74846628658dc41361e85ffab125e3cf8f5fde320051f446dbee17084ae056bb. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZTAY2218892.
Sacred Silence of the Forest (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72904f89fbb63cd99b4eb9f456edcf4a9ef1cdd2fd968fb4dd9cad82f45d6e5. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZFZ42543830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e2e6caee1e2b2366518567a0d861490a7a412ff32d6e6cd764b2d05c2eaaf6e. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZFZ42542432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2336ff05c3f709f3394d06b74155e021599841b06ed76c9593cdb0b1dddf2786. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:23:21Z), 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/QZFZ42543838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e2e6caee1e2b2366518567a0d861490a7a412ff32d6e6cd764b2d05c2eaaf6e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZFZ42542432.
Where the Spirit Goes To Die (Don't Miss)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5629458f6837654c158baee165e8a32c5359040fdaa6485a65316f8d829f689b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZFZ42543839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72904f89fbb63cd99b4eb9f456edcf4a9ef1cdd2fd968fb4dd9cad82f45d6e5. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:26:18Z), 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/QZFZ42543830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19574c851a7a4dd10cb91c360949d1a4b6c4f4a84a4e44b22eaf29d82242713a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZFZ42543840.