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 0x31bd690969bd7c5b1b6d238173460d8229e712b888702e8f6d321452402e9513. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/22484b28-9f83-4ccf-b7bb-70a7b51248ab.json and https://artists.proofprofile.net/proofs/artist/22484b28-9f83-4ccf-b7bb-70a7b51248ab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I Guess That's Why They Call It The Blues
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 0xb766594825a1fbc89eb8e817ba9ba91d030f2f842887a8b8c70bee52f53d869b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZFZ62484521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430f0efae07732508ee507c82ebc9447b7add4f409637dfad4f93560b901c24b. 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/QZTB32454288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9445fb51ae6f65707b4f1a6e41b1a80f4855aaf76b747fc495012bef43c90e6. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZTB92450497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4bcd867ba973dec36eeae8919672266270d60ae02350a9d3ffd3cd5acf80bd. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:55:19Z), 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/QZZ7L2403610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d9c6bbbb1c2710efd2fa0ee4d56f77a2330022bfce8c4673fa1e6b22f5baba. 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/QZZ7R2477603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039639c076c2869845ff09d41d6240aae33677a5ce5db2cb69c9e8628fe0b36a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZZ7S2415574.