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 0x805bcec3c6e13c84b32e3fd8696f08bbce6ff464b3427c5ccb5be1bcd666a1fe. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c56f3a78-9c23-49b1-91c8-39e6de034574.json and https://artists.proofprofile.net/proofs/artist/c56f3a78-9c23-49b1-91c8-39e6de034574.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 0x00c23a01d35fbecb2e29ed509013c399f2c41d782241ec8f09ea38af13e167dd. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T03:28:23Z), 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/GX5MX2361242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a940bc154d1064570c6322a2321c5eb3568651a31fdde13569c0f05ba30cb2. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:48:55Z), 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/GX5MX2315133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079365391099c049c67d9d6a88336025f7b9ac51aa77a6b481add8bc3f7dc9ac. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/GX8LE2432704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c9fcc5bb90e3b2694432989e222f4dcfac1c35861521a4e6b4313707881ae4. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GX4R52497225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee303d34c5bd9eeaa225e9cafeba462ea17ea071b3cf072057b2348126c58f1. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:35:08Z), 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/QZK6M2527648.