Exit(s) may refer to: Architecture and engineering Door Portal (architecture), an opening in the walls of a structure Emergency exit Overwing exit, a type of emergency exit on an airplane Exit r
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 0xa176338dbe21aafe18c647d577eea3202f5eae14fa4819b56e479bd978da223e. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cef7e387-5210-42d9-90fb-9023ac7b07f8.json and https://artists.proofprofile.net/proofs/artist/cef7e387-5210-42d9-90fb-9023ac7b07f8.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 0x371066693bffcdd8a62615ba43224f732d1fdaf56ec5b3ad3513df3f9e26f5c5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPN001900191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20fd3b002edd801d621e31d7478495168f1be972dd3653f3b49eb01df2538abe. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPN002000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95158aa2eb6ce952b56d66194741057dfd1da8c22198c3dc75978b6ce963c575. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:37:34Z), 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/JPU902101383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95158aa2eb6ce952b56d66194741057dfd1da8c22198c3dc75978b6ce963c575. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:57:50Z), 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/JPU902101383.