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 0xf053e03155962836c04cb41a763fbcc5bec8eda7c497cde42991d928040de6f5. 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/a96fa982-1dd1-44be-814e-5be5b06bf79b.json and https://artists.proofprofile.net/proofs/artist/a96fa982-1dd1-44be-814e-5be5b06bf79b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
There's A Light b/w Please Accept My Prayer
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 0xb26dc22dc4538c606d40e059e473c378372abae17150e73f99e51ffe2a8ae590. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:10:28Z), 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/USCW61040202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7234af7e4260b0dc16ad1f6de146441fcfd557d24136b7bbd0d4848046fa96. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USCW61040204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9df9195e0d8ac3434b6e931b11c18670707c270ec32910fc4f30a8431eecce3. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:21:58Z), 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/USCW61040205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e03357b937faf442f07a42c452f14cbe427035a2d06ba528bffbeec8d6c4d3. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USCW61040207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e40d24865960c63cbe294a2b98bd79983eb3fd0cb8682dc8cbb11b92a2fb803. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/USCW61040211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa33dda21f606a8a376185a78d7d1b76707309bdd2e4a331def10fa7691f70e. 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/USCW61040213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b1df716f6b17326f8d61a72c3549df1177b17febdc1ec5bd3f67f6c1f22292. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/USCW61040217.