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 0xa3ae190454ad6b2e9bd97f9f5861f2056b6dea84e1ad66bb172e3b947b1a9f98. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/247c61d8-8d13-4392-a1a9-10b535c02486.json and https://artists.proofprofile.net/proofs/artist/247c61d8-8d13-4392-a1a9-10b535c02486.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Le ciel n'est qu'un immense chagrin bleu
Le ciel n’est qu’un immense chagrin bleu
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 0xeee8b1f3bded0312a0e8fa210f8f2885c4f1cde40df19a18ec796847d2f74f33. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:33:41Z), 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/CHA832297707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e230c0eb3a903e1ebbddefe3c44c38e77dee6091e0d4d087bc678af2b1cdb84. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/CHA832297702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56439cd2dd80672b72d8f11efa2af8623191ef61cbc3c88c03ab98cf69d50fe. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CHA832297709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba42861f2c5392e6f1ca2cf61b8ed256c63930d429fcdf3e10b61a8e0a7be46e. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:00:32Z), 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/CHA830000209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1959ed1cc2aeff115e1b6740e1619df430ff17f3417422e94ad3ba77880d1490. 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/CHA830000210.