Saint Charles may refer to: People Charles I, Count of Flanders (1084–1127), Blessed Charles the Good, count of Flanders, 1119–1127 Charles, Duke of Brittany (1319–1364), Blessed Charles de Châtil
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 0x12a2a7cead49dc1457d0a2fd91f7a28a7d838fb4f357697b0f1410fd2093e94c. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6a5b64f2-0938-4cbf-8f6e-1ecf24663699.json and https://artists.proofprofile.net/proofs/artist/6a5b64f2-0938-4cbf-8f6e-1ecf24663699.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 0xb81fee53563726904974609f35b66db5fbc637eeb7106539e707e33467dbee14. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNWU2206259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26d05eeffe40a9db7bbc63de10b640375a60fa97ff8f81279191368ecf4df2c. 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/QZPLR2453895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df4d8f958a53cb059632f30ef28997e2a966d16de714e88ff98c9ae17481ec6. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:42:48Z), 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/QZWFQ2456976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6303aa4127a7c7e3c08dbf94cfc93795fe4f2ab48af1bcd8e0725fd87a4f7a. 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/QZES72516665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937a3bfc15cfe49f8987406c37e912b1bdf4cd96e6cb6ef4a693960420aa4b71. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:04:01Z), 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/QZMEQ2594240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf308192607709f67a52a99d2c24db94bacc586ee64ad3ddbb37b15027f6351b5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZTB82570021.