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 0x067d75e268a5f3e9665dd597ba7b7c3b378280d8446af4ae566500491d655dde. Chain 2 (Bitcoin): anchored in block 953875 (2026-06-16T02:12:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/08b74bba-2aa4-4d21-8c20-400ee8cbe5fd.json and https://artists.proofprofile.net/proofs/artist/08b74bba-2aa4-4d21-8c20-400ee8cbe5fd.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 0xe379250d7079569e4e5a4134c855ed4ff94b7e20cef30a15720dee0626bd4c3f. 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/GBLFP2591050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8741f4ac488b5e6ed059cd734182fb84e973b99470f3273f5668eea466aeefd. 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/GBLFP2591052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2b630dc3addcfd3e0a7b4f0b5b9e56f86f84a8d325a98338a720d330d23ea8. 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/GBLFP2591054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e81330e45410a3b2ccb9ccfbeceb3a9a29c965e052a811a320e33ce7f5efdf9. 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/GBLFP2591056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b43d57c8112962d0b30cb5850eb9b7a741eced44d2c31645881c8dd975bdb05. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBLFP2591062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4d4dfa6ee10b22368fb1ad1baad36dfd3c64b7ac29acc856503e041affa4b1. 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/GBLFP2591063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4062e31d29e3b2f72a3dc28f27c5343771e2e243a3f3a2d2799ca3ebf5c54432. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBLFP2591065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38aad6c49c7f94804fcf84b0bf5517345ac07a14347bd67c6f7967a708a95910. 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/GBLFP2591069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa127355a4935a5b61af0e32053a36dd2c61477bee459ecbde228dd88f10ab122. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBLFP2591072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11bb1c2a1ee0ee397e0540c7b43351747ee703baff7a9fbfade3cb3dd56f9ff1. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBLFP2591073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15219d5c03fc04299820920c67c04a2390d3b94a2584c63c4c74ecd920d6d389. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBLFP2591074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafcc07ce930c159f689efdf92d748ce5150736116c041076f804e18d9442b7bf. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBLFP2591075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234aea18cb423a23efd473d4b8f1a05be2a1069d480ec578eb5043f967e78bad. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBLFP2591076.