Pendragon, composed of Welsh , 'head, chief, top' and dragon, 'dragon; warriors'; borrowed from the Greco-Latin plural , 'dragons', is a Middle Welsh epithet meaning 'chief of warriors'.Geiriadur Prif
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 0x9cebafe30ebf01a3b76201dfb582dcda1f123dc6a1d2e227776bb1aaf8c47e72. 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/a4d66a19-c3c9-49e7-82a3-155b6ef8369c.json and https://artists.proofprofile.net/proofs/artist/a4d66a19-c3c9-49e7-82a3-155b6ef8369c.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 0x01190ffe07536ec26359552ab4bd34f539c303851ed372805634aa71b8e34057. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZW9K2348002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a11f667e3eccb527b8acea6d169ad1a0a5b7685b7dfa34def57196f20c28fd7. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZW9K2348003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75d505b4db775101f2d1a32ad468a2939cb8e3fc70e85374d6d001b63772346. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZW9K2348005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de187cd172d45681a7541d2dd64a5ca4752dad7143ca54ebc8bae1fdc95ace1. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZW9K2348006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa210065cd69cf1cf631ffa7e41e4de75c6d588d947a93941424eddefeeecc2. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZW9K2348007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c7ea2e516c0584354c6040881032e31a6429181aa9022b489af7133672fbef. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZW9K2348010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a18ed54470a2277370ae80d23755dc3122fc9a43ee2caabe604756b4da2abb0. 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/SGB502588236.