A guz (also spelled gaz, from Hindustani / and Persian ), or Mughal yard, is a unit of length used in parts of Asia. Historically, it was a regionally variable measurement similar to the English yard
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 0x79f8ff0535261d9f007050a899d51e30db388dffed913d2fc67683fff981520d. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ef05e1b5-4453-4c21-848f-6286ff5fec2e.json and https://artists.proofprofile.net/proofs/artist/ef05e1b5-4453-4c21-848f-6286ff5fec2e.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 0x83d1b5ed6692373a64f1374f887c3be7cb376a7c61b0d4ec9379f8a467367608. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:12:09Z), 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/GBLFP1758873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e88704c3998918f2f161b7955ec8e38c5f51ea9183d98beab35abc74bf2db5. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:07:04Z), 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/GBLFP1758881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9655b4861ed03f3aafa65b683a85bcb3f78ce3eb0ed470d8efc23a54c5b2e2e1. Chain 2 (Bitcoin): anchored in block 957668 (2026-07-12T06:54:37Z), 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/GBLFP1808523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7257fb8604b7183b0ead5e5d5e756583d034b2c80e3f9bc43a43fe5bcbf32c28. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/GBMA21880302.