Yuma can refer to: Places United States Yuma County, Arizona Yuma, Arizona Marine Corps Air Station Yuma Yuma Proving Ground Yuma Proving Ground, Arizona (CDP) Yuma Territorial Prison Fort
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 0x98be83a6cdfb4d9b2a0e638b7f0739ffc24d926a1510dd6a0e18d444ac60f2dc. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ab6a6cd1-5faf-46f5-9be3-5b6b1df2a3a9.json and https://artists.proofprofile.net/proofs/artist/ab6a6cd1-5faf-46f5-9be3-5b6b1df2a3a9.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 0xc65a4e3b61fae72865f45c212072ae48e8d6f8f54ce03bf6fb64b88c6212ef18. 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/QZHN52470495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6669948f00a1e0a8ec5d0dc7b9653c9d91a4d60d6267af4fa233fdd6fd913999. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/QZNWS2408637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3651d190abe8a65ae2ad0dec02087cf321a468f01feb90eb391c4bea7c67d1. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZRP42449309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c766904582d02f4ec22800a95862e971e836f39fc2f8dfc7fc30c50ff954969. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:24:55Z), 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/QZWDW2435349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1387078b4a5ba1a33d4a94689ed72bd08cb5940224c4467e6f1b71afe4a046f3. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/QZWDW2450662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5484810de355d142a631ddc3d5cf71758ce96ebaf680facac19ae98f166bc7. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QZZ7S2429137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x683972c3eb9692432bd00edc6c0fdd58641db550aa2714eeabe9312a57ceacef. 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/QT3F22411415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0762e5f560a7c8d217d32478391a9e69ad20da9fb69866212f5a0da5e096ea3a. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZDQH2504692.