Patz or Pätz is a surname. Notable people with the surname include: Alina Pätz (born 1990), Swiss curler Arnall Patz (1920–2010), American medical doctor Claudio Pätz (born 1987), Swiss curler Etan P
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 0xf5d3a73efeb102d8988053b2637bf9c87685bba9e402a25829fa519be6adfca5. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c7c641f2-e64e-4d72-9c81-df81b1c92c6d.json and https://artists.proofprofile.net/proofs/artist/c7c641f2-e64e-4d72-9c81-df81b1c92c6d.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 0x2a7342cc89082630e395e32eed13425abaadc797f6f7ba08dc3a37736ffe76fe. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:51:08Z), 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/KRMIM2424725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec328adfdbb780f20b30848fc4fe71dc82a16ed2514944d167826160e56479a. 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/KSA002501040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5353d85276bf1b52de0f37af4a2b474448b39cd302312bcbcc17ca598597e1. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/KSA002501042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0459218c9f3ec8c4de1e4481077cf3db6319af5a2f5db6ca7e4b1e747c30e035. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/KSA002501043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6fb52fcb59b4fbe88c6b3c615cbe313e7b01313b6997aea66386393c5754704. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/KSA002501044.