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 0xefc49d37084a90aa0e234b24dc6e187eb54c3c3aa6b41f22a96399a5ff011691. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f8e043d6-1af7-427e-b18c-b5c09a0feb63.json and https://artists.proofprofile.net/proofs/artist/f8e043d6-1af7-427e-b18c-b5c09a0feb63.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 0x483f409402c9d69823a579e0df733a89fd1c92d8313f1d04403da9eb60a1fc22. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QM4DW1855363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79963824159cf3de03d31541656f4e974562f220c1e1677dd40883404a9575c0. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T06:54:36Z), 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/QM4DW1855366.
Que Chulos Ojos y Ojitos Verdes - En vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b3963feb3d7a77eba5a2085b4ee7717e7acf223ceea3736ddc8163c950fd28. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:26:37Z), 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/QM4DW1855368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd391173b7c9be38d13666c492b8147edde88f0520b92895b062366a24d0fcf. 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/QZB4J1851049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6337c530474ca104c229ee1b8e327af072f1546950e1fb235a54e13fd1ee417. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHN52119199.
En Vivo Desde El Rancho, Vol. 1 (En vivo)
Ponchito El De La Lima / El Guero Colorado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410ca66db8b97c36b90f59dadf4867b0f8b6ef7543d3f9d0b2a1b031d26cfeda. 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/QZTAY2409866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ba9cf162c26408f99981d3d4b392542dec7e82525c172789affd7205302cea. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZHN42564622.