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 0xf522bc14a20e38b6fccb49fce1f86266d0362c53d8c206907c38216c9b8e90d7. Chain 2 (Bitcoin): anchored in block 953765 (2026-06-15T08:55:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bc0ee464-c559-47a0-890e-45bc6b1ce893.json and https://artists.proofprofile.net/proofs/artist/bc0ee464-c559-47a0-890e-45bc6b1ce893.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 0x66072a3155d3dd9d258b098f477b6ed47ac084804bfffa0f75c5ca6bbfe5422f. 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/QZNJW2170020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a5f44b066dcbc804b86818a79017805dabc70af27bfaa5ef80df406fded1c9. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZNJW2170021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fcc563de94b6df2ed4eb411858079420b245dbe8e6e3f52b5ca0e61022c7aab. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZNJV2194845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b4d0ed10e3d7855350f734265b4c883ac7b58035f02b3dee3adcc74b69a88a. 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/QZNJW2170022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3bade2146bdbf3035d871cb43dbfd2a1eed7162fac7070657818498b8b1c40a. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZNJW2170023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6597f62262b4b9eca03a0e9558fc7bbaa967e13551f5b1b7c270ab7c8efb7fa. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:52:40Z), 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/QZNJW2170024.
El Chico del Apartamento 512 / Amor Prohibido / Techno Cumbia - Cover
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850ebdd5f131dd573ced7853f14051b59ec9711a6840d601ec9c588b1a85b765. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZNJW2170025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5403586f6cbc425244b7ec0fa1089f674e80dabdc8d4e819cfc32d26727294e9. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:38:24Z), 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/QZNJW2170026.
La Falda Cortita / La Cumbia del Río / El Sonidito / El Coco No / No Bailes de Caballito / La Bota - Cover
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab594d58c790ae591479e01d097b44ba5796462a96fde9256ddd25a2c2ed8a11. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/QZNJW2170027.