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 0xa3213805950d32c3368e3af001514134e5099fc2e1ff5bd86dc63ebd54e3e6cc. 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/518184fb-ad64-4db3-9fbe-7abba56c487d.json and https://artists.proofprofile.net/proofs/artist/518184fb-ad64-4db3-9fbe-7abba56c487d.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 0x1cedcd966d177d99f0d14c222a29de0846ba45b98bdffdf7a26abb0dfdb61acf. 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/QZDQH2358492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3e3b6be606e8599ad0c6a9f4d6502ffebec8ee5bf2390672a7df8edcd4afb0. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZDQH2358496.
El señor de la entrevista (ismael "mayo" zambada) [En vivo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d5f5ccc12b3e8dc8ffc6a07fdf4fa411bd88f5186ad4d0332a0b42d896560b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZDQH2386353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe55527fb937fd31bf6c80cad1e559bbcffc3432d86722ca8f92d8946e27205. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZDQH2386360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2ca185b8f118fc30284b82499efbbdf4d3b1353a06f4c93974c187e939631a. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:41:07Z), 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/QZDQH2386361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b36c570999c0e9d6797c7c2e9bce2a521f9b993ec4171dfc7b473d37159e13d. 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/QZDQH2389040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd22b9d8e50748611409d078bfbb6700ac0ac19fd1b4df395d9874d91b931d5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZDQH2423555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4590fbb950860bbd65c1b8f84a63aee82ad85f85db34729b3dec0836f57436f8. 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/QZDQH2423556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad6419e02f3530d90563e5f4f220b0372d4ec90b068e7ece92fd00262c02b0b1. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZDQH2503133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c79ee0cdb6e35670eea0000a181b55e38bee40de5f2313a5257015548db6f0. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:55:43Z), 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/QZDQH2503134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84371333334690547cc7e16ab5bd5be6393437f811849dcf58b8789639527745. 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/QZDQH2503135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8250b28e627f3cd631bc3d1ae3a02b28991ba3da9dd605b6f516189340fcdb27. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZDQH2503136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583de25583a36631e5685cb150f666bdad6bc86c459b74e8ad188b63604e4b27. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZDQH2503137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0b27e3fb798e8bd1588b0031cefaee13e4c8701bcee6286220628f841f35d2. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZDQH2519801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1d75c0b7b243bb70cbed0bf56afd65aa083a09a51f537b86795d1225eda541. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZDQH2519804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1a8b4dc68bbd5ff28197a91a13dae7a792116742a2a891c09e131a1251644a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZS7J2286908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5419916a6c4a754fe4048912ee688489bb7d1ed1a0ee4d04f4a85481bde93ca0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM3DF2299228.