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 0x33deb454a57f6cdc6c7750b34f865b2aa55a054d0895867fbcf5db51d46932ec. 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/5fa80d76-148d-4135-a6ab-c03af5301b14.json and https://artists.proofprofile.net/proofs/artist/5fa80d76-148d-4135-a6ab-c03af5301b14.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 0x7009a0505ee6b626ad2e9deb5277fc498c7e6707c56bf200641bae779333343e. 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/QZK6G2038733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e0d561664944df1def7a16d84d8febc07d0810e7228bbb1ff7bc02d41783ec. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNWT2085709.
Policía De Investigación (Ciudad De México)
Injusticia En Veracruz (Policías Detenidos)
Elemento Clon (Policia Estatal Veracruz)
Comandante Brujo (Guardia Civil Michoacán)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408f1ee211fedc4353cce82df4d1779bc18d5eb88b2f3fcc9cfb497a52e1affe. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZES62306923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf98143cdb44964a0812e837866d199617e0933686939524db2ddd832a507866. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:33:44Z), 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/QZES62398187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577748181c8b8e10fe86f4d460e6617bd81c356ece660fbe2b9c8f44d6ee1a5f. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZRP42393283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d041f5994d705d52920849f726bbfeffac399d21a52ac71230cbee4063c7d9. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZPLS2476361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e99083227b6fd6369909f31411e75b10c2d11a4ba6c3659a612bd629862eb8a. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZWFQ2428100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155ed1df1df7f2aa486d9eed1bdac7ed57305050379b87828e082b6ae5d4bad9. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:33:03Z), 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/QZZ762435484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16eddabbf3382ad0682aebdad573bc9c40a54805c211bd5890c30c89c0c21785. 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/QZZ762437628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ae4da6a128e44f57eb95a88f7c77068c17eb33c6bd81ba6470b08e29bbdee0. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZZ7Q2441098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8d79b754b011b775c16b69a084e85621cddfdee38afe4c9497edab1e60594c. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZDA42589800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e307d3e362e1ca1e98bf17f80a59dabcc6966660742492c10b49469716f1908. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QZES62559872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c75f0c4e1b7b6744d8870305ece5d644e69b7bc7dfc20d6b74c5eead73c53d. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZHN52598530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc082c297024d60ece85a0be8c5e27248fbfb622457928c921fe2da1484fffd. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZWFE2567048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec050c29a36023df36ce61dcde3a444196b0bf1f48d77fd5ae4749baa3dc974. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZWFE2567051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df6633697b198ca74d2ee8d39ead1c18369e18261531e06a60469dfc3bbc569. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZZ7X2568314.