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 0x0a4665247c1cbb0b39dee3f35df4951da71c3e55a5d0da0ea8b506d9dc6e3f08. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9d45308e-3d59-4abe-8312-1f2e0686b619.json and https://artists.proofprofile.net/proofs/artist/9d45308e-3d59-4abe-8312-1f2e0686b619.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 0x47ebd35f1c5bdcb5a40155c507444db5a54cff304b7dbd69244a422e9c6140bd. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TCJPJ1922796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2d7f7c047af534f967dcbcfcddae6882afcabcd5c712641c745e852bdcdc13. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCJPK1918215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b07dc26a6a16868da893beba2f442275c058a409d7dd36ed8661a79cf7923b8. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:21:39Z), 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/TCJPK2073832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee44ad6f1116678af60d42e172a850469f86c096583f4e5a2cd61437c519f2f. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/JPPO02400930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bbb523ccc05a6f442866c665cbfbb9251bf31745ba6b3cc18e6a53d76291486. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/JPPO02400932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf080557d70a3b07165bf45d9758ac6950b3d5d7b8c82842bae7f59baa7094265. 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/JPPO02400933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84904a3cc72e17c96a10b04a6006782a64a548d262112b1eae14849b0f951c9. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JPPO02400938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce56c61eef29e1184642f1dd5606734df39c59202b00875fc2958f0b6bd39215. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/JPPO02405309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4f5ea77e4c32797c81ae80ade00294ebcbbbc5f09e3e3d65f68c72f619b414. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/JPPO02501085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4f5ea77e4c32797c81ae80ade00294ebcbbbc5f09e3e3d65f68c72f619b414. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/JPPO02501085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe757c480713740f9543ef29ebc69402460be5ce93d9e0644a083b6be03c19d27. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/JPPO02501169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e2bbd5865a5726ca7d22c984e278eeb867ff0fed452924edfed53ff8a959b8. 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/JPPO02501170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a4e248b91badf58dcf4ec8a249567fa475f3a5b07953b7b766d2fb08946772. 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/JPPO02501171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8e556e0d9fdf96653cd0f0a4b432ee362011b8081dd9b8898cdf99b4141b9c. 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/JPPO02501172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196c607d54da73ba5bf6d1387deaa0798c089aedb7ceea979b40fc4d700bfdfb. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/JPPO02501174.