1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x2a95526f363b71a222d521b1f1afaf93332b461416f3f57a4205fb7d181ffcd7. 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/f6341d03-55ef-47b6-b610-116fe1a951c6.json and https://artists.proofprofile.net/proofs/artist/f6341d03-55ef-47b6-b610-116fe1a951c6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
B22 (feat. Liwen Sky) [Freestyle Playzer]
B22 (feat. Liwen Sky) - Freestyle Playzer
{"copyright_id":"0xa6379047fabc44ac094fb5709b1c7b4868ab1c88d6a48bce62f41ebfb947a0fc","isrc":"FRX452290069","name":"Petit Prince","registered_at":"2026-06-29T06:23:21Z","spotify_id":"4JHjIkRoZBM0Af69WNaFJJ","type":"track"}
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6379047fabc44ac094fb5709b1c7b4868ab1c88d6a48bce62f41ebfb947a0fc. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4JHjIkRoZBM0Af69WNaFJJ.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4JHjIkRoZBM0Af69WNaFJJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210221904be672bf43bfe26af3139728744b62c84b2749c47acfb822a27b99ec. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2r0m96LddRUfSkGZddzzU7.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2r0m96LddRUfSkGZddzzU7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e164ff4882b886459ba254917671c0386c157a23694d7de8dddc618cf5a3e69. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6U1OxECwYYI4raSTSi2Rvi.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6U1OxECwYYI4raSTSi2Rvi.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef22df00963e982d68fd31bd1455ed28f9f9e3ad868ad25889f84c1be41cfd6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7p1wvDYc7S8CmTaE3HeoLc.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7p1wvDYc7S8CmTaE3HeoLc.