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 0xa332801a7e36e45bbc42171c4053315f3da6ffc427a48dc82d35fa5446391e5c. 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/d733b036-54cb-49df-bd75-ba9a6ca57b4b.json and https://artists.proofprofile.net/proofs/artist/d733b036-54cb-49df-bd75-ba9a6ca57b4b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x35e404a74e1b055f18c34d2571bbc2045d4801b697c0e44e2906f94388e7370f. 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/1enHdyxv9ytIbmL4BCPEM4.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/1enHdyxv9ytIbmL4BCPEM4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x683ed73360ecc1261e951e901c656a6d7b92b15c0154da07ac1333482f35c18a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1jAn38lh95h1IOJRHSntC7.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/1jAn38lh95h1IOJRHSntC7.
{"copyright_id":"0x9c12dd937052bb796425cf9cf51a6a7b1ca5407c19f4b1ac258fbf0c53ed5f8c","isrc":"QZTBA2307801","name":"TRES TRISTES TIGRES","registered_at":"2026-06-08T15:26:50Z","spotify_id":"4omP6j92so6mFs7KiVJZpZ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c12dd937052bb796425cf9cf51a6a7b1ca5407c19f4b1ac258fbf0c53ed5f8c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4omP6j92so6mFs7KiVJZpZ.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/4omP6j92so6mFs7KiVJZpZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a34ddea6126f53d786cfbc5fed091fba4c85d294283ed6c56da8499a84fae1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/49MjWIqtpeaxbdaZjtZRyq.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/49MjWIqtpeaxbdaZjtZRyq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7194692a321fa5ea7402648e3b522b6a973536107caf26e0a00ddfdb09ec78fe. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1rM9VvWIADooX2YqTfFlCD.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/1rM9VvWIADooX2YqTfFlCD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7194692a321fa5ea7402648e3b522b6a973536107caf26e0a00ddfdb09ec78fe. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2yJ3WEEfNfhI5wmgliXXCf.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/2yJ3WEEfNfhI5wmgliXXCf.