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 0x3a1918c09540b8a317ac3d4db121178e01dbbfee780b794305daf6acfcbba07a. 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/cb7d3a96-6ce9-4552-b3d2-d0ff1f0a1ec7.json and https://artists.proofprofile.net/proofs/artist/cb7d3a96-6ce9-4552-b3d2-d0ff1f0a1ec7.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 0x8ad93172218ffa3f01d7e4d22388b74ec5c0a7e0a4273b21c5a44eb54d7bde69. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2Rxl25jSDUe0yHS2OjOvTE.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/2Rxl25jSDUe0yHS2OjOvTE.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc672b199bea6c808dc6a23d8ec7f21f10a2a1fb423290941363967b9490140df. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5xtdTOlw7QSeqPZheMBumH.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/5xtdTOlw7QSeqPZheMBumH.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9884363992840712c9d4423444fbf37b02ac78c1dd23ec93159ae66134bb1fa. 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/4Tgy1AMHyyq6b2ys4Y6J0X.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/4Tgy1AMHyyq6b2ys4Y6J0X.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d32875b037f0faf225fa514b41405f73fd42554b5faceb66846fe75704903e1. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0pJH7lmZNU2xeaCnoM2i2r.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/0pJH7lmZNU2xeaCnoM2i2r.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553dd5de259b859a2005b3d24fe9319463933a8f6ca136427322d00bb3042042. 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/3zNJB4p5O6v0I6ajWzzsAr.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/3zNJB4p5O6v0I6ajWzzsAr.