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 0x17e3546d24f92dd31471ea04e1f0b1d0169762df475a35c7d80ae2e5a52cc163. 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/8bc0b4ce-18a5-44fa-8720-09f327a68b6b.json and https://artists.proofprofile.net/proofs/artist/8bc0b4ce-18a5-44fa-8720-09f327a68b6b.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 0x7be3c9def45cb673dc53cb1c1813ab76b72ace832293490039c6ecca7d993173. 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/0f6pJnpt1sP5PN6WJVVjLa.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/0f6pJnpt1sP5PN6WJVVjLa.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4947929f4acc07189a765900f25f92ca00d413b1e8e2f6fc9c2f6d776e23758. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3rlKjtGasoVKRCcZCh84Fy.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/3rlKjtGasoVKRCcZCh84Fy.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe307c73f42996623bb941fb44a2ff685852780557b53a5c690c652f6376b32ef. 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/0ZzbFh1ew6Z6TalrwuuGf8.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/0ZzbFh1ew6Z6TalrwuuGf8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ffadf55d01613b80d0409fedc9d5dc85ca31025bcf8426564fa7614cff5d60. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4b3OFRqf4IcxIyJ4xKDHpq.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/4b3OFRqf4IcxIyJ4xKDHpq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4e98984027249a5747698c4b8962e0cdff3f879bd9cf1840fe38841231ad35. 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/3rNWHEpPK22ZrTe3BJ0bSi.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/3rNWHEpPK22ZrTe3BJ0bSi.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ed5bcd86e102506b0a45a1e6582e5fb7dbea3fab934649d9fa2c17b7ec3a3c. 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/0aMG8kFPeSuzKm3wFiXHaq.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/0aMG8kFPeSuzKm3wFiXHaq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa370927556120c7fb701dddfe77615863beb6475f3fca25e863d31ed14972302. 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/7gYSfHGW4TOh9jSLD58k0A.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/7gYSfHGW4TOh9jSLD58k0A.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d50473fdd40c307f39e768fbed2a5063068b0223bb2d9a42eb0f6878f622dde. 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/4QwzG3LgtO1KhAbRbXg4lA.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/4QwzG3LgtO1KhAbRbXg4lA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a09250526b9d18823cb86aba4eed9e956695bd12a40e49a68721bf45cd5fdaf. 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/58YeCqKokg4XsruA7IFDts.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/58YeCqKokg4XsruA7IFDts.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f4a79e8579a1dcc2150403e8427fe720e8def131b16d2724d57fa5d5bd8e7a. 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/3W9n2MpiKJKEQyxWDezU1Z.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/3W9n2MpiKJKEQyxWDezU1Z.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48ad9443875eaaf1176caaa3ea3b2dab36b0703c504d1f184f3114f8d16eff9. 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/4qQEdhpaLtFQ8DSERFzFa6.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/4qQEdhpaLtFQ8DSERFzFa6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620e92769c1348462bc8985985485db0ad6d9e48106c80cd463fef19c149714f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0ZnLXkqI9bFUtxC3EhBbu6.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/0ZnLXkqI9bFUtxC3EhBbu6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962857318b0c680902134fa926719db23340aa8e4fb40df31dbb7b27d2b3a740. 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/0emJ7JpnRHXfEPlDv2PkEl.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/0emJ7JpnRHXfEPlDv2PkEl.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75fb680cc8995524f98718999263a696b0781fd5cd9fa1741e99cc6e46c6fc7d. 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/1ADBZ8P1DjsxECIk5WhREP.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/1ADBZ8P1DjsxECIk5WhREP.