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 0x382b1085d0594b216c30dde427ffa7e602fdf6dc32175dba9e153f2869f9a262. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5ff08ef1-7f14-4ac0-9ce9-c64720b17b3b.json and https://artists.proofprofile.net/proofs/artist/5ff08ef1-7f14-4ac0-9ce9-c64720b17b3b.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 0xa8699bd2fdf51500c418bc72f413b1ece1560f7a477e1d445a82369ab50b044a. 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/1Z6QyJYHKQg9iFN5IUIExI.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/1Z6QyJYHKQg9iFN5IUIExI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8daddfbbdebe11a45b78f354dcc46d9d079335727a59cb3aa4950a83dcc28b20. 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/4Cb0Tbi3cnasAwREdY8w08.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/4Cb0Tbi3cnasAwREdY8w08.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabcfee07fb457c62209a232d82a08c6de651688c626c9e78a791176072999694. 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/39Tr7COo9VPfV8jKdxWkyK.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/39Tr7COo9VPfV8jKdxWkyK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39378ab8aa538c6565d7fb66c776bcdf1fb19a56f799a668ec71ca5dcf55881. 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/22YGteuLhbgBmpviwSREJZ.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/22YGteuLhbgBmpviwSREJZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadad68ae43521d1c0328ca82be7c1bc14760f15d1e7b5b6fa17c25821afbac4c. 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/5QPJawyVLtFeGwMyTv7T14.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/5QPJawyVLtFeGwMyTv7T14.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1219c7d37d81ce0686a9821e6ee9b5f377abf9ba539d9936e6b3e1e2a672b879. 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/2kpw8PR3pjFbpyvAnH7jtA.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/2kpw8PR3pjFbpyvAnH7jtA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabcfee07fb457c62209a232d82a08c6de651688c626c9e78a791176072999694. 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/6cNYMR00j2fVeNi0odq0vF.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/6cNYMR00j2fVeNi0odq0vF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8745115215fed2952682e0e1d52b04b7145a15f591a67a88de289597a7e11393. 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/52RQPewrSQvhzm1xktizgQ.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/52RQPewrSQvhzm1xktizgQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b1f58cb4d9a2826761682a78b28801746b001f5869de73a182f20f63579bae. 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/6wvtvXFQxaWOU2ovposlOa.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/6wvtvXFQxaWOU2ovposlOa.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26557f53d2811501acec229abe58b1f3b217e8260dc8bfd04b40c9fdefa6d142. 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/7GIiteh7NZJXUDBNhEXYDr.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/7GIiteh7NZJXUDBNhEXYDr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e958aa9225192ad15bd0b84aa365df32021de443bfecb8d86f7bd271e4060b8. 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/0ZgLNQ9f4sPmhBB8yuNAK0.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/0ZgLNQ9f4sPmhBB8yuNAK0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbaaa4a04274097f1253b117711662c4ee326a845934dee7c961b27bfa8278f. 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/6dbym4LCy9AawzapgtTAL1.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/6dbym4LCy9AawzapgtTAL1.
{"copyright_id":"0x8a0b0febe8135b5ed15abe850368db48e55ba2269124a8bde8100abde272f1ac","isrc":"QMFMG2314985","name":"MELONI COCÓ FIAH 140 BPM","registered_at":"2026-06-21T22:32:52Z","spotify_id":"5YbYjUM2b4KNoV87E93s9g","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0b0febe8135b5ed15abe850368db48e55ba2269124a8bde8100abde272f1ac. 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/5YbYjUM2b4KNoV87E93s9g.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/5YbYjUM2b4KNoV87E93s9g.