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 0xf5e5ded27017d4215537170b8ce19156046d1662be51766f62c14fb2ea0c445e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/56e20e56-49de-4879-9d18-5e9a77030607.json and https://artists.proofprofile.net/proofs/artist/56e20e56-49de-4879-9d18-5e9a77030607.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 0x5a2e3971be16741d91303e3e3525eca75d9308649566b8d54cf03f6c8cbb5465. 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/7qUBZ9IP7KtqMXy22iESrR.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/7qUBZ9IP7KtqMXy22iESrR.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070f2639ae69f8d6460a4374365725dbad92c7f14e5ad437c6081f31234f7b06. 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/2JhcDJFVkMS9fxEuCAgIYb.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/2JhcDJFVkMS9fxEuCAgIYb.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6399d8bfd508d5b78b67709d1838652a198c3eaa213804bf263bce7dab98839d. 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/4Nzzznp5nk5NGcaS89yvbz.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/4Nzzznp5nk5NGcaS89yvbz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65f972a7ba45800bfd7dcd3108be15f227063877f0feacf26e0beafedf8fc8f. 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/1o4xkdBe0RjSf2u6VXi4OI.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/1o4xkdBe0RjSf2u6VXi4OI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf70250c22876ae4ea77e48ace34ce147ce16a17e05bc084e92dc7967a584fad. 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/1T7dnzqt20Ueir9mPv8K6J.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/1T7dnzqt20Ueir9mPv8K6J.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47aba024ec4f3c9951f35955af8c37a4a8095e1a4356981fc0ada69887075813. 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/7zYsVejuPDQMWYzVYrM7xT.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/7zYsVejuPDQMWYzVYrM7xT.
{"copyright_id":"0xf120831bb34b66eab28f3ed3c83f7a3e56a047f276f2b4627fec73a5ac5a3da9","isrc":"QMDA72337291","name":"FULE T","registered_at":"2026-06-05T04:58:11Z","spotify_id":"2InJKIdaqmdfCOWqsyr32o","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf120831bb34b66eab28f3ed3c83f7a3e56a047f276f2b4627fec73a5ac5a3da9. 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/2InJKIdaqmdfCOWqsyr32o.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/2InJKIdaqmdfCOWqsyr32o.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246b52b84ac8f04e3b0a758b6aa4b34a6b7a0e55d25832c44a2d2f77ccf00a96. 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/65jYGXtL7j5wJgnb293iZI.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/65jYGXtL7j5wJgnb293iZI.
{"copyright_id":"0x246b52b84ac8f04e3b0a758b6aa4b34a6b7a0e55d25832c44a2d2f77ccf00a96","isrc":"QMFMG2375967","name":"Dejame Saber","registered_at":"2026-06-04T08:18:12Z","spotify_id":"7Djet6Q24R8EtzzBdPcmiA","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246b52b84ac8f04e3b0a758b6aa4b34a6b7a0e55d25832c44a2d2f77ccf00a96. 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/7Djet6Q24R8EtzzBdPcmiA.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/7Djet6Q24R8EtzzBdPcmiA.
{"copyright_id":"0x55c1e43c51682db1f50494695f8ebf55581489eeb1f97e35b32a36fb54a2b49d","isrc":"QZMEV2511619","name":"SOUTH BEACH","registered_at":"2026-06-11T02:19:51Z","spotify_id":"2woLNUNVgfwTGxdVeUfpTM","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c1e43c51682db1f50494695f8ebf55581489eeb1f97e35b32a36fb54a2b49d. 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/2woLNUNVgfwTGxdVeUfpTM.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/2woLNUNVgfwTGxdVeUfpTM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0bd4cee92c2b30768a9d5d183515ee070fef7af888a6bda8d4482ea8615ab3. 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/46tc0uATrRe3irrFDiw12r.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/46tc0uATrRe3irrFDiw12r.