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 0x16e6592f2b8f5f6497215f6dff8bc40d094dfd1dd6f429ed1f1fe015235ff931. 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/9f390d82-437f-44a1-bc4f-1ec2e6777a04.json and https://artists.proofprofile.net/proofs/artist/9f390d82-437f-44a1-bc4f-1ec2e6777a04.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 0xe70fc36a5589ccc55b8e52721bb1d5ceb49e4bbbe2ec78ffdf5f43cf76be29db. 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/6n6LiVPbgZ9amM6KktnuwU.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/6n6LiVPbgZ9amM6KktnuwU.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde438a8756e9df73bc6a2e76ea83a085caac6ef36ffb98e70d9683869cc81f1d. 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/5wLW1M4RAa8QIDFKoTNEYs.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/5wLW1M4RAa8QIDFKoTNEYs.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0947ffc311ae04905ed38d8ec2e6ce04be8dc6f0ab0633c536a49aa031e013. 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/79hnHzY7yX3Geb5rdeXCPf.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/79hnHzY7yX3Geb5rdeXCPf.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b8410d57febd7c93df7cbc88a7d814b7d3ce3a49e49b58b335c09da4ed75d9. 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/0u5l3Tbioca2S5ed4t2DBw.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/0u5l3Tbioca2S5ed4t2DBw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6e62910be27fe573e647fcbeeb09250a3b6cae55e5d8f7853241537f4f42a8. 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/6C6seqtTRbPYLmraz4o8rM.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/6C6seqtTRbPYLmraz4o8rM.
{"copyright_id":"0x084bbf61700b73858a74fabcfdc3e37e7183b9ee318c4a27ec4ce697fde176f7","isrc":"PL2DY2301264","name":"Members Only Cypher","registered_at":"2026-06-05T07:29:37Z","spotify_id":"25pFooAs8Xsd2JP1Z4Z6MM","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084bbf61700b73858a74fabcfdc3e37e7183b9ee318c4a27ec4ce697fde176f7. 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/25pFooAs8Xsd2JP1Z4Z6MM.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/25pFooAs8Xsd2JP1Z4Z6MM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde348f568b0e545f10a44a7f0df148e5bfeb0e1a206ef2765141a30ea1278849. 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/5myb8e7sCcBBmna1sXoDHu.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/5myb8e7sCcBBmna1sXoDHu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d24a88c167b618dfdbde61ef0f25d886cef1fded4c86e2527c58f11068001cf. 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/0rG2noX7vam96QHgm8vwB6.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/0rG2noX7vam96QHgm8vwB6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6394f6ed81a215a7592cd66595619cbe42469b2369554196cbd16a19fb3ab74. 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/6SLT1sCiF72nQksK5HC8tv.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/6SLT1sCiF72nQksK5HC8tv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6394f6ed81a215a7592cd66595619cbe42469b2369554196cbd16a19fb3ab74. 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/1hGIXAcFBQoew1R2Qh41Mk.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/1hGIXAcFBQoew1R2Qh41Mk.
{"copyright_id":"0x8fc5f55d0c25a18ed66e0cacab64f819e6b018acf47a50c6dbb44b9abc234613","isrc":"PLA552500127","name":"FENOMENALNY STYL","registered_at":"2026-06-01T12:21:01Z","spotify_id":"5C8tZd79j0W7MnUXZrjlgm","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc5f55d0c25a18ed66e0cacab64f819e6b018acf47a50c6dbb44b9abc234613. 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/5C8tZd79j0W7MnUXZrjlgm.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/5C8tZd79j0W7MnUXZrjlgm.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6394f6ed81a215a7592cd66595619cbe42469b2369554196cbd16a19fb3ab74. 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/1NuNJSLxt0I2Gx3avnMHSv.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/1NuNJSLxt0I2Gx3avnMHSv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6394f6ed81a215a7592cd66595619cbe42469b2369554196cbd16a19fb3ab74. 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/4XdeMvXJ6hg3aQDpuEfYi1.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/4XdeMvXJ6hg3aQDpuEfYi1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aac489635cc80122d8ccc67172484ba264d87c3db85f255febe7586d7ec6cd4. 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/3TScSLjH6uzYm8NXphZJCX.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/3TScSLjH6uzYm8NXphZJCX.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380221aa7228c9bbd3e9b0483b688100bc3376bee8b0840ab2ee8095d1363bc5. 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/3Y01BF7oYxqZERc9f1E44M.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/3Y01BF7oYxqZERc9f1E44M.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854b14d28b96892f85b89e40de23647229ee958766b2aabcc520d31b12b95f5a. 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/25RQkSvqVd0c16ZRvZr4BP.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/25RQkSvqVd0c16ZRvZr4BP.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da27263a0a42f6475e2e09c9f5ea532c22d7858a430dbf29db152a17fabfde6. 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/3QAO5IGi0SF08aYZaM9gbc.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/3QAO5IGi0SF08aYZaM9gbc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30195cbead469237bbad7515d0db3730e008633e1823cfe8b33ecf432824914c. 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/6mpfNKkRDf1qN5z88rklXs.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/6mpfNKkRDf1qN5z88rklXs.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7643ccd6d2581b40387afb94900a16abd7df499ecd70ca2f1c47048149c82a10. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T20:37:42Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1L4rnHWQUeNoOBVuBiBXkm.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/1L4rnHWQUeNoOBVuBiBXkm.