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 0x66d1828880506750bbdc0140ede700339df7462e4ddcf427286fa8c24c4fe631. 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/95b2cc04-4a05-4735-b3d1-746df65fd0e2.json and https://artists.proofprofile.net/proofs/artist/95b2cc04-4a05-4735-b3d1-746df65fd0e2.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 0x637572d9fba15021b2f615c09300ab7edea6fe015ad75887a824156c5ef1a0eb. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7mV5nQ6I3J06FowOgrn0ty.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/7mV5nQ6I3J06FowOgrn0ty.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed553a51d46edf6d192b3599851989fd685da6fd272d8a0b5e2381d742e9add. 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/07wHY9wr8EQa28UXrdt2UJ.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/07wHY9wr8EQa28UXrdt2UJ.
{"copyright_id":"0x14b19f0d0e8cd7f1bc8231fbf589fce348308a19ceb9c871ae1ffe4c42b2ab71","isrc":"CH7812191993","name":"Nique la police","registered_at":"2026-06-08T06:39:36Z","spotify_id":"6if7EJEaqJkUYcgV5nrqyw","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b19f0d0e8cd7f1bc8231fbf589fce348308a19ceb9c871ae1ffe4c42b2ab71. 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/6if7EJEaqJkUYcgV5nrqyw.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/6if7EJEaqJkUYcgV5nrqyw.
{"copyright_id":"0x6bb05136df17f38bedeefb58cc4fd07ddb346694195a44afe3b2aff8ff37276b","isrc":"CH7812191994","name":"Lohn und Spott","registered_at":"2026-06-26T03:44:31Z","spotify_id":"1DYnUax0DemhirIchEDLeW","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb05136df17f38bedeefb58cc4fd07ddb346694195a44afe3b2aff8ff37276b. 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/1DYnUax0DemhirIchEDLeW.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/1DYnUax0DemhirIchEDLeW.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9bcc83eed5da089b1451ee476c7bf79401ce69d1a75fd5e70ab0a88a62bf3c. 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/7sphhuBmTpdaxD7usxP7HG.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/7sphhuBmTpdaxD7usxP7HG.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637572d9fba15021b2f615c09300ab7edea6fe015ad75887a824156c5ef1a0eb. 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/6vcvP7WGFsLYKJ7N0farsQ.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/6vcvP7WGFsLYKJ7N0farsQ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5d46d06e8107ecbc4614619050c1f816d29f4a8c9cf9a1d71796f36d0b0d33. 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/5ALKRzHLi4pndbix8o8SuZ.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/5ALKRzHLi4pndbix8o8SuZ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100c8f5bdf4fe2ffffe9ea35852a99c819a51a2e30055463d49039afcc0bc963. 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/3DsHdEav8bVYsDgxWHt8aJ.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/3DsHdEav8bVYsDgxWHt8aJ.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641ea1c1be66ab280208c5f3f99f1059281ffeee362894978c2f24df28d2d370. 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/1ggZp78WhlreIJ2gQJuF5Q.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/1ggZp78WhlreIJ2gQJuF5Q.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b23a67c50789a27c12ceccbab80a04aef8a4e89e1b818689065f9ab75b2351e. 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/22GfubCUbrJdObtmC5qTZ5.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/22GfubCUbrJdObtmC5qTZ5.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3374c79d5161af1e9d64a11137680e8f175f6e7a649d098d26f4a56fab8a1d. 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/3kW0P4yBjcLKO6Tt4TzMxq.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/3kW0P4yBjcLKO6Tt4TzMxq.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec74c4fac48d168bfeb4e1cf55377f95e5f0df24d98db4ec6c295c8a6d5ce71. 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/5BIoyaUDzw9I78hXPN4aoK.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/5BIoyaUDzw9I78hXPN4aoK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292e088b4421b3e9489921b37eef26f6f2c99e22ed7295791d1253ba8112142c. 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/6HVhAdD1wkzP2P2rDjIYQ0.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/6HVhAdD1wkzP2P2rDjIYQ0.