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 0x10cb17e1c08201c86625d0c5b0275923f5fe686e98fb4d7d458b3bf015222264. 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/a704c868-916b-4405-917e-c181ad78f86a.json and https://artists.proofprofile.net/proofs/artist/a704c868-916b-4405-917e-c181ad78f86a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Echoes of Women - International Women's Day 2024
{"copyright_id":"0xf91ff38d5a658ce6022eaaa7523162c79825d800012783a27498e6f8942d0d1d","isrc":"DEN962102900","name":"White Flowers Take Their Bath","registered_at":"2026-06-09T15:42:27Z","spotify_id":"5noOiloFrEgff2DTdGaOwm","type":"track"}
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 0xf91ff38d5a658ce6022eaaa7523162c79825d800012783a27498e6f8942d0d1d. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5noOiloFrEgff2DTdGaOwm.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/5noOiloFrEgff2DTdGaOwm.
{"copyright_id":"0xf91ff38d5a658ce6022eaaa7523162c79825d800012783a27498e6f8942d0d1d","isrc":"DEN962102900","name":"White Flowers Take Their Bath","registered_at":"2026-06-09T15:42:27Z","spotify_id":"0n3HaBsGQ1LwtFMpfOqAWI","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91ff38d5a658ce6022eaaa7523162c79825d800012783a27498e6f8942d0d1d. 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/0n3HaBsGQ1LwtFMpfOqAWI.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/0n3HaBsGQ1LwtFMpfOqAWI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58133223354f12ae26c60826ec6031b2837d79895915ce7311563fe3c8e88f5e. 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/70s4Hxnj4k2FlBkguw0ANT.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/70s4Hxnj4k2FlBkguw0ANT.