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 0x0810c1d3fec66537bd8678055a8f823cd299af0f217294b7f09e39bf51199944. 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/008072d4-c3a2-4e09-9804-32fb5a2803b7.json and https://artists.proofprofile.net/proofs/artist/008072d4-c3a2-4e09-9804-32fb5a2803b7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sinatra (feat. Opera Skaala & Adi L Hasla)
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 0x471329926d0119c03c570ddea074844aea218f69e16f03c3f59f8a2d450b9b21. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/63pMAq6pmYsgGWHkq8C0RU.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/63pMAq6pmYsgGWHkq8C0RU.
{"copyright_id":"0xff80d31df6595e7a16be72bf3a63a0b4b606077e96d4d3d25b7298d21d6efcdc","isrc":"FIS7H1800009","name":"Äiti & isä","registered_at":"2026-06-29T09:35:25Z","spotify_id":"6B3HbuKUbIjkEciho2GZUg","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff80d31df6595e7a16be72bf3a63a0b4b606077e96d4d3d25b7298d21d6efcdc. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6B3HbuKUbIjkEciho2GZUg.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/6B3HbuKUbIjkEciho2GZUg.
Kulissit kuntoon (feat. Pyhimys & Specks)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff80d31df6595e7a16be72bf3a63a0b4b606077e96d4d3d25b7298d21d6efcdc. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1BXjxW1FGJWk0Ze5Sc51sj.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/1BXjxW1FGJWk0Ze5Sc51sj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac710ceca2607ea59ae013f67e583317f8deb4180cd1ac06f47cce9f5401dae. 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/6WVeP76nOIPfbGN67aJ2Pq.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/6WVeP76nOIPfbGN67aJ2Pq.
{"copyright_id":"0x1470bf819d28172b95c1865b85c3d3b14e4cd53080e7eb3afcb9a04dce5ccc9a","isrc":"FIS7H2100006","name":"Sä oot ruma","registered_at":"2026-06-29T11:04:26Z","spotify_id":"5a4eox8HkKJouEHg5HfYEr","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1470bf819d28172b95c1865b85c3d3b14e4cd53080e7eb3afcb9a04dce5ccc9a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5a4eox8HkKJouEHg5HfYEr.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/5a4eox8HkKJouEHg5HfYEr.
Ei tää voi olla elämää (feat. pehmoaino)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023a466fa6d8dbf4d9bb5aa9736a5c352d9d56b46a1d60d17285c1924f3a09a5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6POu1TTSNPi6sqKpo1CeDm.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/6POu1TTSNPi6sqKpo1CeDm.
Kaipaan sua (feat. Boyat & Samuli Heimo)