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 0x08529181a97627618372e4a99023567d356d6d5fc1b4fd890f8bfbedacf379f6. 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/bef4aa58-546e-4c4e-a0cc-21a30010a2cf.json and https://artists.proofprofile.net/proofs/artist/bef4aa58-546e-4c4e-a0cc-21a30010a2cf.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 0x519666c718852203b7590e515da59f4907563a3c98e86f66525b78d927f68b33. 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/2aZSrzwEIysdHOMQxiiDdE.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/2aZSrzwEIysdHOMQxiiDdE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb436ddb6bd45b8541f2e6a5830ebe7fdb712c00b0d54820e173c7b691fc06c14. 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/6Q4jKRXXFDEjpJ924OIE4l.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/6Q4jKRXXFDEjpJ924OIE4l.
Waar ben je heengegaan? (Duet met jan Verhoeven)
Kom pluk de dag met mij. (Duet met Bobby Prins)
{"copyright_id":"0x846fc99502714da8bbf55ce8a8caad7a4fa9aa2186b472ba68241c5a62eadfad","isrc":"FR6V81623972","name":"Ti amo","registered_at":"2026-06-29T05:55:45Z","spotify_id":"0TbOf42idCotfNvJrphhI0","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846fc99502714da8bbf55ce8a8caad7a4fa9aa2186b472ba68241c5a62eadfad. 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/0TbOf42idCotfNvJrphhI0.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/0TbOf42idCotfNvJrphhI0.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac539c5834e66a48096b39e66b47368f8a8a252e22138f85aec9c54b9f305ab. 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/6rxG54lzrle9ZTEgSQ8shK.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/6rxG54lzrle9ZTEgSQ8shK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd93c8bee4ef5f1280e500e170fb264d69ed003c68af6f48acd0f331345fe29a5. 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/05T115fWtlTCrNRIN3u0EQ.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/05T115fWtlTCrNRIN3u0EQ.
{"copyright_id":"0x6f72d41b5375593abb5f2db4e5cfc72240977ab21c24d072dacc7c4f12cb87c8","isrc":"QM6P42169868","name":"Me Llaman Loco","registered_at":"2026-06-04T07:38:07Z","spotify_id":"4rxMPIs2BUJTs6UVjbJBqd","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f72d41b5375593abb5f2db4e5cfc72240977ab21c24d072dacc7c4f12cb87c8. 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/4rxMPIs2BUJTs6UVjbJBqd.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/4rxMPIs2BUJTs6UVjbJBqd.