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 0xac56099145569c2137d4c267f58ee6594970678ddf656a4b6790114a8f4da7fe. 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/de476949-c746-4397-be47-a15e3a527702.json and https://artists.proofprofile.net/proofs/artist/de476949-c746-4397-be47-a15e3a527702.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x1eb472149e1416af5cffa4e09652540dabc92f0924d57f747c8b20d001012ed7","isrc":"ATEF32200019","name":"Ich hab mir ne Rolex gecoppt","registered_at":"2026-06-24T13:47:28Z","spotify_id":"5FGIDgc2JSejPfZqQXNlBg","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 0x1eb472149e1416af5cffa4e09652540dabc92f0924d57f747c8b20d001012ed7. 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/5FGIDgc2JSejPfZqQXNlBg.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/5FGIDgc2JSejPfZqQXNlBg.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cff020959cec35b913185d65f9fa914bc18868da1c98365da917f46d7dfecb3. 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/2HiNXYTSs5P631griGO3gK.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/2HiNXYTSs5P631griGO3gK.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025c31b637c07d2e7f6494d3f290426b0662261770183c5c71bed2e46afd874f. 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/7jR0drOS0bU7I48AsJaAUO.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/7jR0drOS0bU7I48AsJaAUO.
{"copyright_id":"0x1f3df63d96fe93b85fea9967209f87dec91c5c04391ee24eb432478c29fd67da","isrc":"ATEF31900010","name":"Cream Soda","registered_at":"2026-06-21T18:13:40Z","spotify_id":"4SoFG9afkPFPOnHBcMBEyv","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3df63d96fe93b85fea9967209f87dec91c5c04391ee24eb432478c29fd67da. 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/4SoFG9afkPFPOnHBcMBEyv.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/4SoFG9afkPFPOnHBcMBEyv.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51cd351a3f914a13e2cd3d47aa6db894c67c118d4817d2710239d2211c37eec. 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/4HNarEJihBNKbeAC4wwz96.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/4HNarEJihBNKbeAC4wwz96.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78549db7df03b53ed1f4986576e59ad4afc64349b7a8d9fca67238e61aab3d33. 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/3vufDB24xb1eaS0IBP39ah.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/3vufDB24xb1eaS0IBP39ah.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34d92ad88d9aaec482792be32c82ac9b78d16e3bcc0a25aa1747267b9bafcd8. 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/6liLBsMc2BUayQPWnWaFhA.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/6liLBsMc2BUayQPWnWaFhA.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6abfa9e26514265770f9dbca90d316cdaaf40233e22304a260c9538592ad48b6. 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/7vEEUMyG7JMVGM9yV1n2I4.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/7vEEUMyG7JMVGM9yV1n2I4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec947963071e0c645b285a033717744cde4f28d2750446a177150d846afa79fa. 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/1XzbtBVmKaNCzhc9Egzi7m.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/1XzbtBVmKaNCzhc9Egzi7m.