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 0x728a24579c84611d1d27ae4141cf807ff602080095320e4ae26eeaffeff6cfa1. 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/adb9bfe7-986d-4398-baa7-5ab8e0ee35bb.json and https://artists.proofprofile.net/proofs/artist/adb9bfe7-986d-4398-baa7-5ab8e0ee35bb.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 0x2e2f1059e64e6fbe00847aa560af55c3a90a4c1b9620d773b73e86a2ee552038. 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/52L2ZhBPOQ8HlL73hFGB13.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/52L2ZhBPOQ8HlL73hFGB13.
{"copyright_id":"0x690870c8e9d47c8c645420c0accec7dbc359e19250cc618fc0f1e222a0e959e2","isrc":"UK6821728919","name":"Soft Wind Rain Ambience","registered_at":"2026-06-09T02:44:34Z","spotify_id":"6GEKa7KgISei4tgPcpeRC4","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690870c8e9d47c8c645420c0accec7dbc359e19250cc618fc0f1e222a0e959e2. 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/6GEKa7KgISei4tgPcpeRC4.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/6GEKa7KgISei4tgPcpeRC4.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945f9ba4e6e0118fd8917d2673917232426b879b4e21e35c6824328ad46d1741. 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/4ppN4ETiGgV5H5RAc4BKNI.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/4ppN4ETiGgV5H5RAc4BKNI.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8094b9bbed9e3325a757f243f402afe35335255fdd8061ac68857e49ac05463. 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/7JqgUnOkItl2ps2MK4yez4.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/7JqgUnOkItl2ps2MK4yez4.