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 0x52b4a7a7e1f25667146a5fdbe9cb18d733241cf41018c3056a526fb10903e9a0. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/72cc3d2a-effd-4f9b-b15b-16bbb7560b34.json and https://artists.proofprofile.net/proofs/artist/72cc3d2a-effd-4f9b-b15b-16bbb7560b34.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Growing Old (Lord, I Must Be Growin' Old)
Back To Back - The Happenings & The Orlons
The Happenings - Their Very Best (Rerecorded)
A Small Happening - [The Dave Cash Collection]
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 0xb8620ff4d374cbb0dbe8c3595511434445fe3afbe3769a49c45f3b2023166228. 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/3X7U7KoIUXHGoIqGw9ho1W.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/3X7U7KoIUXHGoIqGw9ho1W.
100 Greatest 60s: Golden Oldies From The Sixties
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8620ff4d374cbb0dbe8c3595511434445fe3afbe3769a49c45f3b2023166228. 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/0rpTCKPZtWrnVtRcQIxP1n.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/0rpTCKPZtWrnVtRcQIxP1n.