1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x16036b0f26061434d82dc112a08e1c0084c9f2e008b4bbcddb8836c3b046a276. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f36a7565-b1c0-42b6-9606-ca34d8789e40.json and https://artists.proofprofile.net/proofs/artist/f36a7565-b1c0-42b6-9606-ca34d8789e40.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
After the Rain: Impressions on Daily Sounds and Field Recordings During a Moment of Rebirth and Awakening