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 0xe2124b54a5fa4ff61123808a3cad8669f14b2b71c65d718b1e7f5fc41d609484. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e49c22d7-2551-4455-96b6-3963ec0e4352.json and https://artists.proofprofile.net/proofs/artist/e49c22d7-2551-4455-96b6-3963ec0e4352.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
In the season (songs_from_the_other_room_vol2)
Acqua su questa foglia (songs_fom_the_other_room_vol3)
there, faraway (songs_from_the_other_room_vol4)
Parsifal (songs_from_the_other_room_vol_5)
my side (songs_from_the_other_room_vol_6)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2826e7e8bd400a10fd495a2916b931c3895506b7bcba092e4eca6dce8622484b. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:22:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAU2520098.
Songs From The Other Room (vol_7: Leeuwerik)
Songs from the other room (vol.8: Want to me)
Songs from the Other Room (vol.9: Back to Seasons)