DVA, dva or D.VA may refer to: Finance Debit Valuation Adjustment, one of the X-Value Adjustments in relation to derivative instruments held by banks Debt valuation adjustment, valuation on corpora
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2bf318e3f6c3cdc2710419d2284b94ddee4d9ee1f3d2ece2b9d8d06539aa6db. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/158417a3-12e1-4ab6-9d29-0b243759f588.json and https://artists.proofprofile.net/proofs/artist/158417a3-12e1-4ab6-9d29-0b243759f588.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Just Vybe (Soule:Power Mix) / Step 2 Funk
Bullet A'Go Fly / Dusk & Blackdown Remix
Battle Without Honor or Humanity (Argos Edit)
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3541dcc048cfd56f92eb6a55e83a932df0e0ad7bd73a1c916b7b26f4dbc55c0. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USCGJ1748926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7eb98e4888fee895b227c146f916d656186c90f218dec6ceb3b59925903f1f. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/GBLZC1000001.
Battle Without Honor or Humanity (From "Kill Bill")
The Very Best of Sci-fi & Fantasy (From Sucker Punch to V for Vendetta) [Original Motion Picture Soundtrack]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e964dd1c01b310542cab3edfc2965e7ea526cd06253aa8267c606d8f4345b6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBXWM1102588.