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 0x38126cc1a8d73803a3ab39f67818711c3545308269117c31b927a2abda4ea006. Chain 2 (Bitcoin): anchored in block 953819 (2026-06-15T18:31:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa4985dd-486b-4ce0-a1ca-c1a6a03a72f6.json and https://artists.proofprofile.net/proofs/artist/fa4985dd-486b-4ce0-a1ca-c1a6a03a72f6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
D.LEAGUE 23 -24 SEASON - ROUND SELECTION - ROUND.4
D.LEAGUE 22 -23 SEASON - ROUND SELECTION - ROUND.8
D.LEAGUE 23 -24 SEASON - ROUND SELECTION - ROUND.10
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 0xf020564d77288f7f6d85599f322a079ad1a85679f0a3feaf2422b67bbb5dbc1e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPX972212013.
D.LEAGUE 22 -23 SEASON - TEAM TITLE SELECTION
D.LEAGUE 22 -23 SEASON - ROUND SELECTION - ROUND.2
D.LEAGUE 22 -23 SEASON - ROUND SELECTION - ROUND.12
D.LEAGUE 22 -23 SEASON - ROUND SELECTION - ROUND.10
D.LEAGUE 22 -23 SEASON - ROUND SELECTION - ROUND.11
D.LEAGUE 22 -23 SEASON - ROUND SELECTION - ROUND.1