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 0x31c1127cf531aeec29179768121e8eda4032af346d42d5c68eced99a621f0182. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b5e05d75-e16a-44ff-9044-9d8e48fb84a4.json and https://artists.proofprofile.net/proofs/artist/b5e05d75-e16a-44ff-9044-9d8e48fb84a4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
for summon wall of "ArtinaToss" - アルティナ・トスの召喚壁に捧ぐ
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 0xe5ad02fd22b9a4633101115fb8b959e43a2088237e2949957fc80a5fbbba2da6. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/TCJPL2063785.
HALTOR - from summon wall of "Artina Toss" (Part1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63a70abfff6c359ae25b64f3536a92eedd47910018dafe0e56824f624b49750. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCJPQ2116453.
償いのハルトア - from summon wall of "Artina Toss" (Part2)
HALTOR - from summon wall of "Artina Toss" (Part2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216cdebb3cc986ffa807df91060e126718cb13e34235b49fd56ca1273e97ac0b. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:49:17Z), 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/TCJPQ2118623.
償いのハルトア - from summon wall of "Artina Toss" (Part1)