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 0x6c77586d425fd07d0718394abb71c9e230906cdb933ae96e9ceb1d8beb6ac6c2. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f4bec259-119b-4128-8d01-4fb4c88bdeb2.json and https://artists.proofprofile.net/proofs/artist/f4bec259-119b-4128-8d01-4fb4c88bdeb2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
真夜中のロックンロール・ダンス - 2017 リマスター
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 0x4e77f3e7fe22688fb24678678ed77f17760e0596f2a32a6d44011b918df2f907. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPCO07757070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09fa191a90f714bc75fb5b696e81000d6c9c82647d3970f4e7966faad9478cf. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/JPCO07709240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44667c689c717e732df57bd67f19636c53e9bac35de65493bcb54daee0867b12. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T08:43:47Z), 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/JPCO07709250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eedf17895e401106ede8e53c66b237ec3e370614029b72eea9ddd874f3b22ed. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/JPCO07876520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86eb447d518866f8f3f1f374e0b4a9890820ec76b0fb37e9d4993f11ba32a17e. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:39:13Z), 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/JPCO07970050.