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 0xba835d9413514e5c7d6653105a0e327860e5b8020dfcc08f20e40c760fab4582. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9a3a61bc-fb31-44b8-b50a-e5d99ccf7454.json and https://artists.proofprofile.net/proofs/artist/9a3a61bc-fb31-44b8-b50a-e5d99ccf7454.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x6d8de6dfd5766c444b7f0a569dae8d066866b96142e31781ac398c5283a3047a. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPE871702478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72898e04ea5ccdb01febb3b92ea5529fca99a37f3f570a420d17b64f8e579fd8. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/JPG102000622.
雨のウェンズデイ/カナリア諸島にて
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0a3b17f4d8988c591bf2db75e3499895d10783bd71f43b24d47dc4499f0a05. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:35:36Z), 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/QMFMF2137373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6e4e044acb20b44f66a7e96df692d8befc37acb5b7b0b332bc323107f367d1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPB622400276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39195893652a90c13bb86b8b58963cb6851ebfa95bb636f08644c7a4dab88865. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPB622401416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84263a9d036d4ca1e89fe0abc97041c0abf1d1e953d7390eb8048f521bb690c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPB602402525.
モナレコ・コンピ -大胆なキミじゃなきゃ-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd1bd8d40f89ddbf8e543f20d7fbeb72f75efda2f63e8a3a33d1b917c21f1a4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPS801851049.
Sweet Soul Revue (duet with Rainych, feat. evening cinema)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce36d98acd35a50f701ae4c4b9c34a4a5826eaa60234320ec28f129f4678e03. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPZ922200703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce36d98acd35a50f701ae4c4b9c34a4a5826eaa60234320ec28f129f4678e03. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/JPZ922200703.