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 0xbfc0d13bcfb55fc4c4c6b782eb4ec00e55bf43cc8dc32d4363498cf28f69349b. 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/16002629-cf30-4bf4-a33b-55f9f17220bc.json and https://artists.proofprofile.net/proofs/artist/16002629-cf30-4bf4-a33b-55f9f17220bc.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 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 0xf9d39e78b17bd5cbb3f3f9d3b6150d667de000b3614da10529111b4fe9717ccf. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/JPTK00003550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea45b0b549d21ce8ae34bd0df7786fc8bdc26478977f478157489f3748b8767c. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/JPTK00104550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f53cba0d11e5f6a85a4affd164caa36b96983aaa09d12536755819a31897083. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPTK00003560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd91b0581650d0681d4d2b6089f5c447bad0bd0d452e5715976b8938bd32a25. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPTK00104570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00391e787231c18abc0fb7ec2dd47cad9a466abb2208425cc0ff6390e711a9e6. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/JPTK00104590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8056d2c9aad83bd90b056a739f35c8d30cda26250a03e42abceb4e90e718dc8c. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/JPTK00102140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8056d2c9aad83bd90b056a739f35c8d30cda26250a03e42abceb4e90e718dc8c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPTK00102140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8413d9c984135036f690a6b7b7220f585700a2de7419e2d9f777714983cf2f41. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/JPB531400022.
KINKYUJITAI 3 (feat. CHEHON, 775, HAN-KUN, MINMI, JUMBO MAATCH, MIKIDOZAN, APOLLO, EXPRESS, KIRA, KENTY GROSS, HISATOMI, BES, NATURAL WEAPON, RAY & SHINGO NISHINARI)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a779a917636d6099b88b455bc66bd129fb2da4c5bd36b5b4b11cb31b06a3989. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/TCJPU2354447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6227aa92ff70be66ff635c5720b33aac51ae018bec534e3504168e1b1b955c. 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/JPKS00101081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6227aa92ff70be66ff635c5720b33aac51ae018bec534e3504168e1b1b955c. 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/JPKS00101081.