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 0xd2c614f60b6d332eb514d3f1872df29884f967dd839b93a96f369425890afc2d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8f9cb887-20f4-4dfd-8ece-f7351e76e2cc.json and https://artists.proofprofile.net/proofs/artist/8f9cb887-20f4-4dfd-8ece-f7351e76e2cc.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 0xfe695fa66cbc1f73b9e8aa29579fdcd814d68955de76a391f13e649cb5499fa2. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:24:39Z), 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/JPX562400959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7adf19a2f7cf78145f58690a76e0c8e4b24c394f714c1b8858f5c20907a4685c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/JPX562400960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42516a5c645314a07cd37f116b763a10d6686e705cc52d5018dcf8f6af345f38. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/JPX562400961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x693cf27812f812f11a54fabf4fe8a796ef3b1fea04db1415df8cb2fad2cb658f. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/JPX562400962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83b7800a0a07a01d605023a5a0d4903219b76e70cbf165ce05d1d3f612afe9e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPX562400963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf025ecc5d319876e2c65dddbbbd66d69c7ff04eb7f01931e9c93820fe9e6c9bd. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:20:45Z), 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/JPX562400964.
CandyCookieChocolate (feat. HATSUNE MIKU & KASANE TETO)
キャンディークッキーチョコレート (feat. 初音ミク & 重音テト)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f207a93b00b4ebd7c43ed1dc8cc89a977c8879d259c896ec3d4140b5a17892. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/GX8LD2517436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417af22cf53fd41550175793f24f51178552e5301f9989d1ed703ffff42918ad. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCJPH2539820.
Kawaii Girl (feat. HATSUNE MIKU & Hanakuma Chifuyu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7214366b7fb10b58b8d0c46a2ad514c74c72c97605ff71537087bbfaaa251e71. 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/TCJPI2595387.
WereWolf (feat. KASANE TETO, HATSUNE MIKU & Ci flower)