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 0xf53d40a0b86555a9f5e966b46189d773c99c85d4ddbf9b7b32a12d91e799763a. 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/c712b3cb-abf8-4e31-953b-0b785cb33b8d.json and https://artists.proofprofile.net/proofs/artist/c712b3cb-abf8-4e31-953b-0b785cb33b8d.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 0xc3490ef7f9e6dcc3f2be4d970de5626c4ca2745ee445caeaed1d6e177a71f339. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPVI00208680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2292f9d1e1313cd2a877fa899786193c90523a5102067d5dd82a13478025fcd. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:41:58Z), 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/JPVI00208710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fdca95a9a67e10db933841ff9877da5c40ebf3e9eb9ee38e9603e9119e3a782. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:39:37Z), 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/JPVI00233650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ceabdcefa6bd2fb6adf004503a72fc4138d5e2cf42913a177d4a514846a5332. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:21:14Z), 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/JPVI00425640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e9a83d40240d4e25c6cd2185ca83a1b91e67c7f574b718973675bf140c208b. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:56:24Z), 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/JPVI00405090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb23abea439e915616f07d13529a24df7bacb9d8cc954a13c5248062b019fc90. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:28:10Z), 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/JPVI00546760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b17c38a8f122c3af2fb68e22c91f21ac55ebdc0a3422e66a849eb284b8df1c. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/JPB590808003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a674d58f0217dfac440df041223fdc092e8c8d6baa99b912cb5ce0ae967c485. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/JPB590908002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6641baa2e7d3c0a834486c0be8f1c5e396074f5f87b568f471144a9744145cfc. 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/JPB591508023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe000a9ca2edd41eb9c0bd5c96c0f3a739853e768a8779626bf8ada4411209ffe. 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/JPB591708005.
夏にはいいことあるだろう / 新しい世界で
コンプライアンスブルー / ファンキー特急
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf600b5d75e65f01375100b06c788d1e00d8fc72b4a34afb9baa64005577bda01. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JP92L2501980.
奥野真哉(ソウル・フラワー・ユニオン)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5b445fc20d0083855b93f389f51a739ff68d4b31d8497d719a41b2e224cfe2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPTE01906750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9cc5138fadf9659071ee1d306ec34c600255b51ecdf85fa56166749f2a51a54. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPKS00600165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0440ad40094a9a8d3b9c6448f059d1b21550166db11dd3c1553b03ec09e8d8dd. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/JPKS00602722.
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