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 0xc310cd8ccce81a77c41cae966f17de212377a0d4b5451231ae0d0e7cd61a83dd. 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/578d4a44-ad46-4b4a-8193-3ea538d0fe47.json and https://artists.proofprofile.net/proofs/artist/578d4a44-ad46-4b4a-8193-3ea538d0fe47.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 0x75a040f558cbf6b7ca96488b7574837ceb6154de4bab1d5354d81b496e34dbd4. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/JPTE01906730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0123e45cdedd80427627acab214e9ff3c55e889174a0a0ab2f4edb6bd7d9e1a. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/JPTE01906740.
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 0x9f2983a9cd2a71bfb3123d9c604baf5c4f539bed8f71f3ecd77066bbd8bf37d2. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/JPWP00800851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40a644e2e0571520bd4ab3b8490d04921c0b841f516a92c0c00ebe278c72e81. 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/JPWP00800852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70efbf9bf244d73a90b9f5d1adcb50d04d46a3c6bb9ff351f7d080cacc271d6. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/JPWP00800853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ca9d5ec4d75eff67623a184e3673f77bb1c0ba56c03165de687413f27cc0a9. 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/JPWP00800854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1045cae75a6d78d20fb9cf1737c602d21b747aef513b8390e89b1be315ad494d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPWP00800855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc658aa2b44d1159ff0e192b717a3ed1eac0ca784e4c43791d8747240a860ad92. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/JPWP00800856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4b6c2099a3a18a383554e752e8078198cd060694e498e71fc0aa0cbc715400. 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/JPWP00800857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844aee4d8265f7e6ba2d774919b787f0cb91162f3650129e89694a25e39a605d. 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/JPWP00800858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11120e88428a5986eb119f2537964d7d46fec8cb249697e0702b986a6e106fda. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/JPWP00800859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2666739c2f6fe8d17360665be31d182e9303de25f4eab47fc7510a0a51201bce. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPWP00800860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca3cb2683436e3175a53f56362c3a8b6a1b113500abf605b0f50bb9c4aa4105. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/JPWP00800861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa847e8f622bdacfb717b96b544068544d1369cee5e99597de9eeffebce53fd61. 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/JPWP00800862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ba2deb68d3a3cad650426e19ccc13dbc2e977e6b5119b3f0786e24275712b5. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/JPWP00800863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9790fa0ab304dacbfb4c2ad008a0c5186c184073c26bed6ab14fa86e3be66fa6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPWP00800864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab65e6b81b506d53118ecb8c2a4e9f43951676af561c0b31b4c5f9225acf61d9. 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/JPWP00800865.
50kaitenz no Gyaaa!! 10th Anniversary Edition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab449d0fb22db83522716117a329272558c30c14223cd355d214e21c09e3b4f. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/JPWP01671507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c0e6301e9e2d985b955275b06e4a44e75dbc8f13360b2b2065debaacc1f868. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/JPWP01671520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865a85003febeb929bcae91fe3974e6781258da655c2a062a529f105f61e507f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPWP01671508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022a7e678dc98e4b6508518d30b884b63c2df961d442de37c2eebe0a928018b2. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/JPWP01671509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1730e6577804364a155525dfbcb450af333f7a91fa479b5cf35d5f9f4b9bac. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/JPWP01671522.