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 0xa146a3ccc3af4fd3a4064d231a2524090c6a48a36f72f186c40d9eb44823c507. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/817dacda-284f-4e4c-a372-aba2afde3d33.json and https://artists.proofprofile.net/proofs/artist/817dacda-284f-4e4c-a372-aba2afde3d33.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
キラキラクリスマスイルミネーション
ビフォーアフターおしゃれの魔法
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 0x6345cf4eed1bba5b7133b4f01bd6abea165965c128fb08873b0888e4656333a4. 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/SGW502583103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c1f3a6e4ec432b980e3c85238667d7e5ae331396c3377a3ea8741bd8bf9e10. 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/AEA3A2581932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3ecff071812a0b11d8044611a51c3987df86c9f4dd4584276f6d889a46c2f2. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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/AEA3A2580740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58efe0273fe2cb0f53d040ab405ce37ef250216373bcac463fcfc1248fef6b28. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/AEA3A2505575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850d65461b778d0c7bc9ca87a8cb8841dbe9e0da82ec734f4db83fdbec292d0d. 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/GXBAV2144548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf3cfdf699c0edfe638445ed2bd2b4ce5a659a06107b026790df739b363b039. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/GXBAV2078548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91732ac9027db796b876e6acd5a2726f4981d3aadd7df8adc2d80ac4f1f02111. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/GXBAV2041571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85245cb145e4e72a7dd6a0a16c042816b77c0dddec8144e17f2051bec51b7de. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QT5M32596899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0db251266b00383a563ce5f2ab0832a4377a1357e96e2742c276b514313bb0. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/QZZ7S2525033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba7088db08ee24d78f5a8a08adb8ec388ca9e038ba8a12dbdfca291801f269b. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/QT6ET2504547.