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 0xb30cae08469c383ccacad0baafc5713990f44203bcae6db22d9abc77a611ebd0. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/084d9be0-0734-4112-a59d-b38f23ee0307.json and https://artists.proofprofile.net/proofs/artist/084d9be0-0734-4112-a59d-b38f23ee0307.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
実録!!「流麗なアルペジオにオタクは涙する、その謎を探るべく我々はアマゾンの奥地へ足を踏み入れた…」
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 0xa7a3533062cd53eb9a4edf589b6b77e8eb891d839b3f98a5d95397a477e58f52. 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/TCJPN2179747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6348c037c0d1ef05146f8c07898865e8a961ec9afef8db4879a668ae91b0d0a. 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/TCJPN2179756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3c0d57e980081e6ba4d810896eb7be227c4dfdbbef5bb57b14e19a1795a3b2. 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/TCJPR2259088.
レッドアイズオルタナティブブラックドラゴン
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74689122e74e00a117e2fd7bd2427c0e47f366bb5030513d2a883f361a382bfb. 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/TCJPR2259097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3a8960c72b04453b040448af354d3380e1b229c1707d9f93dbcb501d0dd348. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/TCJPR2259099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9f98b1c7c6870e4b73b56ad5ddc898526feedc65d54e117e7aecde41a9d41b. 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/TCJPR2259113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc506a127395538ee8a34927c54e4a291fdfb483ce67bcbf196431793edf1561e. 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/JPG102400361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf98a77d46167f7934a3feda3a51f5f902472fe49171f309552fd9425b5c88b4. 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/JPG102400362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff649b39c2b25244177d6fbb448675b38802ac9723a84c16a5bfad3ea75c218. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPG102400363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327347ddc62713342162e9f6c5ee93bda4b4af1c9a0a1db0ff5b7764841cf4f4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPG102400364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5ad9139a31946d59afed3a65f90cccf9136128d59be397091b3c66f5d80666. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/JPG102400365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3feb459c75a5786af674465904bcecf9889bd9e7e6e9e259e6b7fee69fabe1b0. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FRX282144296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851165dd120e49de92ba9c1982abe56845b83c8b85736614f2a60ef562d27136. 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/FRX282144298.