鶴岡雅義と東京ロマンチカ 三條正人
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 0x4e156554ff1d085a1867430ac743cc7045aa0ac37f00ad59bc87a1ae9fd1886d. 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/af8edcff-8254-4438-b424-629b1f53d58c.json and https://artists.proofprofile.net/proofs/artist/af8edcff-8254-4438-b424-629b1f53d58c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
鶴岡雅義と東京ロマンチカ／三條正人 Vol. 2
鶴岡雅義と東京ロマンチカ／三條正人 Vol. 1
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 0xa08d6b2d51cacadee12d94351cafe57721d3eaef2b2787272e85dfd8e63b756e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPZ921216007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfbca06dd97f34d86d1b7aee54e39d245d0643cc79ea415fcf92ee497d97c4f3. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/JPZ921216014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42986427f1c86528fa9c78a2e4e1c03f4b827614e4bae9bba39eaa74a74b661. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/JPZ921216015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1059d4b56008e09fc624aac0facc59afdaf964531d862c1e085ebb777ba499a9. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/JPZ921216016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03fe0b27d9dc6f0390a8efd9105305154f48e19aea70d2ef963404271cd67bd4. 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/JPZ921216018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b2dcbc302b14e2062c089c3de05b336ee819fea534cb4b4d57050658ac9a09. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/JPZ921216019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a7c4eab7e9b9f9214720ddaf6f1e9b5f0c199e64a6f499d55ba2aaca2eac37. 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/JPZ921216020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331ac4ef8c819fc33deb093a5d94ee4666d69f6302af2ef0093af96cbd0cebec. 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/JPZ921215991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8f5fce1c0c16e24f158d87436ae0315ab9f0cb1560c4cb063e5e1dd0ac7d55. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/JPZ921215992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3416dac42dfa1345bc7fafd1265dd67a388cfce885cf8825eda64ef62812d2cd. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPZ921215993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fabdc695a9cc3c4962c9dbab7c892a4d7458e0d21bcd852cbe881c8b9e78712. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPZ921215995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf35f09ff917fb31a373694025266fc04e206d87b0cac3870fbb1ac25bbb225b. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/JPZ921215998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c8677c8d21950a430529ab3108f2cc619f8a8448ac04a63f5c057389b1016e. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/JPZ921215999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6e0d56642822e615d94601770ec1628184c6f8d962b33dd39598e8eac61c4a. 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/JPZ921216000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94288daa57fbcad4b73a8fc0b335fb29b8ac4123de4d64bc36d87d077f16a147. 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/JPZ921216003.