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 0xf65d20369fadd9c20c28ac0c6d16bc1d0a36784f6edebfd38922b2ecbf35ceef. Chain 2 (Bitcoin): anchored in block 953808 (2026-06-15T16:45:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ee8fef73-0705-42e9-9915-f31ad8132998.json and https://artists.proofprofile.net/proofs/artist/ee8fef73-0705-42e9-9915-f31ad8132998.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
東洋空想世界「blue egoist」 Original Sound Tracks
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 0x6e32084d4eb5734d926c564c7de915949c58f1bb351a7fb955206f12170a2b38. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/JPZ632400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c20de5d082de86f7d949df29b7ebf30f2f87f24c8bb00e75f765669ce96075. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/JPZ632400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2bd5f86e2d84ce5f4d58aa2427bbfdb4cfba98b9dcf4b1d2427e8dfbb2fa1fb. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/JPZ632400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd335a652b4f07c816384e5ba1429a163551e8e66eab4942b60ecd1828fb2d7. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/JPZ632400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d828bd7e8342694b18938ebd3666484596ae55faa62951a6e549d553305b5bc. 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/JPZ632400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19798f3290a2ae40dc06e8492ddaa071a98f5965c3835cbcf86968c03b8f9d75. 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/JPZ632400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef72dcf5ba419ebcb1e00ede833dac7b93a42225554d2826a2e82d24fd514849. 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/JPZ632400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4879eeb6ee632756d829e303f636b82a4b8cb72d09ffa14c07e4ebcad546fb9. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/JPZ632400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8698afb848b8028d1972842621158e961df72a886033712b803046ed580fc251. 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/JPZ632400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0a7f7e1ad9b522e3d8890b556620d424919609ed54636a961293b59e2a0283. 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/JPZ632400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36646f8bbb9cdfc17293680a5e8f342320f132211d3b7ca102e3302b5f4555b0. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPZ632400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a18bea56ff00d452ab240bb0a12988d1bb9cfe50ca62b23fc2dbf98292e4d3. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/JPZ632400030.
Oriental Fantasy”blue egoist" Original Sound Tracks