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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844cb122471c6edc3d49f6d843a1ab5f24b2fbe43d7c24267299d796b4587db6. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1895e83e-d832-43c5-afcd-f3c986a2400e.json and https://artists.proofprofile.net/proofs/artist/1895e83e-d832-43c5-afcd-f3c986a2400e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
ドラマ24「コタキ兄弟と四苦八苦」オリジナル・サウンドトラック
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2b69ea9be0b0d0544e2fe6cc9a4b829c4e637a822d5a2e981e7ba22f48fafb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPJ902003070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b09369cdee1c7e81f4dfc9d57872c185de2557b6faa5222a85bec92e3c363d. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPJ902003080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f706b680785c13c25666d76e6959ae1fcf5d0554da97b173aeca8a12912728. 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/JPJ902003150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9baff9c481ea1638fa91bcaa686662231e39e1fa2e41de6b60205131b39b36. 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/JPJ902003190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d71d1cdefa5e95c9fbce01b80c6310e52e81e62a2207aadae7ff78f43cc79f7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPJ902003380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b8ce8ee7b0e0d76009c7b65369cbccfe3772b0b982614ed2de7e6ec23ede13. 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/JPJ902003520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1322d5e60d6240887d9ac2dbcd0a094204a18b77d748bf7678ab3e26630dc9e9. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/JPJ902003180.
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 0x029b7e3322cb1598a2d7d9213b412df0abc72235e1b51cf82fd3206067dfccf5. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/JPJ902003310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0d97070db7df742ccfa2d868b7069ae33995bf2d004ffe2da58ac66ca3013a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPJ901802440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c575a943239fe6891e9f58042ad3d80ff9bfa6acdafb41433f311edc6e7f283. 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/JPJ901802450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af57068368b9beb86383a78fa3b77a844972c1edb6d9c720cfdf84603fe9fb1. 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/JPJ901802460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257967a248dd98e21579129630c7e640ca70354b308af5281632a63dc892c693. 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/JPJ901802470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27faf651123b9e2bea70e6c9ff0f0285d25401aa0eb7d0b311715607a9f3964. 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/JPJ901802490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1d896bb1149714625bd8f41133e165c4714687f2fd38cd756e171e4a12244f. 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/JPJ901802500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2995bd1397721bb293c1918b6f6fb81445a2a0769f6c635f1de1d8538b619fd6. 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/JPJ901802520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b6c3f8726cec16b14d4710993a151902289fb977ff4f98fa4b23d80eb4b9e9. 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/JPJ901802530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf984c6b1f8686638ff84d59f9521f3c459ceb1e0685d8e0fbed9694ef9ec7de. 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/JPJ901802540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e924103d3c2cfbefba29a0ff9287a79c23f65985a19b2a58cc6bbdde3f742e1. 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/JPJ901802480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6d1219d46dceb6b22f3c40a649551b04f7f2e29f165f06bba1e4f9e6b77256. 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/JPJ901802510.