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 0xf5d53fb95e0c39fb40541c3cb8da0b5e952a59343b1e0e522798017e428303ee. 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/ec4c2911-b9f7-4d75-88fe-300c1cb8c03a.json and https://artists.proofprofile.net/proofs/artist/ec4c2911-b9f7-4d75-88fe-300c1cb8c03a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xc35921bc438e4d562b542e8f29de181046a85e94838782183ebc1b8ed4c4c98f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPKI09561460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf03c3f181eea846b4f8108dc0c7e1c1ad85f52e3f260776e3f68f872859e4c9. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/JPKI09561490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818684cdc0f1a39b4f070d5bafacf649781bb62dfe715e2c92785ec8703dcb33. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPKI09561510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5838dff349a333a183f8c3dfb3b77b0919edb90f5f01e863fee299af3bc0e6. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:52:33Z), 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/JPKI09561540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e1e1ee52d8413f02df456f0ddd8508fdc529723d63bcf1a80d8400133a0442. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:06:15Z), 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/JPKI09561560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfabbc490efd42cce1301d1de21bf89d0f4561fc0b296a0188028f9edd43c48d1. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/JPKI09561570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5fa16aed304f767f290a1246df0dd153d70de1f15b60b45228dfaade5dad459. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:44:41Z), 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/JPKI09561580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe347783773a5bf75528167d8f76429260f5889b952788a5cceb1d46ac6d0c5c8. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPKI09561600.
Uchiage Hanabi, Shitakara Miruka? Yokokara Miruka? Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d4750518553bfa44e2ca7bd98f5ad9bde373c480307a754948918d51fdeca4. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:55:28Z), 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/JPPC09617720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e8c23668bc8442765debbfc62739167ae22d8ddcb99a2c7846ee22e7ef40e8. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:04:19Z), 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/KRFU00100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6587a4e78f48426aeee077712acf8db25694a062ff584a90a2f4b98e90d87831. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/KRFU00100102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e89bd3b3190635f2c8448c4f84ad3e8701a0a91101d81b08275c9bb609f645. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:47:46Z), 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/KRFU00100103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6c38b10f83681e3956118caf4c603fc096424a65a30e408761e3113f0fe535. 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/KRFU00100104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e097dd50ff0e6fd6326335f52afaff5fb3ccf5a58f030847f8974aacb421390. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/KRFU00100105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41bd0ed59facb47a13153063f11d9ab9e1df6cb80b768e131bdab4c3250670b5. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/KRFU00100106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547f998d5dc696536051083adb2047c0419bd078d54c803f52caab1d4bd79b76. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/KRFU00100107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12522c33a56438c23a89625ffdc5b04d5e308a694ec370e60beef2a9df01c17. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/KRFU00100108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67966ef31406c364d2051769b4fa654e1ee180b3576e5e250dfbcb703ca841e. 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/KRFU00100114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2aff61a3b3688bb3fc91e98dcec3de867038e8da3decee84e82e61488cb58b. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T08:02:18Z), 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/KRFU00100115.
日本テレビ系水曜ドラマ「mother」オリジナル・サウンドトラック
Vendaval (World Music Ensemble - Jazz-Flamenco)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3099927522827fe28cc05ebbeec9a1fee5b274690ea27956f9cab09095ff81. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/JPPC09617780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5824e350b90d34a55b6f38a297e6275e86352dca5b963a6a60d93abac23afb. 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/JPPC09617800.
フジテレビ系ドラマ「366日」オリジナルサウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e1e1ee52d8413f02df456f0ddd8508fdc529723d63bcf1a80d8400133a0442. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T17:05:13Z), 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/JPKI09561560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe347783773a5bf75528167d8f76429260f5889b952788a5cceb1d46ac6d0c5c8. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/JPKI09561600.