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 0xe053a7cadcf8e5ac1dd99382be9d7d258450c015d74f28ba57daa9ba055adef0. 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/03e6066d-1bd3-4b56-b654-e71ef3c1718b.json and https://artists.proofprofile.net/proofs/artist/03e6066d-1bd3-4b56-b654-e71ef3c1718b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
パチスロ 機甲戦記ドラグナー オリジナルソングス
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 0xf6db94d1d2e3f12a180e7e2bc9dfa20382b1d29e8edce27d118059560d8b0476. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TCJPI1988921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947b213dabc29c50d5a0e6017c43a0570a53ac754633213e1369e7966ac6bbf5. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCJPI1988927.
We love the EARTH from HIROSHIMA (英語バージョン)
We love the EARTH from HIROSHIMA (日本語バージョン)
We love the EARTH from HIROSHIMA - 日本語バージョン
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2309846292377dc4a933966181c86b6371253ae3b2c4bdf0aa5d1b28dc20abc9. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TCJPW2314781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557ddded9984ec8c0c92046b1496e639a81720a11d800256a5d49c8993cc2d0b. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/JPCO02438210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6619d13e63b88fbb48c17d2b8271bec561bbd32a7c997526219e2d5ef9e015. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/JPB602500836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0374fd6f65e7470f4a235881e50fa91296600398ab0afaf985616c22ecd5e3d. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/JPB602500838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2739354294fb2cea8a3a55697776b12e13327416052cdcb017f5a516aa999ec0. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/JPB602500839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39189f5625ceb24f3d9302dd666eaff54b7332b53913d5eefc9b00c13d25ca9b. 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/JPB602500840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6d8a1e03f91bf2ed33ab5b105ce91e53f00ac527c907b01c2a3fb6031e5148. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/JPB602500843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5599d8a68bef86f9687fea21fabc92c623b9fdb8b8ba7b0b6f0ab8970ec043. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/JPB602500845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42f8acfddfb362fdf386ea5bf7f96aa244bd84d258e8e44d3f937dd603fbcee. 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/JPB602500846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ed87f5e273fe170fe3bbd816c0838654de8a14b7a5b16f041904d56269013b. 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/JPB602500847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a097d897b65091fd0d0467660fa2346f5da42456e6d810a001cfa6ec7e0e6ae. 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/JPB602500848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8265d3a018c43a28510bbbb35a7f48cf242603516e9f5987c101b35c27aedb. 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/JPB602500849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9372ac738b5c348fb463dafe14ce78a22b47358d4a0437a61a8054f8eb983c. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/JPVI02500308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630410247dc9c067d151797f6a571d608cfa4fcc394a235fd10ea1703e9de9e6. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/JPVI02500309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa661cc9f0b23667bae329b4527b0df0532a35bc13a46d49929571e28338020cf. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/JPVI02500310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64fc76d709162f6ebe81244e806be26b8cc8d182a1f3b4af32dbf11af4cf19be. 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/JPVI02500311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda716b1a4b5b4f584542a6148749df0b6e8e8115f0cd669e5a4f4490c9c7e1a7. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/JPVI02500312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7fcdbba5b39bed6cfe098f8c3d87f00121217713ec462f07cdc450c714f476. 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/JPVI02500313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe874b7e843ecf6b7b65767b173a530441b53647d6a5b8ad7703b72c5ac414e9b. 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/JPVI02500314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207675979941a8d555fb746d8a9e10e9f69e353fe8c13d52e3a3e9a3bec45bdf. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/JPVI02500315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107f0489a9079a1edb55dadf0e53319e431a5b27061662ccf665114fea393a1f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/JPVI02500316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfe06f718632c0ca7ba12896bf57e3221ecf965c00c4e336f8bedc2d3739798. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPVI02500317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4e2cc464b8f087a5de7a21a3bbf370f47d373c5882e17a989936039d48ef94. 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/JPVI02500318.
トロット・ガールズ・ジャパン 準決勝 No.1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9486c21ee0f1560a1576ec39039be26ba9d62a275a75983b180131fb1e34ce. 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/JPCO02401760.