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 0x6be761d3002bf8225bfb441e68ab43af38bc8268bb3648f31c575c708715093d. 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/f8fc054f-9c76-4f80-b718-ab438f91c72c.json and https://artists.proofprofile.net/proofs/artist/f8fc054f-9c76-4f80-b718-ab438f91c72c.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 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 0x102c840436d4168ee047cf6eac1cdd56018417d509ef269ffc70518e2f6d45d1. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/JPPI02000450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173d2ba7603291f93441ffedc137c34c6ccb61a308a098ce3335a524ea125605. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T08:17:14Z), 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/JPPI01400140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bac50ad25a2b5994558bafc34c3d9e033d9caf382558f442e0d7c521b25076f. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/JPPI01500160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5d87a0f2a3bfa0c9928e118f4555253447c98391de549a4ac104ed11118183. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/JPPI01500420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bac50ad25a2b5994558bafc34c3d9e033d9caf382558f442e0d7c521b25076f. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/JPPI01500160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b223f2f56d64796f322166a67329191c6b966defcae41f1bf24e5e8905e8fc. 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/JPPI01600580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b223f2f56d64796f322166a67329191c6b966defcae41f1bf24e5e8905e8fc. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPPI01600580.
南條愛乃 ベストアルバム THE MEMORIES APARTMENT (Anime)
Yoshino Nanjo Best Album THE MEMORIES APARTMENT (Anime)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d998f34419a0838344316a72e33130b0002d110edfe692509caeb1521c01c4. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/JPPI01700580.
南條愛乃 ベストアルバム THE MEMORIES APARTMENT - Anime -
Yoshino Nanjo Best Album THE MEMORIES APARTMENT (Original)
南條愛乃 ベストアルバム THE MEMORIES APARTMENT (Original)
南條愛乃 ベストアルバム THE MEMORIES APARTMENT - Original -
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8cb366dd0bb43dba8cde926c6241bc6d9713b171a30e09918632d8af713c12d. 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/JPPI01803190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8cb366dd0bb43dba8cde926c6241bc6d9713b171a30e09918632d8af713c12d. 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/JPPI01803190.
南條愛乃 ベストアルバム THE MEMORIES APARTMENT ‐ Original -
南條愛乃 ベストアルバム THE MEMORIES APARTMENT ‐ Anime -
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102c840436d4168ee047cf6eac1cdd56018417d509ef269ffc70518e2f6d45d1. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/JPPI02000450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102c840436d4168ee047cf6eac1cdd56018417d509ef269ffc70518e2f6d45d1. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/JPPI02000450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743ba9c3827e49842e05bb327fc68eaad77947b8cb6c4fd613a509f3a400cd23. 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/JPPI02002720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13ae617ee15146f21cdf4f4e4b969148d8badca9f315099951daf2908abc926. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/JPPI02002730.
待ち合わせはあのカフェで!!! (店長とのかけあいVer.)
待ち合わせはあのカフェで!!! ―店長とのかけあいVer.― (Tencho tono kakeai Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fdb1b0982c442f493e24ef01a1e14a5dcdddae496eee31e410e84aec3a4b552. 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/JPPI02101630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb453d44048f6895307d1bf907584df11fd40797339aab7741f5d552ca8e71b4e. 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/JPPI02200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fdb1b0982c442f493e24ef01a1e14a5dcdddae496eee31e410e84aec3a4b552. 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/JPPI02101630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb453d44048f6895307d1bf907584df11fd40797339aab7741f5d552ca8e71b4e. 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/JPPI02200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aeb3ea1586f91740b9aacb92049e55b3e3d7dfb00a179dc0b072bca04dfa697. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/JPPI02303530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6df3d71177e6c35977409bdae4aae8ead469e916e2ed0fb794dfad73cad2171. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T08:37:45Z), 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/JPPI02303640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a57780a0334a84361e76a1552153a6678c2c8b2a1a969f7666e5a76b0deaf0. 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/JPTF01521205.
愛シカタナンテ知ラナイ (featuring 南條愛乃)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02983e62991d648a8d40b0719d0df991fbc214120f8116e84ba4cc5b68a7b954. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/JPTF01521208.