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 0x1519a66f1db6f640f90d35dc8d942725ee8a9d92620a48c4faae4f80ea49e29a. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d8833e2e-9c47-42c7-948e-8b9389b186a1.json and https://artists.proofprofile.net/proofs/artist/d8833e2e-9c47-42c7-948e-8b9389b186a1.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 0xedbf8027202fb163526c4aceb7aec99d88a17a94e83935f4d5286fda33b42e13. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/JPW561900759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a337d01b45016318e39c166d6543bc38f75992548d1783446162a82d3e7193. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/JPW561900760.
スカーレット姉妹のFunkotにハマってる方 2017 feat. モリモリあつし
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3136807aa9eb2bbdd42cf56b1f07d97a54d46f940d76e42d44bfc9cbd698d160. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/JPW561900761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34220f25abaa2a84b3e966c1af8604d65a5d6ad5cfa95781eab13bb93299479. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/JPW561900762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffaed79797b954f6493c7fdc2c50e7f15d6aec8713a8b4fe874d28188bf7250. 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/JPW561900763.
おでんぱ☆ラヴガール (宇宙のuma'sリミックス) feat. ねこみりん, みゆ, uma
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e07aba4cd50c6e55cbb0403182e28a768ea53a28089912b3e1ab5ded1bd35d9. 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/JPW561900764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ca7c4bc4c6122c6444faec90c357b80d47a3f5ce03a6c009a1ec11bb6784da. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/JPW562001483.
Love☆Spellcard -Long Version- feat. uma, ましろ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40b1763b03f4a61e4c05f8780233a629c53c37de25504c1ec254b67470ca05b. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/JPW562001484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e1d216fa94b44a69184d4a3e2b72a5a4d6cd8798d511e3efe8d806b636fed8. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/JPW562001485.
Alice in Barbaric-land feat. uma, unatra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167a8894d57be5a00606874f06e8ffe597db53d9984c1faf3ea688fce9d5f6fd. 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/JPW562001486.
プリズムリバー三姉妹のUKハードコアにハマってる方 feat. モリモリあつし
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2bc81d6c7309d5375bbf56afeba872fb38f66c54f4ea017ffeea7a961e0959. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/JPW562001488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf972ebf099b4e44344c16d198139eac22458c267aa08502da52c56c5486f84d0. 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/JPW562001489.
Love☆Spellcard -Long Version- [Instrumental] feat. uma
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d06dd1e35c5295cd30cda052fdfec4677a22980534d7bb3b522d6832ea88ae. 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/JPW562001490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0938038b4ca2322df93d08fc7a03773a62c63476cdbb320f344a42c6670f89d2. 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/JPW561900754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae201397a781706d1c8cfe627dd2638f5685b565c2313cc3aadcfc930e0f7d3. 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/JPW561900755.
秘封倶楽部の治安悪い曲にハマってる方 feat. モリモリあつし
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30dd46534ad5c897948d4d08aec92ced7dac96e8a175785cecce17e05219ec0. 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/JPW561900757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94135a2136158e8391df900aa58accb14260d34288c732a1a9ea079a5c0e3cae. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/JPW561900758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a5d2cb46701bcc7cd02231528ead9a198bf1aed2e4a94888bb5dfd104d0957. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/JPW562108563.
Shooting Star feat. uma, モリモリあつし, Risa Yuzuki
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69666ac9c2740ab6f3c8854458f3e5c4ad0f64f748828f96ee36d4b53429ae7. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/JPW562108564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eee861648d9f0db748cf6ad82dcc81c9ece78be3f24d0cc806103ccbed354bf. 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/JPW562108565.
ぺーぺーぺーぺぺーぺーぺーぺーぺーぺーぺーぺぺーぺーぺー feat. モリモリあつし, 白上フブキ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d289dcf2520d8b6c36c003378247d0ef8ba71487d37c9b6af77e0f114fdd5d. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/JPW562108566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7103385c376cbcc6985a178ece074b3ac9ae44103653ab375812bd56fd58ac. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/JPW562108557.
希望の星は青霄に昇る (uma vs. Morimori Atsushi Extended Remix) feat. uma, モリモリあつし
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38865942d6e78ca4e57a082d5bee26e6e7be0696b2f2953e71629a71d2cda5e7. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/JPW562103258.
希望の星は青霄に昇る (uma vs. Morimori Atsushi Remix) feat. uma, モリモリあつし
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde704b57b097d637a4afa8a31efb8ed514d5ec88ff3bf4dcf77580b871e0bcdc. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/JPW562103259.
天則ラスボスのGlitch Hopにハマってる方 feat. モリモリあつし
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8650b58471fe9069bfc5d1a9b14bdc106c6590476bdba653a82eacff9e04ea5e. 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/JPW562108553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ffbb57ad9a8fcf4a0047a587fa858c347fdc5b2cf35c6500b358e8e649ffc52. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/JPW562108555.