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 0x66d2251d5b67f6ed2233c9b9471e24346bb9aa942f1af03664e80adfeae391e6. 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/a0dd4d0e-b2b5-48a9-93c5-28be45b069a3.json and https://artists.proofprofile.net/proofs/artist/a0dd4d0e-b2b5-48a9-93c5-28be45b069a3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
｢とある科学の超電磁砲｣ORIGINAL SOUND TRACK SPARK!!
[A Certain Magical Index]Original SOUND Track1
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 0x0618268d70895edb68490afab9f923cbc55b22ab368ac0ae203fb4636173a65f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPPI00861371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967b36dca65151f557ee1f1719efc2b9b1fb1c3d5707b9cf749bd5af8c51fb79. 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/JPPI00863750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0585e719a862d5abcdd036ab09ea3bc0155369e45b27a22b08a0d2076b707ba. 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/JPPI00863760.
[A Certain Magical Index]Original SOUND Track (2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7406928fb90ce11790751ca5e3bcad9f845f43576ebca304573134f0c334cf2. 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/JPPI00952660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8557be8396798f44828a3cd8fab85e7fef236041272007d4dac6b124809842. 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/JPPI00952790.
｢とある科学の超電磁砲｣ORIGINAL SOUND TRACK 2 MOMENT
[A Certain Scientific Railgun]ORIGINAL SOUND TRACK SPARK!!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095b5653d3e7014de8cf8b356f8571704378b9dc40d4bf4224e8c121044ef2d0. 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/JPPI00963401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c79fe81396f6cca42dcc6e0b1c1ba63ebeeaf8c045ddda630cc9b081f703028. 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/JPPI00964530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2385cba9c6d8db3b7f1de67a0af5eacc63d809f85817e33ba4fe3c440dda369. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPPI00964630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd71db17da1f29848c9e1db42e6842d7a68fa1ba576a936404dd790cf7444064. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/JPPI00964670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c9f3017e98f87c5ca7304fb7cb1bd0a3249af4f44e6dc63105507f2a39e70f. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/JPPI00964680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc82bc2186131882c2249b43e236090e1cb581a10e2e12f03e4764b6527697b. 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/JPPI01051190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b6c5254dfff2b15e7b0552a1fa7bb94a885cc06d02f872a27acb4225d13010. 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/JPPI01051200.
[A Certain Scientific Railgun]ORIGINAL SOUND TRACK 2 MOMENT
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc82bc2186131882c2249b43e236090e1cb581a10e2e12f03e4764b6527697b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPPI01051190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6bb10d08e0507e32b976ce05f07625a5068a04c246a325029e6e44354d989e. 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/JPPI01055620.
[A Certain Magical Index2]ORIGINAL SOUND TRACK (1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9fed6dac0266354f1fe7f8a68d58ae748c0d503b094c4261d253e3e07999141. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPPI01151220.
[A Certain Magical Index2]ORIGINAL SOUND TRACK
selector infected WIXOSS music particle 2 ORIGINAL SOUNDTRACK 1
selector spread WIXOSS music particle 2 ORIGINAL SOUNDTRACK 2
TVアニメ「ヘヴィーオブジェクト」 オリジナルサウンドトラック
Lostorage incited WIXOSS ORIGINAL SOUNDTRACK