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 0xd6e0e83676672cdc0cea61fa76a2a907450cf1898636cf959737b1a72b4f57e6. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a4c5b161-5994-42d9-b5cb-238c37978444.json and https://artists.proofprofile.net/proofs/artist/a4c5b161-5994-42d9-b5cb-238c37978444.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 0xa4d31ca86edce5713885457fdbdbb8e26cbe22237befbc3673d14734174aee0e. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:23:56Z), 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/QMPKX1669778.
Unravel (Tokyo Ghoul Opening) [English Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4043fdbf7755f87c8bc74de200e22ac4a20711e34aef13cf957686d44216e89f. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:45:35Z), 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/QM4DW1627039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9205cead234e3b4b4cf58efa1cc480be79700a7cb84b67a5e148df35109332. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QM2PV1607550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8e5eccb0b178311192a6800bd828377659813312726f5009cfd8ab56c2c746. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QM2PV1611358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6e4bd4b815f3719cfdf754d2a8edbf3eed83d088e6d33e3d97b17d073dfaeb. 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/QM2PV1631848.
Reluctant Heroes (Attack on Titan Original Soundtrack) [Acoustic]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5721fb1d8f8b903abbd0bcf3b9de6ad0e0b23b313e7352a814b0969c35f02af. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/UST8K1673888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9a92e3d05ce6b60be6bf96b882839552dc78cf2b2207c1edcbb7679ae61ba2. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:44:10Z), 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/UST8K1680348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc482bcc17d5e2de5f93bd2822bdf41188c82c713912ca8c254301c6b3ac90b39. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QZ4JJ1759193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4521e64829fe4175d9fb170857354b9e422e2ee9d2d48c82f9fc948424a82ce. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZ4JJ1778598.
Cho-Zets☆Dynamic! (DragonBall Super Op 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06224b6b309ebd05f5206e74a1e3b6ffaef1b885848eaf7477e8f2f3c52cece6. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QZARB1878268.
Period (From Fullmetal Alchemist Brotherhood)
Asphyxia (From Tokyo Ghoul:re) [Lullaby]
Kara No Kokoro (Naruto Shippuden Opening 20) [English]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760c8e2634685699023597baa3b68df3a702d746c6b7e78d8bc6e82c911c6c8e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZDA41834263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2ad9fa08b8125f8a6d0814ec0aaac74246c7f398f4d50b03d7c52b0d887d25. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZDA51871142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04a4ea1372ea67f91e45c4d96757ae9fdacd0d05c0d28ca7251f6145d7a27cf. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZDA81845665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba1b7fb270128ffe58d4c8e1dc93960957bcd8dd751ff6e5ddd5faea6d35f55. 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/QZ4JJ1969222.
Kabaneri of the Iron Fortress Ending 'Ninelie'
Rise (League of Legends Worlds 2018) [Acoustic]
Attack on Titan Opening 3 (Shinzou Wo Sasageyo)
Naruto Shippuden - Opening 16 | Silhouette
Attack on Titan Opening (Guren No Yumiya)
Dragon Ball Super Limit Break X Survivor
Genkai Toppa x Survivor (Dragon Ball Super Opening)
Limit Break x Survivor (Dragon Ball Super) LATINO
Black Butler Opening (Monochrome No Kiss)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b23ce06a82d72b719ce5e52bf5b117cd8dfb3fda50f930b32287ca7e6da7d25. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZFZ31931052.
Period Fullmetal Alchemist Brotherhood (English Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4682ba7295046337ceabfe243e5f94dec75244135f86db3f21f20c342c93de. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZHNA1959806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d061cbe0f95f4437b06a3d479a2664107c13120b77eebeb6465800150d4bb39. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZK6Q1977725.
Hologram ( Fullmetal Alchemist Brotherhood )
Again (From Fullmetal Alchemist Brotherhood)
The Witcher Original Soundtrack (Toss a Coin to Your Witcher)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e81f1d0c5ab97d58d87a265f62bd43388cc93cacdfad32e6fd5b9def46ff69. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZFZ62023969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925369d08a8ff8b117db6df7f23a8ad033521d94bd33635d70f03be07e1d8400. 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/QZFZ62098950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e967e8d6d1102ccc2879db93ba0d66126ca2dd65f828c05d28d6ca1bdf5e46c. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZHN72060268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703da6cd1931fb248cfb6b2df73a633311a197920baf13acddfd1201b86fce91. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:46:07Z), 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/QZHNC2025464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc171f026699a73ac514d5b47db25ef6ca683c6d672ca5ca500552c4878fa2bd6. 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/QZDA62150499.
Fairy Tail Zero Opening Ashita Wo Narase
Brave Shine (from Fate Stay Night Opening)
No Game No Life OP Acoustic (Acoustic Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08f2679eb15dc46de65d6376200b8ad91ba1aaa00f65e773e447c78c472bc71. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/QZK6M2178032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe599d7978d61fe3e363f7cf23fe9205750b4054395013ab17ec8218e51926424. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZK6M2178323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7f2cd58444e33972d454c9b031f9ab03352b848817cddd3dd63c622e1bdc9c. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZNWX2157536.
Black Rover (from Black Cloverブラッククローバー Op 3)
Sparkle スパークル (from Your Name / Kimi no Na wa / 君の名は。)
Your Lie in April OST / 四月は君の嘘 OST 「 Uso to Honto 」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe44fc43ee323f90d41668263f566c62a921f58d1085ee0f00492c2180dd25c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZFZ22260433.
Homura (Demon Slayer -Kimetsu no Yaiba The Movie: Mugen Train)
Pokemon Yellow Theme (Red / Blue / Yellow)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0390b39ce81f9d4eaba22f6e4688e58fc576e42e8cfd9788c5928f1d2b0768. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/QZDA62200547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e57f121892ddc913195283fac8f1c00fd71825672fb9f47789610b4c181035. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZDA62213923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb488fede14f1f062cd066892a0a2ae51bf15860a6927edb50f82e46b434cc68. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/QZES52266804.
Tanjiro Kamado and Tengen Uzui vs Gyutaro (from Demon Slayer 2)
The Rumbling Attack on Titan Final Season (Emotional Version)
Homura English Version (Demon Slayer: Kimetsu no yaiba The Movie: Mugen Train Ost)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb546ed623426bb989f8dd33fe76632e21847560e89503103d1e57dcc6c20afb4. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QZHNA2280679.
JUJUTSU KAISEN Opening (Emotional Version) 呪術廻戦 OP
Rengoku Death Tribute (Demon Slayer Ost)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383f415d7343837dac02240c3887e140a4518a5b23cb3516b46f61b066cd24b5. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:27:13Z), 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/QZMEN2244694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2821503dca799a9c57f5117f91446c47866f9fcc10972574041fc2b7f96e4c. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/QZNWW2233343.
Your lie in April Ending / Shigatsu wa Kimi no Uso ED
Elegy for Rem - Requiem of Silence (Re Zero Ost)
Sally's Song (from Nightmare Before Christmas)
The Very Very Very Strongest (One Piece Ost)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909f80f9f58e71bc08fddc227ffc251a63dd95ddb545c455913282d7bea20c70. 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/QZHN62389379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8fac06f38938bf30a4dcd268392b0f6c06f5898e81d3ff3b0d57a8aa7f9b822. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:56:26Z), 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/QZHNC2382325.
Crossing Field (Sword Art Online OP) [Acoustic Version]
Himitsu (I want to eat your pancreas Ost)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed67495fb8271f03d68a9cf98f2c9120f047221d69bddf7a34e81f1a108c084. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:18:04Z), 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/QZFYX2449140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe020d3d3d1eeaf8c992b71c3dbe90603c73e7ab73f1367d2bbee88308f300ffd. 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/QZNWV2489598.