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 0xbe34a9699e1600e15509825274f3e0e8757e705f4b03cc9568adc8ee03d7490d. 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/e69328b3-3ed3-4a1f-abfd-3cc7cffb859c.json and https://artists.proofprofile.net/proofs/artist/e69328b3-3ed3-4a1f-abfd-3cc7cffb859c.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 0x204256027c046d7822d959c64385ce02a12fb9e3366e4765a7fc5654a479d050. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/USE830919685.
believe - Fate/stay night Unlimited Blade Works ED
OVERLAPPERS - Inou Battle Within Everyday Life OP
Catch Me Catch You - Cardcaptor Sakura OP
Extra Magic Hour - Amagi Brilliant Park OP
Rakuen no Tsubasa - Grisaia no Kajitsu OP
Glasslip OP - Natsu no Hi to Kimi no Koe
the last day of my adolescence - Hanamonogatari OP
Netsujou no Spectrum - Nanatsu no Taizai OP
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf56952ddd19a9b9e7faf375262f8ba83c97eb646331d20a13d84fe9a45193fb. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/USE830942188.
Beautiful Cruel World - Attack on Titan ED 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a2d0e8aa5fca3c6c3dcb71a646f42d45a294015794bff3cbec0740297663a7. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T14:38:04Z), 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/USE830943887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6547f5e8a95861f3ae8d08cba88a6e1daf78edc64dcb416a9fd51faee10272d2. 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/USE830940466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x056e4fb7ea2df0ca970338201602835f99298ff5398abaf46e0680fe8d8cea80. 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/USE830944053.
Moonbow - Bishoujo Senshi Sailor Moon Crystal
Hikaru nara - Shigatsu wa Kimi no Uso OP
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408dee18b601d4ce0746b2be5038fc29a20f7e8a6ccc444cbecf5c526fd68b8a. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:46:26Z), 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/USE830943465.
Crossing Field (from "Sword Art Online")
killy killy JOKER (from "Selector Infected WIXOSS")
Miiro (from "KanColle: Kantai Collection")
Fubuki (from "Kancolle: Kantai Collection")
Kisetsu wa Tsugitsugi Shindeiku (from "Tokyo Ghoul")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3306035c01344c5d16d17426c65836062f2aa897a474d2150e87d23ed9506887. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:43:15Z), 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/USE830972687.
Hacking to the Gate (from "Steins;Gate")
Hey World (from "DanMachi: Is It Wrong to Try to Pick Up Girls in a Dungeon?")
Miraikei Answer (from "Ore Monogatari!!: MY love STORY")
Monochrome no Kiss (from "Kuroshitsuji: Black Butler")
GATE ~Sore wa Akatsuki no you ni~ (from "GATE")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a073c4b495b13c5d75a9ad5e42a975b1808da2b526126c92e1cb08dcac9c61. 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/USE831501431.
Connect (from "Puella Magi Madoka Magica")
Magia (from "Puella Magi Madoka Magica")
Outer Science (Kagerou Project || Mekakucity Actors)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3f07f0066faa130902f517267bcc33fb4e4503aeaa75aed60d6291f3b4a57a. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:04:06Z), 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/USE831506000.
Rising Rainbow (from "Food Wars: Shokugeki no Soma")
Enemy Approaching! - UNDERTALE Normal Battle Music
Brand-New World (from "Gakusen Toshi Asterisk: The Asterisk Wars")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d0491188ec4215579f174c5c3df53fcf4902d78fc8fa02d23373edb821d861. 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/USE831521869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46281fb5ffc917ed4d81d02e7c5a7b5e9a5745b49ee563922485c2fe9b410c7e. 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/USE831523613.
Hastune Miku - Cendrillon (Instrumental)
Zenryoku Batankyuu (from "Osomatsu-san")
Kibou no Uta (from "Shokugeki no Soma: FOOD WARS!")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa362896249cb4dc472d8409de7d6fd9c5da0faab4a8bab11dcfdd50728a854b0. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:29:24Z), 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/USE831559040.
Crazy Noisy Bizarre Town (From "Jojo's Bizarre Adventure: Diamond Is Unbreakable")
Gyakuten Winner (from "Gyakuten Saiban: Ace Attorney")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834d759177d8a366c4c6d5ce6c183f7bf0bf22903ba6f0878c78446df5abed31. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:52:31Z), 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/USE831565448.
Redo (feat. Hatsune Miku) [From "Re:ZERO: Starting Life in Another World"]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa83031c748c4e9c9d6ce0c6d8ec546abf4ecc8528fc91dc577d1b5d5dbc0a7. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USE831574518.
Aozora Jumping Heart (From "Love Live! Sunshine!!")
Jinsei wa Subarashii (from "Gyakuten Saiban: Ace Attorney")
Chase (From "Jojo's Bizarre Adventure: Diamond Is Unbreakable")
Friend Shitai (from "Gakkou Gurashi: SCHOOL-LIVE!")
Hanamaru Biyori (From "Touken Ranbu: Hanamaru") [Instrumental]
Dream X Scramble! (From "Keijo!!!!!!!!")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe2ac9f01b7704ee7223771aa1c2259218d86b210f0e6b45bd4cbf5058fdcee. 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/USE831599649.
Great Days (From "Jojo's Bizarre Adventure: Diamond Is Unbreakable")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc899fe12fa2877e932001e116a7d5d7d51a093586b0d648c8ccfc2b1024b92. 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/USY281605193.
Genkai Toppa x Survivor (from "Dragon Ball Z Super")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20520f90b6ddb9841ee699b81002d023917627f5d12a161ce822535a95e2275b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZ22B1748043.
Sore wa Bokutachi no Kiseki (From "Love Live! School Idol Project")
Aozora no Rhapsody (From "Kobayashi-san Chi no Maid Dragon")
Peace Sign (from "My Hero Academia Season 2")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3f34d3f85129571c1fdd65a7ffa3549d9fff7edad8f8e01d33e241154a5132. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/QZ22B1777100.
Shinzou wo Sasageyo! (From "Attack on Titan Season 2")
Shiny Ray (From "Little Witch Academia")
Sora ni Utaeba (From "My Hero Academia Season 2")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07eee1115635bc35f98ddec47d4e6a5c9ee1db67378b5858c5ba07249d9e8ac. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZ22B1814906.
Zen Zen Zense (From "Your Name. - Kimi no Na wa.")
Datte Atashi no Hero (From "My Hero Academia Season 2")
Eiyuu Unmei no Uta (From "Fate/Apocrypha")
COLORS (From "Code Geass: Lelouch of the Rebellion")
White (From "Clean Freak! Aoyama Kun") [Instrumental]
Sayonara Moon Town (From "Boruto: Naruto Next Generations")
Over (From "Boruto: Naruto Next Generations")
Hello! My World!! (From "Knight's & Magic")
Here (from "Mahoutsukai no Yome: The Ancient Magus' Bride)
Howling (From "Nanatsu no Taizai: The Seven Deadly Sins")
Braver (From "Food Wars: Shokugeki no Soma")
Clear (From "Cardcaptor Sakura: Clear Card")
Katte ni My Soul (From "Gintama: Shirogane no Tamashii-hen")
Ryuusei (From "Sword Art Online Alternative: Gun Gale Online")
It's All in the Game (From "Boruto: Naruto Next Generations")
Make Debut! (From "Uma Musume: Pretty Derby")
Symbol - Acoustic Ver. (From "Shokugeki no Soma: Food Wars! The Third Plate")
Update (From "My Hero Academia Season 3")
Noisy Love Power (From "Mahou Shoujo Ore")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86222696c9fbdd49974313d5ff303c8e7bf515f3676b9ddc5203fc764dea61a5. 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/QZ22B1958161.
I Wanna Be... (From "Gintama: Shirogane no Tamashii-Hen)
DeCIDE (From "How Not to Summon a Demon Lord")
Rocket Beat (From "Cardcaptor Sakura: Clear Card")
Red Swan (From "Attack on Titan Season 3")
Make My Story (From: "My Hero Academia Season 3")
Heading to Over (From "Free! -Dive to the Future-")
360° Hoshi no Orchestra (From "Shichisei no Subaru: Seven Senses of the Re'Union")
Vital (From "Satsuriku no Tenshi: Angels of Death")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a23a35db7e73dadb889a30ad0d8cb81c142793256685e6cc0139da28637691. 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/QZ22B1980552.
Lonely Go! (From "Boruto: Naruto Next Generations")
Butter-Fly Acoustic Ver. (from "Digimon Adventure")
ROAR (from "Toaru Majutsu no Index III")
RISE (from "The Rising of the Shield Hero")
RESISTER (from "Sword Art Online: Alicization")
Break the Blue!! (From "Girly Air Force")
Atria (From "Shokugeki no Soma: Food Wars! The Third Plate")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316e8f904f0ab545993f9a6fda10035ad021161d03128429cb4c26e6aef3f2df. 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/QZ22B2082658.
Iris (from "Sword Art Online: Alicization")
Kawaki wo Ameku (From "Domestic na Kanojo")
FAITH (from "The Rising of the Shield Hero")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869d612459dc890dcf58f45fb080773f80e68d9be04aabf88df46fb3f94d3dbd. 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/QZ22B2097405.
NO-LIMIT (From "Fairy Tail Final Series")
Star Marker (From "My Hero Academia Season 4")
Hero too (From "My Hero Academia Season 4")
DADDY! DADDY! DO! (From "Kaguya-sama: Love is War")
ADAMAS (From "Sword Art Online: Alicization")
Mikakunin Hikousen (From "Digimon Adventure:")
SPARK-AGAIN (From "Fire Force Season 2")
ANIMA (From "Sword Art Online: Alicization - War of Underworld Part 2")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d846aef28cf10c334628b52c872060fc22f1abbdb02e9e7688c41e633fca4d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZGWX2018904.
Hajimete no Chuu [GEKISHIBU] (From "Kiteretsu Daihyakka")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd27f673b27250bcb1ccb00101d6a9b8f6e37fe99b9a232b3a7d41c38b8548f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM2PV1648197.
Ever Grande City (Pokemon Ruby/Sapphire)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2764cd9d625fa800df6f817133c75db3ad20363d915ca4a5e25883f5f94189bc. 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/USE830928692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14e13633a8cc62c76aab12dfa2e5ed4da6c2c0d148e67c609997bb1073a8883. 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/USE830928711.