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 0x2176e2af80d62066415a600dafc08a67a1150a13b3760698093638e79cf54654. 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/bffc59b2-a24d-4416-b8a4-86f589e28be9.json and https://artists.proofprofile.net/proofs/artist/bffc59b2-a24d-4416-b8a4-86f589e28be9.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
on a clear day (kiki's delivery service lofi)
a town with an ocean view (kiki's delivery service lofi)
heartbroken kiki (kiki's delivery service lofi)
departure (kiki's delivery service lofi)
an unusual painting (kiki's delivery service lofi)
the village in may (my neighbor totoro lofi)
the path of the wind (my neighbor totoro lofi)
ending theme song (my neighbor totoro lofi)
work (hell's paradise: jigokuraku beats)
innocent arrogance (heavenly delusion: tengoku-daimakyo lofi)
setting sun (the dangers in my heart lofi)
merry-go-round of life (howl's moving castle lofi)
the legend of ashitaka (princess mononoke lofi)
where our blue is (jujutsu kaisen s2 beats)
the girl who fell from the sky (castle in the sky lofi)
spinning globe (the boy and the heron lofi)
opening (nausicaä of the valley of the wind lofi)
more than words (jujutsu kaisen s2 lofi)
the brave (frieren: beyond journey's end beats)
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 0x6ee35bbc40949bfec9e5471f7315fa5eafe1099a37f9545f4e9f01c977941048. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB72352863 — a six-check JSON result.
the boy who swallowed a star (howl's moving castle lofi)
be a flower (the apothecary diaries beats)
todome no ichigeki (spy × family s2 lofi)
Mechamaru's Farewell (Jujutsu Kaisen S2 E20)
Kugisaki's Last Confession (Jujutsu Kaisen S2 E19)
Jinshi's Worry (The Apothecary Diaries E12)
Fumi's Confession (Jujutsu Kaisen S2 E19)
Maomao's Speculation (The Apothecary Diaries E7)
Geto's Declaration of the Golden Age of Jujutsu (Jujutsu Kaisen, S.2 E.23)
Maomao the Hard Worker (The Apothecary Diaries, E14)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80282a0e7917ec76358b9812f16f9b221aa5d262f617577ef10a3241d46eb03. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ32480481 — a six-check JSON result.
Loulan's Mysterious Arrival (The Apothecary Diaries E14)
Lishu and the Forbidden Honey (The Apothecary Diaries E10)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac40abb54fe99cf167f21ced79f86f99718deef636706a02bb247f779b9ae4f4. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ62466404 — a six-check JSON result.
Maomao the Hard Worker 2 (The Apothecary Diaries E13)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84aba87182107c2719a7c68a3ce2fbf49bc7f19d04a96c8c76efe7a11a7c212c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ72449360 — a six-check JSON result.
Maomao's Deductive Logic (The Apothecary Diaries E16)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab2f696bf28c8fcafb7715f5374aab73944032669cdc3332813177a54b0b03c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA42449521 — a six-check JSON result.
Jinshi the Pure-Hearted Manager (The Apothecary Diaries E8)
Essential Theme (The Apothecary Diaries Ep12)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780fb1663dda68d112ebf29e40d4867b6350702f8d7c0ba121eb03342a18fe66. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA62463391 — a six-check JSON result.
Yamada's Tears of Affection (The Dangers in my Heart S2 Ep6)
Into the Wilds (Frieren: Beyond Journey's End E11)
Battle of Mages, D Minor in 6/8 (Frieren: Beyond Journey's End E21)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29df88d2918faf6b571a2fccc23231ee25bfc9f988081817e3ba4d34a5e155c2. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES92468155 — a six-check JSON result.
Flamme's Theme (Frieren: Beyond Journey's End E4)
Run, Stark (Frieren: Beyond Journey's End E12)
Suspenseful Theme (The Apothecary Diaries E22)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d007e71438192c4d33fca4091609f9cdd080822f02320b085a492698511252. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN72410759 — a six-check JSON result.
Peaceful Theme (Frieren: Beyond Journey's End E22)
Jinshi's Theme (The Apothecary Diaries E18)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a331c22610fc0ae3ae22354b3213739a692bb27aee78d9ac52762adfe162096. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN92448582 — a six-check JSON result.
Lakan's Monologue (The Apothecary Diaries E23)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532bfd9a8e44d3bd30bf1d7070d00c7f2f5f95a32749175a2f429e7631afa918. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNA2447881 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e8d9c4fbc6d294d8bcc080f1808a070130bdbca32bea4a0be12fcf889aa863. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNC2452833 — a six-check JSON result.
Let's Go Camping Again (Yuru Camp S3 E1)
Choice and Resolve (Sound! Euphonium S3 E1)
Peaceful School Life (Sound! Euphonium S3 E1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcdc39d4b6988852c0a9fef778b68080308e8f72a6066e8ccabdbe41ff1051a8. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6F2412233 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81838d1def4d53c15f00fe7c688c431e577bc20ec5758767006508e87fd4c3c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEM2471268 — a six-check JSON result.
Happily Ever After (Delicious in Dungeon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca97bdce3f425f6e93c3f2291bfe1f7f58b726433c69c42eb750b3790f3fd7e8. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEP2447219 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68372e54d6ba1bcca40846158f7a694438785cadc2d9a82c9ed1bdbfcac6dbfc. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMER2482715 — a six-check JSON result.
Impressionistic Theme (Delicious in Dungeon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70444c107888706915488c55be9d3507c83a8995101113643fe535761fd44827. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWR2492679 — a six-check JSON result.
Falin's Passion Plus (Delicious in Dungeon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4662d7967895129b8d431340ac436f2080dd95eec5a85ea0dd62944fd43c62. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWV2449408 — a six-check JSON result.
Strategy and Practice (Delicious in Dungeon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99cffc4348404802476428fb14967ec7a5ec0a364f7cc9b1daa1c54b3ecb6740. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWY2405434 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe472243f51f130da69776c1d3b1f436bcd53fcf2d7a12ef80030670e72e173e6. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWZ2480284 — a six-check JSON result.
The Rule of 10K Hours (MONOGATARI Series OFF & MONSTER Season)
Kobato's Deductions (SHOSHIMIN: How to become Ordinary)
Soothing Theme (MONOGATARI Series OFF & MONSTER Season)
Main Theme (MAKEINE: Too Many Losing Heroines!)
Essential Theme (MAKEINE: Too Many Losing Heroines!)
Unanswered Prayers (MAKEINE: Too Many Losing Heroines!)
Peaceful School Days (Makeine: Too Many Losing Heroines!)
Aqua's Method Acting (Oshi no Ko S2 E19)
Prequel Theme (MONOGATARI Series OFF & MONSTER Season)
Aqua's Method Acting Ⅱ (Oshi no Ko S2 E20)
Cryptanalysis Theme (MONOGATARI Series OFF & MONSTER Season)
Departure (MONOGATARI Series OFF & MONSTER Season)