thumb|The Ghost of Barbara Radziwiłł by Wojciech Gerson. Ghosts are a common form of the undead. The undead are beings in mythology, legend, or fiction that are deceased but behave as if they were
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 0x8f4f6c009c71446f621c243ed038d5d5153af046eae32cd9f1b55ecba1d3c119. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eda341fb-2f21-499b-9fa8-8d33ad94e6fe.json and https://artists.proofprofile.net/proofs/artist/eda341fb-2f21-499b-9fa8-8d33ad94e6fe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
あんさんぶるスターズ！ アルバムシリーズ UNDEAD
あんさんぶるスターズ！！ UNDEAD「Nightless World」 (Game Edit)
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 0xa1d78496f0237746c964e27768ea0dd8ecad2daa97ad3a9016879c2abed94bfd. 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/JPD642000446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4714dfb13da0baa9e2a1f440ee18ba3821e3174e43d7ad7f3df69237944c7d02. 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/JPD642000447.
あんさんぶるスターズ！！ UNDEAD「FORBIDDEN RAIN」 (Game Edit)
UNDEAD ✕ 紅月「PERFECTLY-IMPERFECT」 あんさんぶるスターズ！！ FUSION UNIT SERIES 05 (Instrumental)
UNDEAD ✕ 紅月「PERFECTLY-IMPERFECT」 あんさんぶるスターズ！！ FUSION UNIT SERIES 05
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957baf1764e45c1b689503ff2bb59e8ae276bd9045c2d53ab92a76770494e8c6. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPD642101064.
UNDEAD「FORBIDDEN RAIN」あんさんぶるスターズ！！ ESアイドルソング season2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c72800c8a3b0c112caeacdb3a26f91f60986f1dc6a3e842aad897743a3fe92. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:10:12Z), 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/JPD642101122.
あんさんぶるスターズ！！ UNDEAD「Sustain Memories」 (Game Edit)
UNDEAD「Sustain Memories」あんさんぶるスターズ！！ ESアイドルソング season3
あんさんぶるスターズ！！ UNDEAD「Resurrection of Soul」 (Game Edit)
あんさんぶるスターズ！！アルバムシリーズ 『TRIP』 UNDEAD
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90906f8e77171ec790c31707b4f1d4039689789d783f86e8763e858b385415c6. 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/JPD642300646.
あんさんぶるスターズ！ アルバムシリーズ UNDEAD (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957631131ddd3cc34cba977424e77e7a7761f0c682df25f40194b839bf53e67a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPD642400139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dcab26d5bf92ad74d8bc021a5a0e7304fd8ec6386cedfdacbee880fec4b56ff. 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/JPD642400143.
Valentine Eve's Nightmare (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b76efc3ed571dbb1b38f5dc48cdc1c2ef415689db6bf453b3ec2ed379407366. 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/JPD642400145.
あんさんぶるスターズ！！アルバムシリーズ 『TRIP』 UNDEAD (Instrumental)
UNDEAD「Wanderlust Sailing」あんさんぶるスターズ！！ ESアイドルソング season6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bedd9e31723170d6e8ea061d882e695873c01b4159b5889294234d2544ce7f7. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/NOEOK2596030.