thumb|250px|The first individual alkaloid, morphine, was isolated in 1804 from the opium poppy (Papaver somniferum). Alkaloids are a broad class of naturally occurring organic compounds that contain
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 0xee35f3d2fd721573c7dea5a7580f0bb87a5a65505be735ad8e76ca911dd6c90e. 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/62f4a3a9-a050-489f-9a7f-173f3f9391b9.json and https://artists.proofprofile.net/proofs/artist/62f4a3a9-a050-489f-9a7f-173f3f9391b9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
あんさんぶるスターズ！！ ユニットソング ALKALOID
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 0x06159559117f506c2571e4fd36734a88a2d316d9f8a960990f505f84f471d4e7. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/JPD641900587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95677df3c80079d175fbdd123e6c31b82e5089ed89252667fb9283f021718600. 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/JPD641900588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3108ec18a47fe1fe93f19079bdb307264ba2411d8024d66b978a5ad05e85e189. 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/JPD641900589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e41336e10ac953a9a7ea1ce73f3706627b73092170501d30a3fd681434dc1c. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/JPD642000441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b0e4c887ac0ccec504564f4de55eefe8eb132076866852fecaa18f8020cc6c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/JPD642000442.
ALKALOID「Believe 4 leaves」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 0x94d6831fdf84a368dc055c05a6e31036cf0cd1f9ad8f74a20eabca7b234aa9f3. 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/JPD642200031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065a5dc028b3266ddbd7c1f65f0f8da900a830c43d8215749d489fea9202b5ab. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/JPD642200032.
ALKALOID「VERMILION」あんさんぶるスターズ！！ ESアイドルソング season3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x777a3b58bf75e5423d737aa8cf469a3d86785abe0fa1bdd2d3772f0a51501018. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/JPD642200315.
あんさんぶるスターズ！！アルバムシリーズ 『TRIP』 ALKALOID
Fragile (feat. Akito Shinonome & Toya Aoyagi) [Cover]