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 0x0ca36a8e0e95381bed90da4b2214650d8795cfd330df78483d66937cb8aa5ccb. Chain 2 (Bitcoin): anchored in block 953701 (2026-06-14T22:16:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/75c22bae-0a66-4404-8af7-aa92bdf107aa.json and https://artists.proofprofile.net/proofs/artist/75c22bae-0a66-4404-8af7-aa92bdf107aa.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
THE DEADLY SOUND feat. CHEHON, NATURAL WEAPON, HISATOMI, APOLLO, DIZZLE
ALL or NOTHING feat. CHEHON,HISATOMI,NATURAL WEAPON,APOLLO,DIZZLE,RAY
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 0x7657e0cc8ae5a5a624364940383a156b22e9e00c393511c22d92c2cd9d083b24. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVP01509602 — a six-check JSON result.
僕らは歌を唄うグループでは、ありません！vol.1 ～楽をしたけりゃ苦もウェルカム～
止まらない俺たちのBIG DELIGHT feat.KENTY GROSS&NATURAL WEAPON
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f38beec19ec671c9c48c646cf182028d2ea83b8fb416ed3391af9335667179. 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/JPVP01604402 — a six-check JSON result.
OUTTA CONTROL feat. APOLLO, BIG BEAR, HI-KING TAKASE, HISATOMI, KIRA, NATURAL WEAPON, RAM HEAD, RAY
吾輩はナチュラル・ハイである。feat.APOLLO, CHEHON, HISATOMI, NATURAL WEAPON, RYO the SKYWALKER
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713af77b5e030eb1606dec044107c29af15176eb166d8b5afa7d038639c75150. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVP01806501 — a six-check JSON result.
BRAND NEW DAY feat. MUNEHIRO,KENTY GROSS,HISATOMI
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8019edb5176c135837d0deb2aa2f6ad8aa056767c1cdf97018499cd55c239ec6. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVP01811101 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001505154c2252f66cda32a3db749d4314828a71eadfc82b5d0c69c4ab951829. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/JPVP01811102 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22a146d956d59d20035aafb5037519c2edc9d292b6ba7a9c2f36b5e209506eb. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVP01811103 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82ed04e1eaf6f00ef3f20bf8a1f801540f0026962c0c2b1239e7e6a5a05fad5. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/JPVP01811104 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24d99c55f72ec44980a4dc586403def42df6123b3ee27b6f67a925c9400a1d3. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPVP01811106 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a4bcf84145dd8d97dbc2dd1bfaaa720e3f272f09c71325b5c36cd7aeeaaae0. 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/JPVP01811108 — a six-check JSON result.