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 0x6cd904cfed11ab41ca15732867766f2641bd38fcfe4444bf4208a3272810c0b1. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1bf4fc96-d353-4e76-bec9-596def11265b.json and https://artists.proofprofile.net/proofs/artist/1bf4fc96-d353-4e76-bec9-596def11265b.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93ac1ea43b0ec29dfa6142b353580723051c6ddaa4a846bda10340d9a004418. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:24:20Z), 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/JPWP00800742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374952a1e51f3abb437b6535b686e4ce953583d53ba4ca5267d17abb1df59069. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPWP01070217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2efa1315f541668fdc6e9808ac1577137700ade1258c5751a5c6f08b5bdd788. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPWP00971245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c435a64be831e32ca0d8f63e626a1fbe527ab4816d7555d73b057d8deec138. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T21:00:32Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPWP01070270.
私を必要としてくれる人がいます
馬場俊英EP2〜犬はライオンになりたくない
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d55dbffc789a391df2067d75a19e815a25731e84d3738535425fbf6614d11f6. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPWP01271412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a27d57223d3d9023a5bfa62e496215e0d020474abfa91525a0ca6bb1417a91. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPFL00600340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052c7fc76671c83964ee48644e78007058f86d70aabb227fbbf330643809ca5e. 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/JPFL00600350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b38a2fb24edb4d14d6242ffd13187ff74b5dcc3904e118997286e2dfcf364f8. 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/JPFL00502770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88fe46c0faf580b62929302d67d04243aed23e12e8c1400a461c534cba9f9167. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPFL00600380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf7a1800ca1ca71355028a8594182981ba4e5ae2188cc87b67d0c1314f48a01. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/JPFL00600410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1c610d2d4a22781ea83b086f10ec58174bd409fc58d5ede1ceb8bc6118f5c0. Chain 2 (Bitcoin): anchored in block 957661 (2026-07-12T05:37:10Z), 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/JPFL00600430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1074cecbf91870d7e6ff1956d99e8b5ee7979cc8b93e36b649e11efa20a63b7. 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/JPFL00501360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f386a65180cb0886fc5093b7af25e7901fd6520ec062ed5892f591ef47a4ad0. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/JPFL00701360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fda649a8e4c93fa2ea7b2a8ab249b0a35a02a62f0a6e04ecf747e2994fe4566. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/JPWP01471202.
屋根裏部屋の歌 〜 ACOUSTIC SELF COVER COLLECTION
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38084c85ea7ed82e102a0a0cb3967be5ba6a5b664a5db07391f924db4b688a1f. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/JP92N2519218.