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 0x4b34357a710e64a9142892fa253b388525674dca3ead58399f77bb38c75ec2cf. 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/295d3793-6c92-494d-81aa-b76457136090.json and https://artists.proofprofile.net/proofs/artist/295d3793-6c92-494d-81aa-b76457136090.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
アイファイ！リアル系アイドル・バトル
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 0xb28e38eb9aa31f1c87ddce48410bda4bacf9ba3c946f77d61508a2751186f016. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPTK01601120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058bf2ae9a873ee67a8d5e094bec6a6705d15132e4a1a9e28cbb5f3cd2ef0c18. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/JPTK01605970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413c1f679401f5dcbd5dfacbfd4a1fa03f99e8ccdcf1b6722bcd634f2a5e3c67. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/JPTK01803520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131a8ce37fd932d70eebe9fafe380ebef074a269b4373845395f72471d58e6c8. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/JPTK01905600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919aaa443c683603a5f6591e021aff6961a9e83750e790fbefd31bd7b1a576cc. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/JPTK01905590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919aaa443c683603a5f6591e021aff6961a9e83750e790fbefd31bd7b1a576cc. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/JPTK01905590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10409a3f2d5e7f0518f1c5da31d13477add029feef7a9b62364c8ff2d1b711ad. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPTK02000070.
心拍白昼夢(シンパクデイドリｰム) Type‐B
心拍白昼夢(シンパクデイドリｰム) Type‐C
心拍白昼夢(シンパクデイドリｰム) Type‐A
心拍白昼夢(シンパクデイドリーム) Type‐C
心拍白昼夢(シンパクデイドリーム) Type‐B
心拍白昼夢(シンパクデイドリーム) Type‐A
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6476070f076e8300cea9b9554e5ee8a4bfeae64e008365a544515f65d312d3dd. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPTK02010850.
心拍白昼夢（シンパクデイドリーム）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce618683c1a10f33b3e4b2a1078c03d21a66b8c8882116e9ed708614d55a7d2. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/JPTK02100120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7ce0929661d6e422bbbed4d2d4b9cf4de828f43663770f889aa4f46b236795. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPTK02100080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c766a4305e8c5bacfd84808525b9334a09aebf50d16040f5388f5d51f42f06b. 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/JPTK02100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf934ae72502f103558c4b6fcddd229f4178bf9c2e2d4e501cddc81d2f34abd. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPTK02100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f5938203484296ed048d35c33f6ed0d05281f7e81c08a1cc893d583ca35450. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/JPTK02104270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f5c4771cf8b2960d30e2ed6040291b8d37f25e0c33e7fefac846a4f4424034. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/JPTK02201450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58f7ae5301337184ed87824b1d76fe891b0b7f0330db4761abfd7515dc0b693. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPTK02207990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc53538aa6def1b0c1ee2651554deee14e79fe7f077de2e22fb1043439b83123. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/JPTK02301840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12046d70a547ef7142709ba849b8194cd669e4eb182596bc600b7e9ef20c849. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/JPTK02301920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94bb4bbedb7975425416fa20299971c34237c5625b932169812e53bf3fadd1a4. 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/JPTK02306240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3baabb4336f42b92282d80ab23d1a8d46cebe8bcdf8cb2a954976a656943d0f2. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/JPTK02500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0fbade5947ed37e2576c6b1c0b8ecf4e213c7448da09d9dc54fb8b09a7ad23. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/JPTK02500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815c2a1186d1e1890461df227ed224bc66a518679b4d03b122da95535fe1dd78. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/JPTK02500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455af3881348dd46b1e6d1df33f3315c0a5e7a45c10ec96af0523a9743032249. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/JPTK02500070.
シン・フェスティヴ ‐大怪獣祭(しなさい)-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f803fb7873e8c7d4bd423da448e63c4d2531a7762dda3f02003474505e5630. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/JPTK02500090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3baabb4336f42b92282d80ab23d1a8d46cebe8bcdf8cb2a954976a656943d0f2. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/JPTK02500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0fbade5947ed37e2576c6b1c0b8ecf4e213c7448da09d9dc54fb8b09a7ad23. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/JPTK02500020.