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 0x005b57aca9f2b14e41a5c9d6b36043316870cc8c8104e4417d1ef602d4a47704. 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/fa7f5d45-31d9-4d96-aff1-9580191d9ac2.json and https://artists.proofprofile.net/proofs/artist/fa7f5d45-31d9-4d96-aff1-9580191d9ac2.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 0x81d7c883c3dca61212a9fe2c5af0b6f038e3303d4d33b1155477a1e6aff5b96d. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:00:48Z), 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/JP92N2309267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1158d8b1c96b2561f637b141c771e6cd0feca5c1092fdbe423840830f36b755e. 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/JP92N2338724.
スウィートリヴェンジは悪魔でも - UMBG
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912200d1fffdb3e5d6d3a22305450254a31ad24643362112f3a910191491108a. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/JP92N2338725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ddbfe3eb625a9ea7b517e523a649b0ad15958654297e2ee28f1758fe8095b8d. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/JP92N2338726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568b39b4c9f14176592d4ce101ce4aa18de2c57555e06c4a0f208a0d60378c95. 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/JP92N2338727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4108d67e3a0cb346253825855e7af6dddfd33d61b44f7b74f4f80c1d8f740595. 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/JP92N2338728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90e2a2a016bf858c648ce4c45f3396889206c444211cd00d89e5d78a77801c8. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:57:26Z), 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/JP92N2342674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e9a3dbcd1582b35b02691e8ca133a4f88c510ff00d7a60c5d3ed91e59bb486. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/JP92N2342125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c1b74341f2a513a9ab2c6d2924b108373ac1aef1a47e15df11f78a58d540f1. 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/JP92N2342675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d33044fd6752e08b2042f0a4b1b51d8e8af9e3880e5a26b0477ea9e52ff5bf. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:10:35Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JP92N2342676.
スランバーワンダーランドへようこそ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03f6e697eaac24db9025503a90f86d620db307146d30522dda2bf7e03523372. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/JPCO02406340.
スランバーワンダーランドへようこそ / 天使にマーチンを
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a30f544fde38adab359d2384d8a4a166ff8a681b3a9652804c17dd57bd549f. 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/JPCO02410280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af48a9fd67d50d1fdc4c7b3d531403c36d077527580547c55ff9a4cb45bbe87. 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/JPCO02410270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146ac74d5ca86c3ca53dde0b4be64596f41f9bf96da79e3fdf89bbd2303e877c. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:16:51Z), 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/JPCO02410300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a04e8f42112b6d164c9a0992f594ee0e3675ab2a06b58e4a20b03d7c0c0444c. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:27:49Z), 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/JPCO02410310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c53f4411007cee3018a871a8b19b406e12a2e5aa5f37eee93d8289d0f34eda. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPCO02431310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc53822108a4485a6c5f95667c4820771aa1c577b9a7573e216eaa4f0676237e. 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/JPCO02435310.
ムテキノユウエンチ / ドラゴンなんだって / ウチは泣きそーです
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8a7dfaeb8aed2f3a5b9d0d2a6b2b4226babccfeaa3c9458887c0f29729a609. 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/JPCO02438400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c53f4411007cee3018a871a8b19b406e12a2e5aa5f37eee93d8289d0f34eda. 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/JPCO02431310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc53822108a4485a6c5f95667c4820771aa1c577b9a7573e216eaa4f0676237e. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPCO02435310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1523fe196461bb2f5f1abb7ef90e2aa6c137a104d3d2fa3ad4e21c12aec24cbb. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/JPCO02438420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea08e0fa06e8850fd9cc6c3513a5d2dede7206704f01e82b8901533b9de2ecf. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/JPCO02438440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda71e45cc43e96207b5ed4cd67da3394114c188665b5872858c4f20dc218eacf. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCJPH2519727.
Lolita Born in The Countryside (feat. Kato Rihona)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1b35bf0d40e2bcf4415bf34ccc7a781159e47cc83427ac8de994a203a3dd53. 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/TCJPH2572904.
ロリータ田舎に生まれ (feat. 加藤里保菜)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39de0139c875eaab7755796cf1647fdb6315cbb69a76fa78db6c082669c0c8b3. 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/JPG102500535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8dedd339555bf4bc083f708f43ce0793e6d882b8f213dd34eb11321ab13221f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:57:17Z), 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/TCJPA2427170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8fe463dc4898e81351da6a441075cb44c27ae199651c2ae078f929c0e8a7df. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JP92A2506725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8fe463dc4898e81351da6a441075cb44c27ae199651c2ae078f929c0e8a7df. 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/JP92A2506725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfcab7745b7ed4cb6ab5208d5bd90d92c0633bc9195534e70944965ab4d3c27c. 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/TCJPK2505052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab30b276bdced5470adbd556146418113098f839414c33fcf4182f1d9f51cee. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:43:42Z), 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/JP92N2526988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4bd62a0afc38575062c0e227530e0777ecc3a8145d51c6769f8b7fa6185543. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/TCJPK2505096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda71e45cc43e96207b5ed4cd67da3394114c188665b5872858c4f20dc218eacf. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-21T08:50:51Z), 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/TCJPH2519727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd03886a692e63f82f817735ee7974387a4c2f2e14be0a9cadff753eedaeaf5f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCJPK2505180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77aa5cec24d72e8c3c48ce5d955ff93d35c8f09c5dff02bb4f051cf5e1406c3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCJPK2505260.