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 0x5bb16ed1c58b1f270a23c6acd4f6573ba5bdb8ce9699befc05ebb3acf6d6addd. 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/a9b41575-2bab-483e-8eeb-8f5c3c921309.json and https://artists.proofprofile.net/proofs/artist/a9b41575-2bab-483e-8eeb-8f5c3c921309.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 0x3f00cb98b2270aa6ff32a8872a4e29ebaf159953d82d9d1cd476c66b7075ae41. 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/JPI100700451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb9463edc5b72048599cdf89ff53d1cf824642379a5ce0c1b9671424b23cd6d. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:12:20Z), 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/JPI100701234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cddbdb9f59f4559112d8587e0f60f2034d909a8061e3fcebaef7fcb6322163b. 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/JPI100800026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f00cb98b2270aa6ff32a8872a4e29ebaf159953d82d9d1cd476c66b7075ae41. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/JPI100700451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f38a3bc5f7ca5cc1cda2948d1394de454ae3e34b43ebc23141441f1fb2ea92. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPI101001012.
『猛獣使いと王子様』&『猛獣使いと王子様 〜Snow Bride〜』 Songs Collection
星が永遠を照らしてる / 美しい地球を知る者よ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa779d649844c7cc1f3bad25642e95fda68a25241bc435bda618f84ab16a5a586. 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/JPI101200901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd16748d739f91183f3a3cbc04bb17796a5a42fca9693939365ead40fc8437b. 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/JPI101200900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f56490025d82ab5da2d335364f6cc45ae8db4c46e33e6bcdf0a64ce6b0a4b79. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/JPI101201409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f38a3bc5f7ca5cc1cda2948d1394de454ae3e34b43ebc23141441f1fb2ea92. 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/JPI101001012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd16748d739f91183f3a3cbc04bb17796a5a42fca9693939365ead40fc8437b. 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/JPI101200900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40fda687e56a84a7d1eaa931d6c6aeebfcad46ee621a533f6820617a4bae0ad. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPI101700200.
どんな星空よりも、どんな思い出よりも
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8675dfa579efc1712cd7a23055decc494b5a617a33006d090da08d1c3307241. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:05:42Z), 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/JPI102100877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cadca53583dc2a636fd2ddbb10830473aaef9035efbf86ca3c0a161f07073dc. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI102102438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ec333f31833f2ded949742dfb0ee5ef6b7cc391238ef0a555fe29f021099df. 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/JPI102102445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bad85bd889aa778d7189422f451da79e7272b8100417802f935b98df1adc5ba. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPU902301137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103338fa737cdd887a8165449a42ab5e547095ef3369172892c985b6fc4f4664. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPI101800640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0a8d3483e98ba8503c4cf19bc4897e1213164d00c2466f056dc09f5e06c791. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPI101800641.
VIOLET EVERGARDEN VOCAL ALBUM Song letters
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dafb2b9d9464f4b6930dca111985ca6d43ea389b8721a5bc240440d7a6ce348. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/JPI101800788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216babc1f3483e80fd79cf0be7731aeb1c1beead10f30fd7798ae2349653b636. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPI101800792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8657ad7feae0ca04f9751b3ca88e31f6332cf1b71e2de88842f1541289f5cc64. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPI101800794.