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 0x6a130eea444f312adb6ee205141461ba5464f3b39a60dc152fdbf7d2c5a11553. 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/72e198ee-8727-42ef-8cfd-06a1b894b78f.json and https://artists.proofprofile.net/proofs/artist/72e198ee-8727-42ef-8cfd-06a1b894b78f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Combat Mecha Xabungle Original Motion Picture Soundtrack Vol.2
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 0xf0aaeffc210decd58571198e28920ac1f897c44baca272a943e60a082e84a7cb. 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/JPKI08280654.
「機動戦士ガンダム0083 STARDUST MEMORY」主題歌 Evergreen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa655a6659ed68f5d32f10b5f80f011fb18ce531c7ffeb197be38a9b1a818fe2. 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/JPVI09121800.
Mio 5th EP Album 'My Time,My Music,My Self Part. II'
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a3e4129f4bbfd5e8fcf77456fe42310165126b39d6b28dcd18c96d4c5472a8. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/JPG750900829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810f4a6a2636649722926028605ab7ca0fe6ac669e44de71a8467fca8e15352c. 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/JPG750900830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba7fd75439cc047972aa377925adaab303799190ba0d099d2f1569f492cb08e. 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/JPG750900831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b845932ff4bc1d59f0b10e9cbe1b7bed6bf4329aba5945def9948a5866f0cab. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/JP92Q2423174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b865c4955e7d687d590585ecc4e36ebe79a63b35eb606468acc5efe5b1aac6. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/JP92Q2423175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe79744071a70433352dfc6bbb0ed784457c65cf554d99fa1956c4b6b4d7a330. 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/JP92Q2423176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd186ef48aa2b8fcdad14a290da70dec0e3730a16a86712357a9dd31d0f69f096. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T14:12:28Z), 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/JP92Q2423177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1d42ed405e103aa3599e793ad9723e7e4f9f07fd7b239c7b7c8a4b0f06e783. 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/JP92Q2423178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa47d91e0aa37aea88f6772818e49f682fb5eac0fafead77acddcc7b8f2f2ba. 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/JP92Q2423179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0708fe0bc1380d604e81f507e4cac7ebf6247b62d247fd4f59e3542da83ce6. 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/JP92Q2423180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0134addd745f8b90925828142162e7cf22668fbee99832e110e0346bb4db3e8. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/JP92Q2423257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b9e7a6279e10a86d5dbc58c76eb0c74f42f0d3d5c23a735da0ba642824efcf. 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/JP92Q2423259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa7f66a1cce99dcd745d77412d8973616cebe4b4bfa4cfb5d3ce8a8d46ac8fa. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/JP92Q2423260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8efd782298078a298daa0de3395feb12aea5be8c3df9383301037d61ea429547. 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/JP92Q2423262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe8783091d871576cdb9ac8ea75457e00766ceb42232cc655f9cba53f663f8e. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/JP92Q2423263.