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 0xc8e279f90bf93b931bb51e970ab70d01a3856661ac379e2139551d530c78301c. 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/73e2d31b-8e85-40af-8796-9add77262104.json and https://artists.proofprofile.net/proofs/artist/73e2d31b-8e85-40af-8796-9add77262104.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
グッド・モーニング・マイ・ディアレスト・ロボット
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 0x1aad55a5d446f8f8532f282d9b84b3de16abecb0b54f1e6a99e7f481a500dda0. 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/JPS801912230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a8ec2466ea8e15e6302af4f8aedb0ee8f02c5f4c5c96836d8d9944a4ee2e89. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPS801912231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575e10e81f474c848d18ca03c332a5dc2dd7aa39bc08a9b4b07f2cb84c56c782. 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/JPS801912232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db64e206a7d3f58d907a12e1827f36c53e5c9485c2feaad8ae156799927b0a2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPS801912233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705d932adc7990e08bb965085748b47a1f94978d5b961342788033039302098f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPS801912236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7767514de44861add27fd7086ac80693dabef337367a91cfe77104715cb0fd26. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:24:51Z), 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/JPS801912237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139b16fe1f1925cb9dc6738872eca883a2470e899e1f852237cd6533c6c1b4d5. 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/JPS801912238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aee1c6dea78af79be616096b304dcf08499ccf1c7ae5eae2490d23ad99e3fa5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPS801912239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca23bc38d8732ae6d520171d8efad4adc50b5546e2f37f5874e142185804cb04. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPS801912242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58cddf212ae1ae4f7daa388010e312495803d0a53e389a2fcf97141f6ff144fb. 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/JPS801943551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915df4409ead334f5e8152f8474e192918df440b01bd8bf74fa8b5d9d978da94. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/JPS801955491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5821646466f2f3ebde93ee70e4022bc710f2f40ad0bdac06c6fbfe0ca87da2e. 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/JPS801965029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b62e4db11a8fcbad45fe9cef07aac7719fcb17dbd30c11687a7813cba63279. 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/JPS802351215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70bb9bb025e2a5a4a12ffe4974be3c101e02e87e5a4d341586ea31b04571127. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:36:51Z), 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/JPS802351216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9220c6eb1f1c4542b7f59a8434fbab0da2e7e06d4c8b8cce6f567f9e7eed3c. 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/JPS802351218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8a466d0a93410069cd52dfbfb26a6261a6efa94d45de0233dece93b3a5d88c. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T16:32:22Z), 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/JPS802351219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e7f5930ef921cd1e408a35e64284ef1ad848d9d453ef99f70e53ef26ff96d0. 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/JPS802351222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4de93ee63f0e76a30aa836604ce0cdc330b6152b339a68c929aaff2619da22. 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/JPS802353233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0ee40fee8dfa1023d00c66d12db34ea776939264c227cdd5456b5e1838c574. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/JP92J2401118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc983f5666ff29ab88dc54c55facd947ba365dae852968f91b41174bb88959bc. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:28:21Z), 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/JP92J2401119.
Arcaea Sound Collection: Memories of Myth
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7ca9622917a3c17071e0995901192a027b8b16611fc0d41724f8051b914922. 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/TCAHI2357229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a710182f626bd4ca9abae3e17089f6d7d157c0c46c52f99a7c5ec9c5481ff1c. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:49:41Z), 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/GX8LE2485512.