upright=1.35|thumb|Dupondius depicting Lucilla Augusta Year 164 (CLXIV) was a leap year starting on Saturday of the Julian calendar. At the time, it was known as the Year of the Consulship of Macri
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 0x29671512b97e6515489ef82cc08a6fb5c424c27d099c1da0d7b5cca51bd99cdf. 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/43bff38b-cef6-4c8e-bc2d-0b9770b1a930.json and https://artists.proofprofile.net/proofs/artist/43bff38b-cef6-4c8e-bc2d-0b9770b1a930.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 0x1b80d510b96d015add926a192332c51d7687252b0fdda44e704e9795ed386618. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/JPC231400467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe304218bb817697fa450d9e0aa4513de6a43304fbfa0aa40adfe7316b75333f7. 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/JPC231400471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789be0310215bc80062c20a96ab9d3c17d2b0de7861ac7133b06f09b9f011258. 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/JPC231400461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1655b5de35264b8cbaa53f35403fd8a18c9218fcdee86dc56201f43f730dc97a. 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/JPC231400462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b80d510b96d015add926a192332c51d7687252b0fdda44e704e9795ed386618. 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/JPC231400467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755c7421bbe130b24aec15c17798fa6f05aed4da773f0382b7285db0cd62c512. 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/JPC231400473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88735b4a97bd564741a00b8d9cf2d35762db880a356416b920d42e4f548b445b. 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/JPC231800441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39cd71ce7ff0b8770c74b21b945e82557ecee8402d0d7069d4114cec642e19a9. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/JPA651804415.
Tasogare Relation CHUNITHM Original Sound Track
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73609a38b8cdce6f17a365630bbb049bc8ea5d73b3ae0e92fa8216d9a0611c18. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPX301921370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9dd9ddf19c0a5859212b696275f70f06d4ebbffc12ee1d4231e38faac732d5e. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/JPPI02302490.
音楽的同位体 裏命 1st COMPILATION ALBUM パラノーマル (vol.3 交響のパラノーマル)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904fd60244bdd2fa927575b9fc5fd11559289fd5cc8ba76f4a8acecbcec7671b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPY392300900.
Exit Tunes Presents The Best Of Gumi From Megpoid
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b2ccaf0043fc9867fe30c7c15b0b18fcb761c8fbffb9e3f8ce07a9d5db3fa8. 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/JPC231500145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3313299c7073e2a3444640daccbf7319e242a183274d9091974aad944cffadbd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPC232200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ee5dbb02db2085ca5ac39892978db21128f739a439b83baf9bbb6755171ba7. 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/JPY392200728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c4bb1665077cbb896152075d6d9e6f9828d1bcc361c7c23e349d342fca8929. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPC231300465.
Exit Tunes Presents Kamikyoku Wo Utattemita 6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6885a855b7d663c2a473e63815effa77011f9252abca14e72606471ed7719e3b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPC231200669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09913183b8df4b1c4f06d084cbfe48c93af5899dc5f8872186f7f9bbf09966b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPC231200702.
音楽的同位体 狐子 COMPILATION ALBUM イノセンス (vol.2 爛漫のイノセンス)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed8f15def60089d9cca764f6adf383afd522014f9d1aaf06b191dac9a0ba13d6. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/JPY392300891.
KAF+YOU KAFU COMPILATION ALBUM シンメトリー vol.3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945b9360606e23d5d63c2c3d20235fb7d0537704150ce222aa0e1e50e899fc66. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/JP92N2209003.
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 0xa76eddec7f52fa60182b9b5891e9c077238cabc36222589b1c673c51bdc60818. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/TCJPS2242775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3897f9e704335f65d065a67468077fc059f1582d6ae0eeaee2805ab57481d5b6. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/JPJ931800112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597e4e67a1091c7be3a89ce91606d91d96e775dcd27c5e102d8e20ef5e1e94f0. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/JPC231500739.