Choji or Chōji may refer to: People , Japanese sport shooter , Japanese Nippon Professional Baseball pitcher , Japanese weightlifter Sambo Choji, Nigerian football striker Izakaya Chōji, Japanese
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 0x309a4e288858c66ad2347986dc087934fecc76c7a2aa80956d3d65aacfe060b3. 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/b052e7d2-1aee-4929-875d-e99465bb896d.json and https://artists.proofprofile.net/proofs/artist/b052e7d2-1aee-4929-875d-e99465bb896d.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 0x0103f0e319baa7ef1f6347b5b36dcc95af08cfa1121ba6727c0ea0db9e3eb7f2. 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/BX5EU2200074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88561ed2d7aac01461e6af8964c90e932f20419d40d055a288bcf0d164aae7e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZNJX2489461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae82c3f93397749077279e417041165ce674cdf955d25df6d257699ada191fd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZNJX2479665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380efd03664914e2b75e5943943c549997b573cfed0fc919eaa7e81c1c0c356a. 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/QZ5AB2435795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0252cbad8ea2ea058142a20dd17977d029f8dde1ce5746141429d93e94ef64. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BKDP52300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae82c3f93397749077279e417041165ce674cdf955d25df6d257699ada191fd. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZNJX2479665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380efd03664914e2b75e5943943c549997b573cfed0fc919eaa7e81c1c0c356a. 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/QZ5AB2435795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8adb671fed7f0d0dd2feb8aa25aaf2f9120f8afeb75f6f6f00da5429590496. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZW9K2381209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee3245a68667552aff0a5839e47d2e0adc131f42c23a70cc0fd68d0d5704aba. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BX5EU2100076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c7d3cf1651f862a80703805bb2674450b8b30555c96b9af63527696bcda83b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BR5TG2101852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b6aefcec40abbf15183302c84738887c2fb69f520747b690ddbfc280fbbfeb. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BCDFI2100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9411b0dfd2430b9d97b83cf12b09868e8e8bbd1323d85c9d1363d5301d8cd64d. 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/BX5EU2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81226405d26c42c94c874f6c25c09f672afd1f2e5341c39a5e059082d5511aa7. 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/QZGLM1901195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed8df49cd0eaa5da359a2e8022f84416217d8d2d1b957888d3b193814513ff9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZGLS1948265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40f8578a6aa5ffa2f66dff55c4adceae9c6d8904ba85771fe3d612a22ffa99e. 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/BKNNO2200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844339038aca29ba9a13b9c95e58d83a57087c7f0df1b6174a2dcfb62659fb7a. 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/QZNJX2024986.