Boj or BOJ may refer to: Boj (beverage), a popular fermented beverage in Guatemala Bank of Japan, central bank of Japan Boj (Slovenia), Yugoslav nationalist organization Boj (TV series), animated
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 0xbe955898c7c92349a00a8f0fb725710857203c3491399418ffd7577c0debf1f2. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/10398436-b3c5-48e3-bb4e-7b766af97631.json and https://artists.proofprofile.net/proofs/artist/10398436-b3c5-48e3-bb4e-7b766af97631.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 0x4493fd229e01a3a5f3ac785fb78f7e4765684a8c5fff695527a204e357cfa774. 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/UK43Q1907266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb25a68a0f48b0f222b92a261a5ef6cc69cf145f3875aa714a9908eb86dbf140. 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/GBX722100391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150d0d390b580955a6764c35a070de8c1348e4e82bd2235d774fb0821b8b44a7. 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/GBX722300508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737f07a918439a92e63a5981aef7caa2e48e3f12479d313bb9bf16af3e1af448. 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/GBX722300502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64428e6ac2bfe51f783d5c6c2b9474bdb3a0e49119e67d20c429fcc83c31aa88. 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/QZAKB2354143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b22c93b8a2bdc79dedd76a6d3d3b43a3abd22099686fba62deb091511bab138. 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/GBX722400254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a5fd05c668363678a5c4f0c8c91f27084974308f1de4d41b6a683a40693883. 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/GBUM72104340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f6f956736365e2fcc1ddddd6cff2e2daf6eda1f4b46354bf954ae95d3e418d. 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/QM6P42321091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45edab30ab918dc900280e9b32b191328e8eb3aec3b1217e482e7efd949d929c. 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/USUM72317961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d4032eebd94f7b28eab2ed7f70b83936b125724033be83eccf9ea6bf9e5acc. 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/QZ2GW1800324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29658b60001494d7b4624e7406ad8318563ed536a108cb59e0d12faba3503382. 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/GX3Q92375691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64428e6ac2bfe51f783d5c6c2b9474bdb3a0e49119e67d20c429fcc83c31aa88. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZAKB2354143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f6f956736365e2fcc1ddddd6cff2e2daf6eda1f4b46354bf954ae95d3e418d. 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/QM6P42321091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29658b60001494d7b4624e7406ad8318563ed536a108cb59e0d12faba3503382. 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/GX3Q92375691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9dc34d9d2a9baf6ea7fd2211ef95c0c5c1398005caee3d10f3831c9cf156b50. 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/QZNJW2409912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba9d589112632480d2643d3a15d5181945cde270b159e2410a58c5b812ac168. 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/GBX722200075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5355b02ed3dd46068fca0b4ea99c2c7cf40c3a3f091f5e9f671e6a85e2ed2bb. 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/GBX722200077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2254c0d6e7009395b1307601f9352f3878e8fb15d5c3e1242e8cb066c5c1978b. 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/QZS7J2263291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69596627e68349917e3b4117febca676e072f65313f347320495c1937a487d89. 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/QZ2GW1900151.