Sincerus may refer to: The Latin word for sincere or: People Sincerus, Roman Catholic Bishopric of Amelia in the fifth century Pseudonyms Samuel Adams (1722-1803) American statesman Elias Schwar
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 0x58aeb8324dda75976aa71b0a5736fc2239c09aa9da3c06b0f6b840aaf0b7bfcd. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0401ca0e-8a9c-4cf7-a16a-225aee728f76.json and https://artists.proofprofile.net/proofs/artist/0401ca0e-8a9c-4cf7-a16a-225aee728f76.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 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 0x49c23ba47a1e9637e266568a1ac9a75198c74d70fc8098610de289ed2c4b7acd. 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/AUBEC2519257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf615763b39a9cf840a0612dd1db19dfc16983d592a89d9317f9b7173a5773aad. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/AUBEC2519255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30653dcc4d09c04311e1f8e51df4a33809dfe28c285c103282da7fbcab0869e3. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/AUBEC2519256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8dd397da86c0078ab43ee76bf7c82aead882516264a6a603b59a5e36a61a96f. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/AUBEC2519258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e95b77d8e034885b5a472009cc1ee5a8f044598072507df0327e8faad186abb. 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/AUBEC2519259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe37a0bac2cfaf98f9acb9ad5a46d9bd37a3832d65e491bc9b6005a97947db1ba. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/AUBEC2525538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb107a04b379edbe99fcef675d55c626955d86b3ab8859afdce741307171d2305. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/AUBEC2525537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f7b1c1929404f1804b4dfd14b30ebb75ca3984fb54b9760ce80f0cb1fcecbb. 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/AUBEC2525535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0de7d7547fa67dbd9b5b32d676e49d676383783b2f2d3192ee3ac0ad08e0912. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/AUBEC2525536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725d50393405458b2354d8001295d14565b4b236b3b02da165f14afe50fe2202. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/AUBEC2525539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb017b9bd3bdbde8477b628da9b255cbfdd27eda49bcadb35b4e7fa8428e36597. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/AUBEC2537257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df0dd5ceb662a07db81b70fc8d4a51ad8f58d3d401b010120eb0dfba427cea7. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/AUBEC2537252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf067b610a3b50c8a345e4299d2f84f880b0a369026a2a69de476165d4a8debbb. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/AUBEC2537254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d708b0fa7cfc5bd7d236872337f5256d73db103992addfa6bbde64cb744bfe3. 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/AUBEC2537255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80be75ed701db94fa9783ca8136e27206ff3af16952aa43c47701849ecf3e155. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/AUBEC2537256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a337a60fe53766c47fd3bdf64f5e0ad079c119b3b01137e5a650af66f48079. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/AUBEC2543039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5c358f4234153b830309b9e10a6f374bc000f5312169749530065d6a760af9. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/AUBEC2543038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62fe6f9fd699d558372f4488e1112ca5c9b3aaf90e1a1cc193c76774ede17e6c. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/AUBEC2543037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcbdec98ec947875bdcc59b214e0adec5365f1d511da620b7ea9ad86da53c8f1. 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/AUBEC2543035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30515a85886c1da71647e677d62e293c39bde9591c343eab12aea2aa2b504adf. Chain 2 (Bitcoin): anchored in block 958731 (2026-07-19T12:35:36Z), 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/AUBEC2543040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6277c747f173de9dbd616ce447c66b61f8045b96b33c75697ada795aa0b18c0. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T05:30:12Z), 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/AUBEC2543041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd9a90f6193e7eef3e067c0fd90e3f7670d982cd1539495dc330d04cf09aa1e. 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/AUBEC2543042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66efd70d7466aece136f3e3c5741bf4f1ad00e450b6103bf2d1a08ed964d6ed4. 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/AUBEC2543036.