Nexus is a Latin word for connection, usually where multiple elements meet. It may refer to: Arts, entertainment, and media Fictional entities Nexus, a fictional place in the TV series Charmed (bro
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 0x19a2342b72d6b3fb4c50bd766791c83fc3567f49375e1f9ba8d139d6378be19b. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eaa0a17e-3615-43ca-9662-e6cd1f1a698a.json and https://artists.proofprofile.net/proofs/artist/eaa0a17e-3615-43ca-9662-e6cd1f1a698a.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 0xbd062283d43d85ed80854095556e6ac519ace53250acd10a70d385e5b992e866. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/ITFDB2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fadf6cf73aa62d8f3da740a52489d7fa338450b97adde77c533e97c371d3cca. 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/ITFDB2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca258b7808e7a0de94457c43882a73c4ea29714662d9d6c531c205c5ef5d2ed. 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/ITFDB2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5752a44bc27f202aa711021824dc21d01fe976fb32c19d8e7fd57b135f5b30. 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/ITFDB2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4fe8cd58ae958305aca68a6d5edd38962d9aa82d411b9812282cd5f5089b1c. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/ITFDB2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c41d83b9d774bb9bb6c188d216b2e49f6890cfbd4bdf6ca5260822849d4eae3. 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/ITFDB2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b62db6fabffb96deef84f2103c13ed63447f0f23a317108bfc4b0ba8eaf6131. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/ITFDB2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f39608e1858e0bf9d7af3d4892efeb99626da362a03d008dd179528ec59665. 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/ITFDB2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3837ef5524514a3a3276a6ad5ecb0ef49f031216dbe71eb97e6bc85d6606376f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ITFDB2500001.