O'Sullivan may refer to: People O'Sullivan family, a gaelic Irish clan O'Sullivan (surname), a family name Sullivan (surname), a variation of the O'Sullivan family name Places O'Sullivan Dam, Wa
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 0x2ea08f5a70b2afd4e6e810c5f54facdd711dceb2edf3e280223448c264b79051. 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/0579ff62-c61e-4817-85cc-1247390b9a00.json and https://artists.proofprofile.net/proofs/artist/0579ff62-c61e-4817-85cc-1247390b9a00.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 0x8995da70dd1f8531c9ac2cb2f589a54ac99797924f4bb5bd7c72075d6db07441. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX762094942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6abfe69dca964d921baedddc35128778e89ee8fc550eb2a399b90d8d3f46477. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/FR26V2056502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9655583752e31b8442b9f93a0a73e0da373591d74e1348dd1631c03c28c9ecd. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/FR96X2164604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb22182e1f1faf610c285b6a3c8032641ef10efdcf155bee5db6a7ec8efd38c0. 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/FRX202277136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b8e2f1f5736565b6df17dbd723782b81d2bc6b13f36856b6081415a2ff90e1. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/DGA062283303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164d0a5738bfd3415b6ffe7173a8995338c11cc7a413850cf9376d14ff6c4429. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/FR2X42355065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1b1a421282ccce11bf57460d3304152149340254cd37af953f96196cc1aac2. 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/FR59R2399271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6f8189553904f0ccd648caa7f5e1efb4431fb1e000bbcdae30b2e2e724ae82. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/FR10S2397977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf208e1719d000ac5ce2355bab08cf5ce3b7beb457f047650f962d70c27f637. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/DGA082297879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b8e2f1f5736565b6df17dbd723782b81d2bc6b13f36856b6081415a2ff90e1. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/DGA062283303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e28ab21ec5bec29113656d7bebfe25c4ec3cd2f1bc11b31b8e56b7af7b43f9. 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/HUA612301527.