Essed may refer to: Surname Djai Essed (born 1998), St Maartener footballer Frank Essed (1919-1988), Surinamese forest scientist and politician Philomena Essed (born 1955), Surinamese-Dutch Prof
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 0xf3c09ea4fec364b338072257c78e3e77b3eb7ad0abf1b1474205e1d0eb6d3bef. 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/0de3e941-0274-4947-ac43-63c1ff942008.json and https://artists.proofprofile.net/proofs/artist/0de3e941-0274-4947-ac43-63c1ff942008.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 0xc22642c97a73c24d4025e30aa2086b898a04b6a971106916ab24be2d0634b859. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/NL2QC2000137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517be1e8a83e85b6c802e4a8c88f1e8e4a6773d2cf8244859228122b05c37a85. 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/AUDCB1702454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4467a76888fb28fe730aba465a0e9c90eb0df93d8831025872a67c2a0f0e129. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/GBKQU2457154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295a89f83e010bb9d98a0b72872e4d9a12d2bad36be4697544a3ae829a6042c2. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:53:32Z), 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/DEH742500763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd530b35fbbf3b7e15cbcfab935ace374aa8b977585f8da257fbe0a650530ff. 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/GBKQU2517788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a44a4a50a41b2bd5c371a2a5f2b10021f91362f960b9ebe4960e9cbd21dafc. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:34:46Z), 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/USUG12404622.