Sinan (Arabic: سنان sinān) is a name found in Arabic and Early Arabic, meaning spearhead. The name may also be related to the Ancient Greek name Sinon. It was used as a male given name. Etymology T
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 0x02382ea375dedb1a95e36fba61ef8ffa639be8bdd4c0c120e6a6afa55e2f2ef1. 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/6824da2f-7a87-448f-bf2f-d2ab869429ce.json and https://artists.proofprofile.net/proofs/artist/6824da2f-7a87-448f-bf2f-d2ab869429ce.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 0xb5bb9e66f56919bf6005b001283ed564dbd0107f957215a529387ab4d65d7e04. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/SE4YJ1900101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaab97995b783d4d88e26ef083d071d14ffbe689c65c66b0079094f688ee03e2. 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/SE4YJ1900301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46711b9845d7ef41ad297a83d0aa4e683aa8795a59b3307f52e35ce7a3c72eb. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:46:11Z), 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/SE6A91976840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7bd568c156300050e5c330f39af36771fc84fa8f4137adc373335212ff441b. 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/GB2DY2000604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5f6b9b67e3a9b91f27084fd62ba4a1deb00caba198ea093733462453146a6e. 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/GB2DY2000638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6aab2a10be2106c5a70a6e8d3a9c3d3fc15a2cd1a7a3fed0837aedbf1eae47. 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/GB2DY2100645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x902033e418f5cd567ea5a1f9655ed8d8f88841179317ac494165d9c3f401cf19. 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/GB2DY2100558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde06bf2b663ee8358929f1870794027c0428abd624f597cf6d7688dda5ea73b. 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/GB2DY2100812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8392af79857bedcebed0b40bb3da25f5e2184971933b8909944dcb24294a130a. 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/SE6QE2332102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84df840a089d298155d961c3576a9910e78160b4b8866585cfe7612f57fd5e90. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SEBGA2100089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd976d2c7c8dc7bcf0fccb1e03bff9e4ed9b562d10dd452abbaff522ed2cc59c. 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/SEUM71900999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea70421b98d361ed10e30a87259c377f62ab7b0d54d982f7fab71bb6f0458468. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SEVJH1904401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d98f5cd6047e878475e6145677c48253ec2542161083457d5dfb7c8452733c. 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/GB2DY2200691.