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 0x2c581d74f4a1aa657a91045da442fe6d0abd193f217757c4ddb9dae9a23b65df. 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/63986338-ab5a-4975-9200-aa0ac88a9f4e.json and https://artists.proofprofile.net/proofs/artist/63986338-ab5a-4975-9200-aa0ac88a9f4e.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 0x65f3f5ef242e4715efae64ae319d0fbde2b2fb4dfc87dfd80623782558b33f09. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/BGA561500084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f967ff9bddeed34b17d205e232b6c8adec9115e76bd46cd3c06d1ccf3a781e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BGA561800034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9dc0cc2e738e9923d0ae7e901c78812c42bb3c9c0e65faaf87bb82289d3c86c. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/BGA561900056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59545516c6224165804956bec7e785fd3ac4f5368d4147a5d40fe03a6205961. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/DGA0R2422482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db6f0436a0b0bb5d84dbd5ebbc010d91955d9edf9c5e4173148a085b9b32433. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/BGA562200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b71352d3c368e8b4a1d2ca4d72f237df8a40de5f3fded2ee8714e73be18b35. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/BGA562200059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7775d1ee2cf5fdcde3fc6fa40846eab686aab86cc5d0c4ab57db261bffd45129. 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/BGA562200110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2fb1ef07201c1111dceb5d579c524b6bae48d7a93ea294587a56725a3764a0. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/DGA0R2420549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9e749837a465f258d19bdb7fa66db28bcc2d7583fbc0e121f1f969d698d9e4. 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/BGA562100027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16e60c70e730678bd84e7669180b1809011d34be65027b8e93f375de4d06d35. 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/BGA561900050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc789e077335ffb3aa6ee673223395be10476f214831860409020fb2086babb0f. 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/BGA562100031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2747b34495eb6530708df3619f0d70aa60bf60bbbdc567548e0df521c20245. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BGA562300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a244136e0eb4672aec7a433c681816bc1ca9b84ba73ba63045ee40f817c0e8. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BGA562300058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349e20236cf30e2f07510cb5b5924175ffd219dfab9768794737803b3e3b435f. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/BGA562400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a99e355d56a0d05b380a96cd31544f39f59d905f8db106acdcbf80f4380c377. 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/BGA562500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7128e9ae78d311a1b8f383be25f7df81c09002d96988b0cbe41d021c7bb22bd1. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/BGA562500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c11f94f2fcb145b5fc7646937dbff70368f89206dd65ef1b2d0da6b2f03cc75. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/BGA562500030.