Siaman () is a village in Sojas Rud Rural District of Sojas Rud District in Khodabandeh County, Zanjan province, Iran. Demographics Population At the time of the 2006 National Census, the village's
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 0xe27f9840a720eb7fe66fd24b2498d5f819cb0455a090ea149cd5ca827c4c082f. 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/645ab48d-61ae-43de-a657-d0ee4b9e03d9.json and https://artists.proofprofile.net/proofs/artist/645ab48d-61ae-43de-a657-d0ee4b9e03d9.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 0xbc7d96e1fa76bfd989fb0140a8b5674ef908033fd63d436310838e71fb58e172. 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/QZHNC2346187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8668b813ac02d9ce9ddadc0f615ef9208fe5bb58c7467e0566d646691284bb6d. 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/QZFZ22469981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b284b3ba849fc90f2260f1c6b1bf3b3dd96a968378181c5ed23817e510eaaf4. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/NOPTR2415010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd14f03a963cb7415f017fb50aad8dbe40f2461e48aeeea3a52914430dea6c875. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/US3DF2461349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b6483d2e66ec78f97a347cf1878371874f89db8bc909554d0f04844fe1b13b. 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/GX5MX2460286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e97aa4a8b275d86d232c57e69e289ece76570572f35c7c3c6e6ed90af7d7f0a. 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/GX5MX2454837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3a98c620ae2846bf74ba35fe17a30162ed1da9756cfeedffb1e4153dbe3eaa. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/USANG2428523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f1ba39c58aab9e813b39f521672352baf5034148fafd143a894e273805a82d. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/DGA0R2453814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b1748a9620cef2e864b60ff49415dc74c52dc56eb447ce019187423a97660f. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/GXF972442747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0bd076ff05f7ca7134709d30d523f371eef27aeebc31b3f40c55bf69885c55c. 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/DGA0T2413561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a902b2cd09b653924dce7093e5cc31d0f9aedf1d7ff7c5b02fd5547ce5d40b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMANG2239595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13685e8293cf17bb9c6cd1b6baed7865fce126b560341fb71186b3e03846617. 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/US3DF2494220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c8d0ee53b1f8abf9bf4ee5eed448093087102f18e2d3a44001617b79e69aac. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/US3DF2419837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5bbfb60097f2753adfca47afa493ce925c01a6ae833835e843238c842d46f75. 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/UKZGC2500293.