Peyman Yazdanian (, born in 1968) is an Iranian pianist and music composer. He has written over forty pieces for solo piano and has composed for both national and foreign feature films. He wrote origi
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 0x3db62aa08693a162cd35f6d21c18816de4fd5ae21608a1c56e115b96c6a9428a. 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/50580321-d214-4f2f-9d96-be3f84d179b7.json and https://artists.proofprofile.net/proofs/artist/50580321-d214-4f2f-9d96-be3f84d179b7.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 0x6cc2b4cb1bbbab2db5d3e0348c53ea8be2687bd00c1a95bc2f0dda4a6553a103. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QM4TX1762944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3fc41bd2ca45d6aa5d11e02d0dfa626b9bfee2f611024bb9ba2bbfa71a43b90. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QM4TX1762946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8e93b16c2b1e678666e43f21c01b4a8d613a6c952df9b5c686fcf898fcd161. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QM4TX1762957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e4638ef11622b306627140eff87a95075014e5fa9d177b43d1b7accb691898. 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/QM4TX1763190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b97fd7d849fb39c57dc5593ae3fd0f4d752837887e7ff634469ce32c50f78e. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QM4TX1763192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774ec623ae30455069fd2f10b9d6eed0bec7f03c56276207c72f441f036203a3. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QM4TX1763300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74a588dd1bb2c3aaf32fc708a16e84302ab91020f4ac94f69ab77cb305ba494. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/QM4TX1763306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ab8cd28f6ea6f81ede1ca428c875ce3bb048352ec534090750395804eedabf. 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/QM4TX1763417.
La petite suite de concert "Movement ii"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19d7f66812c389452e5c56d0727f3d683eba005063b133025e85d096529305c. 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/QM4TX1763418.
La petite suite de concert "Movement III"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a279e4bedfd337b569f9ae23b6967615c89166f20c62ccf1b426ca68786e69. 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/QM4TX1763419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a8b97c0a3de726a23375a55cc79b03a144f1a7ca10dbf3ccaaa905e3f4598a. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QM4TX1763435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7eefdccc1a6a361330285d24eecc2504051156c31468133f14a389a284f714. 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/QM4TX1763987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713a38dcc10bdfde5a7be848184b88c02f0722fad86efe4108db2a7221a7b600. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QM4TX1763990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1594ccea3a069bbaffd28397dc50bcee69973fc1bb2b7d48016dc429ee5ffe3. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QM4TX1764148.
Just 6.5 (Original Motion Picture From "La loi de Téhéran")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50da1fe200a605830bd12d4a00d2a80e61e8303ce5b58bbd53932a62f3fde855. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/FR9W02100078.
Youssof Payambar (Music from the Original TV Series)
Le miroir et le regard (Live Improvisation)