thumb|Persian vocalist Mahsa Vahdat 2018 Mahsa Vahdat (in Persian مهسا وحدت) (born 29 October 1973, Tehran, Iran) is a Persian classical and world music singer. Mahsa Vahdat's music style is contemp
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3fd5046d87776d2193d7f3b9e8ca71f84930f8de29ebd38794b8d13bb4d383. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/460ebe8d-a18f-45dd-a166-4b99e3f453b2.json and https://artists.proofprofile.net/proofs/artist/460ebe8d-a18f-45dd-a166-4b99e3f453b2.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d416a9bea7730b9bdc4544d144637d4cf8168dbe11e019809ab36dbcfc6e465. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:53:26Z), 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/USAKS0800052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a996d291b4a1e4913a81da03b36885e74835d544844b1b5f853afab045989b. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/USAKS0800054.
Scent of Reunion - Love Duets Across Civilizations
Love Duets Across Civilizations - Scent of Reunion
Scent of Reunion: Love Duets Across Civilizations
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd0a493ff763ce132eb277ae51aa42a8ff16ec943b40cbadcf9074f1926d8b8. Chain 2 (Bitcoin): anchored in block 957526 (2026-07-11T06:03:28Z), 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/USAKS0900150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9968df111403c483bb0249b1792dfe1d67ca146f41d6879d1f074a88dca6ff5b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/NOFKF1201060.
A Deeper Tone of Longing: Love Duets Across Civilizations
My Ruthless Companion (feat. Mahsa Vahdat, Marjan Vahdat)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc480d65e378de80fcb7279c0554c2cf77e5c22c654ee0c3de3b9b2cafc1b94a9. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USAKS1900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96073f8740e846855a3a2cabc3cc7bd9fdbac6506e81372929eb685ffe716b7d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USAKS1900021.
The Color of Moonlight (feat. Mahsa Vahdat)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4801060f9d60ed77137e930274deaee5de80e1fda9d869ce5d91b00649543c4e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USAKS1900025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b8d121cb195b2327feb9a152b592fe21a6e35dcb9213d159d3e1edf60f5fdf. 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/TR0331610642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8c7f726fc6c3d3aca00e3b536380c919b9a15e3124d5e47ba30e3bfb8b2071. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TR0331610651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5310f76453dbc876eea802f757b886298b564db7da1b6bb7b345c7c4001b4c92. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/TR0331610652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe022a7a172635296baf65f7ddd53fe1601f70369e71d38dabbf34a26c253b644. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TR0331610653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f2a108fe73888c8bd1a8af24ecacf42a41a49a6701159e776fa3ac359bee3c. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/USAKS1900014.
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 0x49c906354ba552bdfd9d6f62ad1a119c7bfd6b4d34ea89a472ee2c7faca2705e. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USAKS1900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6924d51a93219511a33691d39b532a8819f76e68e5a473bfcb0ef09a28896491. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USAKS1900018.
The Sun Rises (feat. Mahsa Vahdat, Marjan Vahdat)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e75ce4309b32b7840af11c4ef44a090149125b9fad916c2b51b3c95d0f9f14. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USAKS1900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa2351b77aa72d2304cf10eb475479bebdc7941b443cc9b30e654e23e43ec7e. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USAKS1900022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378fa055d827daa3199faad2d92c2e6e7846aa9119f0aabc6408ea01c5ac254b. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/USAKS1900027.