Tigran Yeghiayi Mansurian (; born January 27, 1939) is a leading Armenian composer of classical and film music, People's Artist of the Armenian SSR (1990), and Honored Art Worker of the Armenian SSR (
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 0x34ad6d00cc1a1ee9eb0432e78a1faaba26d68046eae8693dff70788098836646. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8b2fdd7f-656b-4098-a5e1-d8cff16114a3.json and https://artists.proofprofile.net/proofs/artist/8b2fdd7f-656b-4098-a5e1-d8cff16114a3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hayren - Music of Komitas and Tigran Mansurian
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 0xfc62256a61d2f6bea1d9c037e23ac4189ffcb852235569918f44ded461bb65b2. 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/DEB330075402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c8e54136e3cc45e1bab9df1f49f3eb5505b3f137831a44ff5aeb1ab6dd001a. 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/DEB330075403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275a7b32e27ea090a6ee1374be2092cbf78ef9b469b45cff9684a2af284d9361. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEB330075404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a56678db7d6ef3ca632176d51e75197447ade5bd09ad78944579c6eb98aa81. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEB330075406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb4b15ec12a7e2488e9162697397b54c4ceb4b53cd0fd54fd5674e8810564bd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEB330075408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d201e36322d04036013724e98554438884e78f15f0827fccf6834d9fe89183. 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/DEB330075409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625c587936781f1351e2e47d0c748ec199b6d6a0af7e7fd16bf959b495f90c49. 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/DEB330075413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6070700a6b7d2701feb7b594ed38473fc393f48984a3e079f75201fcd85864ed. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEB330075401.
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 0x959f574bc95537071cadd76f4706fa0951652f2c881d5861f7503f2f3ba52e5c. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/DEB330075407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d94e5bc9b60816c0948253d91cce40a6bf2776f31716fc5964cfd104ad4b7c. 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/DEB330075410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97904fcf34d678b589fbc23d70365554289ebffe5fb519fa09ae224a23efa1f6. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEB330075411.
Mansurian: Die Tänzerin. Allegro energico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac543d1870f4d78b3a03fe8986c884dc066675ecacf322fe538aedf22f1221db. 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/DEB331650801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83704e7c52292f273451dbee38716e5b619d3840034caf79eae430bcdd4d93e6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEB331650802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ba02f80fbe525197f7de7e478de93a85d79de3f22db329de4e44851ab6358b. 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/DEB331650808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab692e7f20cb7e68f322b8ae30d2916968319958f1f7f17e7a183b85f01620b. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/DEB331650803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c91fb6fcd2d433652108f149ac0277199632296a5cdde49138dd8d072227ba. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEB331650804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1371dd50c80edffe7b07845008b4995b152a8b6cbdb576f3040b7261f15e78cb. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/DEB331650805.
Mansurian: Concerto No. 2, Double Concerto & Violin Concerto