Muammer Sun (15 October 1932 – 16 January 2021) was a Turkish composer of classical music. Biography Sun was born in Ankara. He entered the Military Band School in 1947 and the Ankara State Conservat
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 0x37b1f751edf23f0830588cb92ed2200b6cda1d6212894188329108781354e34e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f4e06471-91d6-4f0b-9348-ead27d078950.json and https://artists.proofprofile.net/proofs/artist/f4e06471-91d6-4f0b-9348-ead27d078950.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 0x66495c72fe245cdd2620bf00346382b563a9f7c36ecb93426cdfbf8cabc6242e. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:08:02Z), 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/QM4TX2012443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703a3cb847e04a0ec976f0a7ad406e202eb1e6443d82994e2190aa26eee9fd37. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QM4TX2012446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0334b418831e967050f73d0df66cc0f26e0f9b41efe17813eb84a3e276270a51. 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/QM4TX2012448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9808b7d3463ea24df4b6cb4b20bbb9a75f266591e488f21d84e76e89ae51988e. 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/QM4TX2012451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a5c930452f385b164fda7c15b2df7871f13cff1ef0be997019c2d8307d1997. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/QM4TX2012454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f894bb20d9126a2c252f85baa69e0369ef5c7ac64a8aeb09ec5b00fabfa141. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QM4TX2012460.
Çoksesli Halk Türküleri /Eşliksiz Koro için
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f5cfcdb55b4eb69c2f31164373d6f4d23f324fa50ad7a5783e47d0beb05919. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QMFME2028061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d82e786d2b0027070ee5a0ece452a36e673f0fcc22b41748d2d29bf2991ef8. 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/QMFME2028062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf1406de31322df217d1f5178ea02d053b342f828ccdaa31186e53e74ae3d9f7. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:38:59Z), 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/QMFME2028065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf941901b722747cb8c63606942bf34a9f9991519e4199238ee2af4965c7692db. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QM6N22025959.
Muammer Sun (Türk Bestecileri Serisi, Vol. 4)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f64ca09d00744b6ea76dca197d18a1904b280d13114b7a8b96e0a6754de533. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/TRBMH2100192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5422f082494135cd959309bac9beba6251a3189ce0f0b9883d5687788d015322. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/TRBMH2100196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2acc978e6321b59a93e3d1745ad763fe3609bc07b5a431ebad9257ac02648a73. 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/TRBMH2100201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5cfae1084b0d2813324786d1b410daad15d87ace0bdffb8eeee16d1b9224bb1. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/TRBMH2100209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c87cf750466c51b73ee0f1aa10752aacb0a90e7f47aec9d9331f1acbab74d98. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TRBMH2100210.
Muammer Sun Çocuk Şarkıları Piyano Eşlikleri
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3f128c1d0605b3168e81840213aeb8e1ecad397f82e0606195ab4b273da394. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/TRA162300684.