Cygnosic (pronounced /saɪɡˈnəʊsɪk/), stylized CYGNOSIC (backward "C" at the end), is a Greek electronic music project created by musician and programmer, Georgios Psaroudakis (. His music is associate
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 0x076b9784bba6449cdb4383e70c8c70e3243f4978d90e10bf70c08ccf8ff6607a. 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/e2b4bb68-0d08-40d1-b733-7aaab4e126d2.json and https://artists.proofprofile.net/proofs/artist/e2b4bb68-0d08-40d1-b733-7aaab4e126d2.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 0xc205a887a2a4643a9a4b03a0de2fdd020314e5c8ef85ed22f3ad6d9f49d178b2. 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/TCAEM1995869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f69efabdda5672552ba83e7badac5d7969ab48c4044be8d06839e94ca39b2d5. 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/TCAEM1995874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89dec6cb745b41b38825e235a023f8e92fd699e37a76661f1014e52101d52e78. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAEM1995876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4275ba9b87d20c0f6ab60846c35063e41595559a2e1339b0128ae5107de562d3. 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/TCAEM1995881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94477567231a828659a2e632c8744e26a49d823e6fe95c907bded4547e2fa937. 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/TCAFX2176894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77d54a0a4b0bf20c2e714f67cb6ae888fe4afc5154a95f9a650adac45773a97. 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/TCAEM1995885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b6cc87f4caca268c2755791a123a5d0ff2341f16c68edd883b106d9e0e16f2. 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/TCAEM1995888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a58d3a1719e6d58177974ffd7298d1090f0a159b09ecd10491972ffc8cad538. 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/TCAEM1995902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde671caff37be35d7fe1b1a12062946ff30fff435017886c925ee7ba5ada6ad8. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/TCAEM1995870.
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 0x086b57dfb45d432d67990774f11073a78527974890212ae4873961eea2aa1651. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/TCAEM1995893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56869e73ca065667061d85c52bf3c0382a2a3b8a30cf7ec66267fbe68197cf14. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/TCAEM1995897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a23a740abfd34952bd4ab92c3c1c9d765eeff69637208158a005a06c47ccdb. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/TCAEM1995900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f248d910e14c4d1ecee6e3ae9e351c51882f0e717021d3c5d24471d576f956. 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/TCACH1567982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f9974eaedb17d56bfe2925bb74aa1c5f580cbfcd0d0de742dac82cff63378a. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:28:18Z), 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/TCACB1469373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5847fa10415889f40d3cf4901d21dc8ed468d0c2c69349ba2a2683e243da95d. 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/TCACB1469374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04db938fd4a6f3594e335b146bdf54ba7d756d99cc8f3be0bfd854354387546e. 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/TCACB1469375.