thumb|Oedipus, a figure commonly considered a tragic hero A tragic hero (or sometimes tragic heroine if they are female) is the protagonist of a tragedy. In his Poetics, Aristotle records the descript
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 0xd58eff8e727085109bbb6f30b48c37111ebb116a2170c8a80a8732f0752a8e01. 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/61d57440-9d75-4155-94b5-1bc39368e44c.json and https://artists.proofprofile.net/proofs/artist/61d57440-9d75-4155-94b5-1bc39368e44c.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 0xb36dcdcd7f6623fd9742cd625c84b0b0bcf63190da44ef6f84356de895337d8f. 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/TCACG1505024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24c56963b1fcec58872c2379dcee66e4365357ac31cbe705c133708dd76fcd3. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:49:51Z), 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/QMDA61806993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9164c6cc51b6f3d040bad69bb9454ce073cca510dfa5649eec7ab6995418c5ed. 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/QZK6P2026752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6416ebb68b1f934cf000bd50f1a3aef4dd6765128d4ea25b6ce5382c8fe924. 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/QZHNA2466963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8cb28715c61b6e9a98afdd6395234b77349b9dc1d74ad43948101e769bfbced. 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/QZWFE2401278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc884a4ec024c29e832b920f294a4d3655be3bcef36cbecca9c36bf045a92ff6. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-20T00:08:25Z), 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/QZWFV2431168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7d0aad20c275f861bbe6ce533a721233d4df28c55899b2bf0049bf17aa5dba. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZZ7X2438757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4628a3437a9930fa9915d074fcb0ffc1f96f1eca8e43ff5b68266be3130b2f8d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZFZ72029619.
Point of View (feat. Tragic Hero & Adia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1df6839a6335846aea146a3d1749d40779771d68e3206f78139e5ccc05553c. 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/TCABZ1407898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x941bb9d4805e77c65cc7ba7a281518676286e217f792311b88524e9ecd51e2db. 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/TCABP1392171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d7d9d85bf50d71b11b26c9405778cf8e5e49bcf8d5702cdaad2a535e135fad. 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/TCAFH2089849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19f7ce8604a3d24b9120515665b17d2bbe5aada06d24cb60ec45abc0180111f. 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/USA5W1800192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1f0572fd11362a1d9f0c6d0d595eca4532294ca554bec13e1242e133d1c57c. 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/USUYG1062960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d0fd1f58a19fffd67970330cc27a4ecc91a95f5098a446548a83749be30bd7. 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/USUYG1062965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102e8b7a7f38c117d0e179545b124460e9d5ed2258a7395dd9d7a242e8a75138. 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/TCACX1779234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789dcd26767609394a90193984e1024bb37661fea7f1ee4614dc6ec983b39725. 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/TCACH1577485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46c63f991cec01660c6ec3247a6eef9f19f5b9dc43ac809cdb6812c258f4371. 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/QZHNC1929139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e62d471eb8042b83dfd50e3bf5d4d1f82390a710682036274955fa12d6e738. 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/QZWFX2428649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa512a225666a80e372fb1121eade947776f1ce6ab454c4ebe806653402728f. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:10:14Z), 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/USUYG1066183.
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
Cmdn (feat. Deraj, Tragic Hero & Drew Allen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97d367d53ac841dd6290a9c61d377b0d384b45f1a09216fd1d0d56f76170536. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/TCACG1539107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08583dd70352b29c76af6eca92b3553492891c6083a30c15c5bafdb8ac5d7e21. 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/USUYG1086757.