Cymbals Eat Guitars were an indie rock band from Staten Island, New York,CD Reviews | Cymbals Eat Guitars. Jerseybeat.com. Retrieved August 5, 2011. founded by high school friends Joseph D'Agostino an
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 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 0x925766262b01b8e49e585dd7dacc530baa717d34daabce6f12be1cfa604036a2. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9d2d986b-0e8e-4bbf-a26a-9546aa597935.json and https://artists.proofprofile.net/proofs/artist/9d2d986b-0e8e-4bbf-a26a-9546aa597935.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 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 0x4d57d009f31f945b3d9068f91f2359de2b3c753a09f5f346577a429d1a8f4c8a. 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/US6240600186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e57ed6bc123892b9e659dec995680506f749153cc825c127844586605b1931. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/US6240600187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8f3d9dc8c34d8a0320f4e0b38fe25d5155dc0914cee453b24a4df6b8401ace. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USBS51131207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf44ce5ed18d535d5e0bd756942719fe1d8140960b1c9dc9232e8992e5b03b36. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QMFMG1415764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69da0f76d380e7d00f8a00078ffefe57a0828d83cd81a8ce6f9bc189e58c5255. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USBS51400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d43146fe5d4c3a8dbc9de91395473d96265fe2536187f81f39fa2524006e7ad. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/USBS51400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7868b89e8fb4a1b8662dc571b2917feadb77df6eabe9bf23d0f5943e05312e9. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USBS51400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5603090db648659af130ceede631daaa48450b2a69bf216def780db219b96d3a. 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/USBS51400044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2846eebd37a2ee83dfeaf49de38689a195be81ca6ca87afd80accc244519e8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USBS51400046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008d2a556bf6b0df53cd3252f6a26eed412ff6f58fe1cc2a481e531223e1bcb8. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QM8QH1600441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8618ebcc60a22b6069e7932a3139564e3264a8b92c310462356dbe2a7e69024a. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QM8QH1600442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc446fa65d63110bc10892f644c44e05aa5d3c18c6181b2fc4d10ce7e29e09e26. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QM8QH1600443.