Dead City may refer to: Dead City (film), a 1951 Greek film A song from the 1997 Patti Smith album Peace and Noise Minas Morgul, also known as "The Dead City", a fortress from Lord of the Rings un
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 0x64f31a8c5c7932b28ebf48d9015627a80baeb84d76943a35b8f5883fbd61a3cf. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9873f1d7-24b4-450a-97ac-f5fad48d8441.json and https://artists.proofprofile.net/proofs/artist/9873f1d7-24b4-450a-97ac-f5fad48d8441.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 0x39ef00b69b4231e8b55dad4a05d6b3ca9b6da08a5c330a3649948c50e96785c3. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZES72153067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1233ec5ec9b50fba0d71cf4adb4d0ff9b1a5d2a83c3fafff860256dd5cc2512d. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QZES72153068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0f9a05b3e123642ad062929569ab24aba7630741ee34a78398f25dbf1b95f8. 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/QZES72153071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05034d85aaf297cd409f861eaa110f1773d293759326e19284800091c12d84b0. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QZES72153072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9815431ab5f2353ca644544d41d28209d0a113730679caf1c8627f6c301182. 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/QZES72153073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc833ba31227efdac407c7f69a243e2c6f224fbdc63b95885c8cd4dd38201f416. 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/QZTAX2248663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f61dec1ad76ace16b19754f69ec39d25c59d995e915f4139a130af6d9514aa7. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZTAX2248664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ac7a87f5b7668756ae3cb2851115898f1125a79170ad9a0790201c94289db5. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTAX2248665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc118d750c80ce4c90579bf5ddc6a0a12c8121469f29969e850672afde68cfcaf. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZTAX2248666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0aa75b19dc2ae5a9415b6f2edca46e8116c543ef617467c254a96c807ce06da. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZTAX2248668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed3bdca076944f5122d4d36ba40f3405ad6249aa8a575e237691611ddaade5d. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T00:53:33Z), 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/QZTAX2248670.