Signal fire can refer to: Fire used as a light signal, a beacon that can be seen from a distance. Beacon (signal fire) Phryctoria Byzantine beacon system A smoke signal "Signal Fire" (song), a 200
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 0x2589a4c1149f090dff70459c027c5037100179a5ea402f2ab9a4ab9ed78f4c7c. 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/1a3cbe75-4c53-41df-aaed-2432a91f1895.json and https://artists.proofprofile.net/proofs/artist/1a3cbe75-4c53-41df-aaed-2432a91f1895.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 0xe3c20d21ff29948c4b27128251c87ed9550b0fbe25c6a9a2f0a31b5ac3edf3f1. 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/QMEU31705705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d4d6487435f6249e086eec3baa9e9147f27ffd45f5201fb019da54c69a70f0. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USHM21974666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f106f2d61ea1df512bafb9253fc60152aa06e833eb8e17a622a4a82a5ab8a5. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/USHM21974667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04de13ecfa3eed5dce451b86cb5118eb7368416f9dfe51825c71c68702ed362. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USHM21974669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca629e28653e282ded3651026c59fd9864c8b7745654b9b76dd5f70166662916. 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/USHM21974671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ebecb86ae2016e18abe63b8776597528f69bed3a7f65cfdd4ac69ed2d916f2a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USCGH2315918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f25d4c878fdcdb0ed0f6b2e8eb9a6ca6b6618047ff84232f345f610167a3a1a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USHM82355670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b65ba75d58d0e20b73e04f755008b8d3aed9dca7872097863180d4d9ded235. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USX9P2340152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed22bee15eb4af99b4b700179c22e4496fcbd9ea923699b5ea621939d05d8713. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZZ8B2470974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51351f2c6027b2b89433d44bb44a0548f2674beccab939f6fecd00a977359436. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:37:34Z), 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/QZ5FN2529884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15f685b71e8cded523cba8e308489d6868d77e2fab588566e13c45590cc5c87. 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/USLZJ2568390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb673fd4b9cb4e13c4239cec3418c8021a34b6843b592f1b83d8eedfdbd1e2306. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USLZJ2568395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe11ae01bf924095fddf7304726cf6999d487291f94f05115625c6a056b18235. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USLZJ2568397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eee541c46cf1f1225a56c92a945fa7dffa1a1c654652de488eb6acc24792ccf. 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/USLZJ2568403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa2ebb322e1f29da2e22f96d2144556b683132a678af6f69cea463e4784b3b2. 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/QZHN72101776.