LFO may refer to: Low-frequency oscillation, typically below 20 Hz Arts, entertainment and media LFO (British band), short for Low Frequency Oscillation "LFO", a song on the album Frequencies LFO
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 0xee4c1d4a33069ccbad021400f2f2fd44df8d4db2c259817c0b1d03c6061e707c. 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/3dca6289-444e-451e-818d-7177f7ebb2b4.json and https://artists.proofprofile.net/proofs/artist/3dca6289-444e-451e-818d-7177f7ebb2b4.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 0xf3f271b0fa1b8ce51756b51a75c07e49a8be333f09eda0578a1284a60dbe775f. 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/DEA819900511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0f407ce70ff801b71998345887d307ea42ce773e959e89ba35440b49d4e180. 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/DEA819900515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfacfac1fc3d178bb5ad070979f3d7a813858fcf53f032b8ff03a3e8c67d790b8. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/DEA819900518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4e1c90664e56989777951006eac510fcaf5780dfc49e682ce0299ff6d82e6c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEA819900516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79f0c2ed17704db4e3ab5b7928f4af38c4e66c25efa22425f30045b6ce55cfe. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/DEA819900519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55d624913a7c487662f37114f2a558c6053150b9d47a677f90faeaa62db13ca. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/DEA819900520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c873cde1824f71c3764509b01dfb94039810f747ff866397be488daca902ff. 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/DEA819900521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6f874239e172a7a52f174eb4dab5355d6e8760c0815b98cbb4020872e3b9b5. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DEA819900510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2262c7ad2154032b0734062e3bc61668eb637cbaf7b12943bca544f3bfbd40. 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/DEA819900525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6f874239e172a7a52f174eb4dab5355d6e8760c0815b98cbb4020872e3b9b5. 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/DEA819900510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b0feb35797e45aa3f36ef27e0ef97a6e789ad0856b3a64f10e677e26b604cc. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USJAY0100110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d4a37ed999b7efd926d5d8bf7e9e409b0a043d4c350c2c46cc054226c9d99a. 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/USJAY0100100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88fcfbd63090821b47e74d54497f7fd041e7cebb4e3774933ce5aec442aa75c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USJAY0100107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e48e540c6ba19aa13ab8c804924fd2fe0a1832b5e9b2ee5060a71e8d4fc3a28. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/USJAY0100104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8618a6706f102ca909ff9e07be36138bcadb4cae15acb7014ecf97c79e3a82. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USJAY0100165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd9ce4ad1bb76a6003df37c235f133b40dbea5cd10e98c9092c880039b8957c. 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/US7461712061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e48e540c6ba19aa13ab8c804924fd2fe0a1832b5e9b2ee5060a71e8d4fc3a28. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USJAY0100104.
They've Got It Going On...The Best Boybands Ever!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7570ae7ca5f9ab0c0e730f1def376da12aed83432e9dc1273fe8f69847413659. 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/DEA819900423.
Dark Matter - G-Man Aka Gez Varley Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8a7e85e639564f88a93e9c90dc015962669517021b6b18fa84115f772fa6e0. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/DEBL60526140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6696ce67925aa2913bf233bd7cd9b5bc2d394ba4246d59836c59e6a38a1f75. 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/TCAGG2207095.