JFA may refer to: Football associations Japan Football Association Jersey Football Association Johor Football Association Jordan Football Association Other uses JFA (band), an American hard
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 0xec4cb0422508dc1fbb1d54a34f38057ecbaa35a8b3dd2231669911dcc406d960. 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/5e4d130e-73df-4199-9e23-d1bd71a8cf74.json and https://artists.proofprofile.net/proofs/artist/5e4d130e-73df-4199-9e23-d1bd71a8cf74.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 0x8fac21644a39eabfb59d3c76111ce0cfc339fcb663f092d3d78acaad4f4b99a5. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USHM21677922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4852c7940cbce07fd6fa8f047bfdf1d5ab33264b058fefcb09ba239bc92d5b4. 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/USHM21620157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc8ec428fd1f965251822daa949fff2875282e1a8f78379dd3b30cd626ce59f. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/USHM21620160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x548f275782cd0c1d0ace5f7cbb8011acf2eb8618c92d3624d062a7c130f251f6. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T21:24:46Z), 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/USHM21620161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836a473678aabd6689602f67e5abc3234e8d275a008f40ac49a7a88d4ec27f80. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/USHM21620163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b0132968122fd7b4c2140f804c6b2353465bcdb3842904e55add6d77b57bbf. 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/USHM21620164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c96a7eabcd73c1ee7a9abff7225825f1a461d3afe8b75cb7c25dde21dd6e0a. 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/USHM21620165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520a4dad058c85900800c3459ffdbeeaf7843c9f7953234f0deaa678f1329ac7. 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/USHM21620166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d6d1aa0e00a476fb2a4e36619955463a843fadd365933fae8f55eae8af04c2. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USHM21620170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c6882be0ca9716f4346417585c29469ad87c50b267c32ee9a436679d76f69f. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/USHM21620171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0385a64cdea8d94c1bf7204f4e19e6a46464a2a7686fbb54cf21c2a63cec9b12. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/USCGH1953329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd93dca0bc9690c26e831745d3ac9c95a81e3c4ba91168ff9a46cfe0fb0af636. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/USBAE0901276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce7385410f7c7ec6a4adfaf5f2b5cc88f1864bf0ba074fa2b8a47c24f0188ed. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/US5V71000064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e0b844915e821bf7c82143a168add7deb9b535b524c928a3bbbdd83a937d53. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), 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/US5V71100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe597b53721a735285421d07c2b75c0021e58d68c7dfa18f7507a3621fc8c88. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/US9HX1000295.
The Future Looks Brightest - Rarities and Orphans Volume 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d49aa5abe625f03b923479c2b6857818d4edf4a31558811a8d3ad00c5ce7e99. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USEWM0910010.
Superseven Presents: Sixty Bands - Party or Go Home
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c609a3ce6c26bb32a67de4d5226c9600a751b6182a354a12a5509010ec88b7f. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USA370523674.