FFH may refer to: FFH (band), an American contemporary Christian band Fairfax Financial Holdings, a Canadian financial holding company Far from Home (disambiguation) Federal Forest Highway, withi
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 0x15fc49f68d232f63a39aaaae03e9f8b5d8fb576c2b91d0271c40c1419e82520d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d40aa2e6-3a0d-4a9e-bd09-790b8daafeee.json and https://artists.proofprofile.net/proofs/artist/d40aa2e6-3a0d-4a9e-bd09-790b8daafeee.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 0x96a329c5c1de490f00a95773d2509820a4fe546787dc2a874384673bf7496e03. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USES29800046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3396f495a656780376cc84877d5edf1e9199fdf738a8105c66f7ae24d57d8d. 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/USES29800047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7eecb00ea9a8c7ac069471017771509168f07049923ea4753fa386f7c593ef4. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USES29800048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173941fc9a6d963f7ae78fb51a7c356acee1fa79e228d8c5fbdf67d07b198850. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USES29800049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c9cfa981593c13b94863884389b26d267d42684d99b291a21b415150d9dd08. 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/USES29800052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd93e855b11f595a4085a10b707aa7da24fe220e85bdcd8e666868e308f421560. 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/USES20100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3889d13962f4a507c8b46e5987c6c8271c4d90783afbfb93916e35529895a77f. 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/USES20100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fabed73b3ff3f3a23ab15d190bc2a56d02efadeaedf6a3185bac97d6480ef8d. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/USES20100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e486e04c634cef840b679728750881080b5f8e1298acbdf8e55dd79bce773b. 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/USES29900072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05728ccc6db8075fbf1b2902761dfd4443103fa36b3d8fbfa0998243d734589d. 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/USES29900075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7348e0f759e237ad0294a9c55531eb9938e993cf79c5d4a636890ef962d93b0c. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:38:28Z), 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/USES29900076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bbc058092e4c1c204888714701965e71b0282f975f5520b2a3a4b0b3492542c. 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/USES20200079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe8e2983844a42d3ea7137fd5c2f683a15f5f97420d32fe9f0d0ced5810bae9. 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/USES20200081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8613ea19eef72ea32b13ca6e2dd7d7d27dcdde4eef7456c3dee1f6601e53e639. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:50:48Z), 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/USES20100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ecd6af9a25bcc5205db644a85d672151b7c40ef12a0565fd4bce7502f76b5fd. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/USES20100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d50c9abe5cf9db0c6db8b3af567f925c4527de5478cffec8d41950e17ee863. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/US7F50900001.
Stop The Bleeding - Single Bundle (Includes Undone Dance Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d319eddcf3eb7594269527e77e43b55d6ed66218b90149f38c08cbfff8c679. 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/US7F51200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313fd5f5e6c2611ec26724f908efa96073ba9c89c36c189cdb9a72812539bbc2. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-22T00:00:58Z), 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/US7F51200008.
City on a Hill: Songs of Worship and Praise
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b38a722fca5baa67c1cbd49e55f84c1f0d7d9e4a8ce9400ae7be0bb088a5808. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USES20000078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe847a173eb51745feb3f10139bd363e0da0c9935402f8ac245d25e96016e4f38. 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/USES20000079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb06b4c9461d4a6a296272b498d489bc3fd4e8cdc2f2f55a65e75f58bbb8d30. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USES20300031.