Kopi luwak (), also known as civet coffee, is a coffee that consists of partially digested coffee cherries, which have been eaten and defecated by the Asian palm civet (Paradoxurus hermaphroditus). Th
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 0x67930386e57f5b2aa6954902a9b755d5dcee9e268e94e31511e33f6d895b66fb. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eea74be1-da2f-4d06-a326-5f7a298e81e4.json and https://artists.proofprofile.net/proofs/artist/eea74be1-da2f-4d06-a326-5f7a298e81e4.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 0x4e128e4b821948a148d9b4f2caf582bec3cb298e1311f7229979ad22fb547c89. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/TCAGP2209494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21595955eefcf30de07740c172f3915f87a039658f92cda52c7e0859e62ab912. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:28:33Z), 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/TCAGP2209499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a231c075be09bacc7b621cabb913d3dc2619680ca4f0e517581919f22ce587. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAGP2209502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29746bcfbceaafdd08ce0891467d661ae0ef9957b5b0c225c6813872cfbea803. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAGP2209506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68cebbdd03aca2a53d90c2031e5ffd64c9cfb70d274a8b338d5470a554a326e9. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/TCAGP2209508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ecdd5e5bce6dc24760f95d5bedcfb818750a5dcdb075b074ccd79b98d3ea74. 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/TCAGP2209513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa565effaad629659de66f273ee3c9edca0c456b45836bcbb6adb478e8cbe1ad3. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:07:02Z), 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/TCAGP2209518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6622ba7827c3b8c17fd9d1c07aef437d26eca95c068a9e5e3f659bf64858331. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:08:07Z), 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/TCAGP2209523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c63182a4fe041328a2320881facb9f18d1289da19d3f39e20d3a54b3360d0cf. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:13:12Z), 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/TCAGP2209530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7caf029b75cf7d35b7f9ad3d49b74a59597589089d53fcfec5e3c41955677e. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/TCAGP2209531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2711033ab83d759de000ebdaebe5b87792dc3afc933c4ad50286b939a75ede3. 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/TCAGP2209537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533285034830b92b5f3f5fcba5969b14bc7ae7b721af5108df2947564b635bb5. 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/TCAGP2209539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc47cc24e580683a8079023b43d45329916d2e240cf0bee283e9f2072c9fd699. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/TCAGP2209543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ba3930c6f7410ffd5541c13bb5ad84bbaaf9c75af4c957e19bc939af33b942. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/TCAGP2209548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c0d74b38c71aa173f3acf9082cfe872dcd2c3bd6f5c77d2186f4a974c970be9. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCAGR2218538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe943928cdfdc94cf678c9247587a060ec77bb0a9ffcc3e0538ad8fe90d7ae09. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAGR2218554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe32a0002655638085242854e91f6817b4645bde13d962368f12c6be6cebd911. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:32:56Z), 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/TCAGR2218560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79db9c1c5bbe0e58844616f5f0e5cd86d6e1e17336aab28791d5f23b762a33bf. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAGR2218564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2522988d829186371ac8967ba4aac504db0a8e910ccb8d45d424c6d193351805. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:20:50Z), 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/TCAGR2218566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4990b9322e187275b83bdb031a7588fe9bedbf54418908750be1cb2994fdd771. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:04:57Z), 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/TCAGR2218569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368751a90c6e13e8a87f19437538f10787dfbbe962cfc85394757845bf7b1292. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:15:33Z), 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/TCAGR2218580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74322a81a30924313b2a1a51ec33c0edaaaaed35aa42857294d43af0f800607f. 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/TCAGR2218581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd62eb904aeaf7e5d8b7f1222d8b1384fd270395484da427308270010eba7c2e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:03:49Z), 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/TCAGR2218582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa284832be2e914a0fbaaa6849e5df16b694f407c01e98cdf07d4606f773c9d3. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:38:43Z), 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/TCAGR2218589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132a3900ec3823a4f140b08ce20d32f4e19bd1976d9af31152f4ed6cfba4506f. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/TCAGR2218594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8abe0033e8156c116f53142438f3c76f75720da7ab790e70643204a483ea99e7. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:25:28Z), 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/TCAGR2218606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7953a9656d01178d41c1c58ed5ebbd0198d7fad4b33099fb51b6f683197f1c91. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAGR2218608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc617069f6723461f969237739b4974e4d38017d0bc65de8bb7de20c3f766cebc. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAGR2218615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9805c3e39fccbf3feb19d50ee84505f9a5c5dfbd7026d4680f69515e2d3fcb. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAGR2218621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec9fd7411b8b3960bc05ad5ee883e7fc38244cbab87fe142bba5e9f7d59d3cd. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/TCAGR2218626.