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 0xba023cfc28a9994968b82590c7a8c3fc7d1991f4903fadf864cae1627c4df920. 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/8839d67c-95ee-40ca-ac5f-f3ebc2b7d21f.json and https://artists.proofprofile.net/proofs/artist/8839d67c-95ee-40ca-ac5f-f3ebc2b7d21f.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 0x7414a1a8c31deeb9b2566e7cc716142fa5e0debe3d6d1858d85aa8834c43d16a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH7811816372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f2a54983727c43fea73c88c244810ae1eafb1aefdad1d590f2dbd26814749c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH7811816376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fdbfe803688a75b408cd314d6c947cc620a5b1c799abd36f5e857a19fa5c3d8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH7811816377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265487d006510733fe0f17f9a9430dffc8d6ba4ee93f6002cd23deaf2fc56dbc. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/CH7811816373.
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 0x5af58c177436c4526c34ded6c096bc94b05425b4054b9d58f4bd44962d80456b. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/CH7811816374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5aa6fa52fa792ed531f66e30c2dc800888251464bc7112711e64626d7fc839. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/CH7811816378.
Stich, Stich, Stärbegrüsch (feat. Greis, Roumee & Dj Rapaze)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ce5197616335f2633e86599e583bbb7e712d0f45657d0daa0967d6d78772c7. 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/CH7811816381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1cbe14d3dd257d924f480e74afb823322da754e379bc325bf6ce699321a01be. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CH7811816382.
Chlini Rebellion (feat. Greis, Krust & Fäntu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7bc9fea744323ff3ed66e43c76e7ff43db9212dca6fa99572386d5017dc381d. 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/CH7811816383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87fc67f738bd16da80d21ed1bab92c213a7066446736a5a89c3e053ba79a572a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH7811816386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2146aaeb11511da6c1397c8d8b1bcf145cd4df9cfdcf1e395831c7bf200e6c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH7811816389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb58e40e4a2ba67c708d2592d322f5a2a1b30680cfd8f6c9f645dc92c16559d. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/CH7811816387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3aa3bdef60043f025b756b34f2078047450b972882dbef28f0261df38de70d6. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/CH7811816380.
Mir heis nie so gmeint (feat. Poul Prügu & Dj Rapaze)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b556a2a601453e9d04cfb0ac7f71e4289cfb46f5ff139a723ad8a4d24a02ddc. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/CH7811816384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18694958d657c0839b125027b8162606bd0f61949fdc574c7d8ad443742853c9. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/CH7811816385.
..versuech üs z'verstah (feat. Dj Rapaze)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b04a995cf2ddc8cd01f107326e835f4ebf41ec1cf00aa43476a7e54c8f0e21. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/CH7811816388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1c31691591dfa08c58519a7105d42dec9ae55e862a77db1456d5f84cc763e5. 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/CH7811821293.
Όσο είμαι ζωντανός (feat. Leptos Trelos)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f6197e5657137eaf90c49aacaad9cb45459dc7a93a85a4f091aa06c76f6733. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH7811821295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ca97a912d68beaaedbde37b421eaffb6b0fd25509a342216efaa226a681827. 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/CH7811821298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd02f6d3074c72895332577d790c9469b2f203a860012b8dfa610e6772dc1b7d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CH7811821301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb588430622ddaab9dc204cb24d5f9d34f0ef4e3d366bdc70850a4265cae212. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH7811821302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83245a3c7f454b9bbc29099c0cd10c54b557f2cdc065266cbc4ea8f360fa4471. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CH7811821305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fee0ccb13260ca7fb60914a4e0709ef7eb6cc6e19414e25e67e6dd480ebcc8c. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/CH7812193971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628d67f9b40a27c9c9f58e36aa77a06d5d570455e4fd04836a826fadac7b25f8. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:18:52Z), 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/CH7812220360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd9f4868a3a8b2b6177e527585ba072a9ac1ebb7bc8a8a5e031cdf4fb4b662c. 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/CH7811930414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2934d253fa9639a6c64c53893c90bb75170e969ab96a05bb0c794c62aca2e88. 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/CH7811930415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1787f54c397677315a08781628317389ee47804c2941e8ea08bc5b237c89fac. 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/CH7811930416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667df15d7bd5b9ee2baf57014efbdfc4c5ec5088f72b9f233ae877e61ff9857d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH7811930417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3f0d5c1c4e7f4443041d0436704529f634f880ed9df2b1f10cb08ec253c76a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CH7811930419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa464b6abd868a4022ff0f27e34f1d903e431868048060c143d91947d6c118f. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/CH7811930420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ffc94d7497e7dcb1fa81badc30dca2c9e2cc0967701ceaafe32259827a7992. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH7811930424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2abcf474822c47eacd24803b2b34451034a7d8d203c102d657249faf0be498fd. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH7811930149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e7a90ff5ea49be67b5c910437f72ed81f78355268e7d72c085544c0b3f93be. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/CH7811930418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce1b65ed38bce4677de93de72ededaf2da880da279d8758069220015ae767d8. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/CH7812109296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9907bc3a7cf1f5d69f2f318d5214227922f640b57cd50d48149317aa51b228a2. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/CH7811930421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc40172ff4f0b162b0a3ca4b7cff2e54702942f462087281beb1e552090465d2. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/CH7811930422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99eb035baad6a0400eefdbcf5c6f7e4f50ebb7d2c472efeebc0d07dacc4e77e. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/CH7811930423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06fd9a82cdc70672ddce326b9e9772cb8f7db2da48778facbf32bf7d3bb27805. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/CH7811930425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b1a8c366bc7959e8a475de05c918b8686b25b5e55fa284cb1234bb0d749229. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/CH7811930426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25579fdb77cee413ae50681ad10e7ba1b7e4c33541aab9a4199ec204d1e3d2b8. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/CH7811821711.