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 0x2111c47e48c080fcee603ea240c0727527c34d8a969470f9b208345b292ed162. Chain 2 (Bitcoin): anchored in block 953706 (2026-06-14T23:14:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7bbd4ec8-3af5-46b3-8065-d3eafed4f503.json and https://artists.proofprofile.net/proofs/artist/7bbd4ec8-3af5-46b3-8065-d3eafed4f503.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 0xbd54f02c04ac63203ced67e4524f41ecd2539ce0fb2997530f260a4d1eba8ee7. 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/NLFL72100842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf21a0e6a437cc772240ac2e515a4653967bbfb54dab94f138e6b92928258be. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:03:13Z), 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/NLFL72100844.
Cryogenic Presents The Offensive Rage Album: Harder Dan Je Moeder
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59dcc5302898587f3d1fba5467e17de63fa6ab41fbb9a6fa7f4e8e34bf892f2f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLS161802516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c128130a781fb5b378d3b8a14d107a7dd75bb634806b501b409e3038fcea6a. 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/NLS161802453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19a556174d54f023326f6892060ed5ad72146ebb2fb4385d56bad75caa38cf6. 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/NLS161802519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f30264208186b958c3c53248e46cbbfcc833c94c32c71c07fc6156dd134255f. 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/NLS161802525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4f3b469288b7af44254055d112ace78022c0a6879a9be25b8b602e01cafadd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLH2L2100177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a5f8c0f0059f227154e1172c86c6405b2658d8dab4be5995657c3b09825d0b. 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/NLH2L2100073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2431899df62b6bb93d4cc2771033519143291e9f8430c06211342e6cf4f20f59. 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/ATR981236576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x887961b86dc232954c2e2c4a3a5a376d30c5a1e1fc86027a1a76e96f8ec09b49. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZDA42257932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3479121d9fbdbb57fa821e9675b4b4d101e7a302e91f21be61fc2f41002431f9. 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/NLS161802555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57f7b6a4683286855578f33cd3d6c6de7580029e8322f9825752f691b5546ed. 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/GBLFP2294711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a25ddf3406aceb24c3019fac06163e11c2cf1b9e7ca9c440aa77b27162094a. 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/NLFL72200463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39493849824a672ddd4064f0952341b3da7bfefbf6e0d47aa50bb99c5f77dcac. 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/NLFL72200427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x043db2c72d64156f59b2155e1487dc9f463aab92afa35ce983e6338a96e42140. 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/GBKQU2239290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ecde83ab5a59f7e2767dc98e5565a70deb44dc514829d0ec14a524f71769e44. 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/NLFL72200099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c49c539528bd2743c13664975b04961714a9db7ba47c9f2fbcb83df08aea70b. 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/NLFL72200189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d322147302f3f318b720205a3eb5b5a488d39c7336b1d064a7ba2c356a05795. 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/NLS161802487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea47b810d7f7c8281e4dc0f3069bf3593d157eebecd2d7a89e10f02284fb0bf1. 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/NLS161802774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce3dc39b6e7e1c0ef9e6b63d3909ee21565a3f5c682b73e2b3d99b20d9a66dd. 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/NLS161802749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe54159b773f72b8e216dbf94a507ab3d6a5fc0db28a0e8fc31c5bbc176be20f. 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/NLS161802775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7c7fd942e4bc2f9da5bb10b73fbb5304cc5167861d2961fff24afbafda5478. 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/NLS161802543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12aef14ccd2742b3552c63bda311f27feca439283d01e92cfec5a231ddbb1c7. 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/NLS161802698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19a556174d54f023326f6892060ed5ad72146ebb2fb4385d56bad75caa38cf6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLS161802519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d322147302f3f318b720205a3eb5b5a488d39c7336b1d064a7ba2c356a05795. 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/NLS161802487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c128130a781fb5b378d3b8a14d107a7dd75bb634806b501b409e3038fcea6a. 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/NLS161802453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168218fc856322516d503c741cc8f725964d9fa414e3ad78a33e01fccf73f57b. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/NLS161802454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c0aaafa5364a0ac5d1f2010c353eb94a8f5d16b5bbe7bc8a6cab91a1b98f03. 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/NLS161801912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe3fc2eed4df80baab211fbe804102b196f503c3b8435a3f915e89051412833. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLFL72200351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21ab94a274b3500e9ab94656f057104312fc4b532e8aebfa153f4213e5bbec6. 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/NLFL72200355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x467701d615388fa828fe9d27e69522335845fdc2b40738e4ab6b5be8fca492bc. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:52:11Z), 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/NLFL72200357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c54296d23cc1520d7ea9aa22f24f31895f872b6e8cd9ae545158aba7e483d1. 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/NLFL72200359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8906aa89e74a26784ee8596037b4130c3fe102e1c1925385d7843979f04503c. 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/NLFL72200361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2731bd6d78bbb0b5787408ffb8d3a83b8c70e6f10518aedc61c1b2b8947c833. 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/NLS202300217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ab09edcbb49c384fdbed8afd2cf31fcb222b2a1c746024fdede54ddc7b6060. 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/NLS161802378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955f344cbfa2f2a2cd1eaa4375cdab0229961eac70622980d64b27a92cd8ac62. 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/NLS161802379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a06292fc8d224d6412fe0cba4a25b4a0062385fd2923e41540e6e51f978d53. 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/NLS161802380.