Eefje de Visser (born 8 February 1986) is a Dutch singer-songwriter. She won the Grote Prijs van Nederland, a national competition for musicians, in 2009. She released her first album, De Koek, in 201
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 0x399c33731b79ef072ea376b6dafb169a003b581712efccac7fdad3b8a18280b6. 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/bb98339b-b266-42d6-95da-b742651b4f3c.json and https://artists.proofprofile.net/proofs/artist/bb98339b-b266-42d6-95da-b742651b4f3c.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 0x01182af356d87079304ba4847aeb94242fde6a2a1874af71ffdee887a0f0d4c0. 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/NLPH61000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99a8df5c25a03b2449bd714c610091488407a44df96e10ef15cf1f70dba1267. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/NLPH61000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a858205b8f60e0fb419cc4867f016c2f3d0b72eab030470b7beeeea9c09d8a. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/NLPH61000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5daea613fadfb23ae77a6ce8a8fdaa51993bba2eacd7bd16a3e56a737c40819c. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/NLPH61000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30137f2af094ac824d91772984cbed6d0cfcdd84a5d89ebfb5ca6a400fdf7935. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/NLPH61000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79eac0cc4fd8c41d7333af193ec72f70dfdb1da10f1b5c8f96786391fa05cf93. 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/NLPH61000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6eca3d10b4dac1967cc6e30d6dafc1625a944cb77cfbba79dd199bebdc93427. 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/NLPH61000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b85b1145e8c99cc0cc735a248165b7a8956ad323535bd734e9b7fabb961950. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/NLPH61300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a014663cbbf7ec421ecc520beb555e64a305d7dc30e03b780598acc8d922e7. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/NLPH61300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a540a592c9367a4b48cdfaec9761c665021228a55d4c1458a62a1813fe33dc. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/NLPH61300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a1ba3a4efcbbad9e60dffc337bbcd2f164b225b5cac3a48b22863536ec2b2a. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/NLPH61400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe212e3b4a7f96b5201e073be6a4fe772e5038beb0912f37c6ae01bb35120c9. 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/NLPH61600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3bd53092cf48075f0125a8855ef0bc0289a60586d8e694d072564153327bb28. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/NLPH61600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad908b6d8bf3844343dd56ea35717e10d9b7a966aeae88219842d3327a20aa4. 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/NLPH61700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5152a087240d4ffee792f3699519043067fa34987a8bbb05bcdf424bce7bb8a. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/NLX1G1800063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbea1837ee17177540cdffbf06732225602c90243d63b90a081e6ecc7d6c9a7. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/DEU671703432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf406bfa9dbd2e49e1290967f6cf0231920e81baf634d3126babc3cb1cc75412e. 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/NLPH61900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed02cb053f97f2efa3d3c57b41f526a4f42d6f07060ad808d09f7a98b304612. 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/NLPH61900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4767a21d01deaea92f5e4b3f3ee8286cf607743d07bef10cc68a76f555e1a4c8. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/NLPH61900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4553df582c0ef92536bc98e0ea387357989e082f3b01e7652860e5c694393a. 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/NLP762100123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f511ed5111a863bc2c8e08146206497207885f8b302732f639488b6d5998e92. 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/NLP762100122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c759be8f872de64db01509ed5680207ba5716181f5c7fbc9fba8c95d816f57c. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T05:43:55Z), 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/NLP762100207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84839dcdf04cfbd8f7e1f396ed1d25fea322146b98201aa6c3555f796022d3d8. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/NLP762100086.
Stilstand (Bitterzoet Live - Radio Edit)
Stilstand - Bitterzoet Live - Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1303ee0e3df46215024e8a7cc9e56fce75cfcd83fb51c3c57b55a94d3779237b. 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/NLP762300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93d918dfbbc812e5e5313ae60ec09e09c3c92d0c1dc2d7c178f32ad23745968. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/NLP762300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6d746629b3cfb69f1ee309f27c720d84522128988f8ec7d7450d559034a690. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/NLP762300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50bf1af496ee8607d01feffccf96205397e886ee41f1131f9f2f5bf9c6e8efd. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/NLP762300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a764718fd2e132835c796ad268a32fa04b7966fb4ba26434324574c994cab6e. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/NLP762300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763ba7e290ba533aabdabba901c6f23f6cf391ec1dfe2a22ee2b0961af359f2c. 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/NLP762300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdacf2d018f207d4d3e4f31d71a66e2a98d84c7b1e429a761e9c7cb2b3c56451b. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/NLP762300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db400200a8a8c40a457790e6c699276ea2fe2b4d5ce183ee1c5742ecfa555a9. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/NLP762300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54fc8455aaaabc4a9b74d2734a06f05ba81cb7ad6dd643fad6bdb0edf20f6db0. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/NLP762300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99fb965ed8059265118397496cfee91744607f2e045fc97516e4134afa0a95bd. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/NLP762300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc566c373c926d5644758e4c7834ee146ddd5e605f4de5a0f349c0d508c13eb35. 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/NLP762300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88260fd2f1f58013f21fab899acc54d972d8611e2d5caceb0738349613bd5f54. 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/NLP762300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3242d522ba8dcb2b39b2bc0b9f14bba601b4542593972d65984df352b4a75c78. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/NLP762300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb56925ca9feb17db614f16f43bacc554f3405efafaee29364fe02f2d3ecca2. 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/NLP762300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0168370020daea5e3af0067e596749f85067ab21ccb7bb6eb0325ec4aa63ce2. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/NLP762300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf60abdaa26b1a546c7b85cce0a701178e755c473956e1c01edb03eb8212a8b. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/NLP762300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16047eeb4205f093379ad21602355c8fcf7a230d4ec481530fd540f43403fb93. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/NLP762300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90defd42bcd29d3b342f2dac0ab096020f05f93939b772bd476090475f030d8. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/NLP762300251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710c920a6b8b4b6aacaad222ec27c3b94e70ca64b7cbc21c3372dee538ebd990. 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/NLP762300248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7818dcfa2d1550ee4a5afe9312ba39614ca8ad0b24ed0d1392907c349a1b7a. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/NLP762500261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb5f238807bcc07bff5a3d1b63e4dd21aedbd1946c8af8801a7546a59c5a2f9. 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/BEP011860003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8102e5fd31ad06b938adf693d54f64ebd9ca58db28c101ccaf3b7bc178a22038. 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/GBCFB2200646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8102e5fd31ad06b938adf693d54f64ebd9ca58db28c101ccaf3b7bc178a22038. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBCFB2200646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8102e5fd31ad06b938adf693d54f64ebd9ca58db28c101ccaf3b7bc178a22038. 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/GBCFB2200646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8102e5fd31ad06b938adf693d54f64ebd9ca58db28c101ccaf3b7bc178a22038. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GBCFB2200646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb5f238807bcc07bff5a3d1b63e4dd21aedbd1946c8af8801a7546a59c5a2f9. 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/BEP011860003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f606b677179eed44535290d4b6c156d767998b14dd8889bf57b5700b35151c3. 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/BEP011994008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb5f238807bcc07bff5a3d1b63e4dd21aedbd1946c8af8801a7546a59c5a2f9. 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/BEP011860003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08acbf3393a72f08b54b32144f4138b0b274c9f8c782c515e22a8d2dcd30974. 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/NLB601400005.
De Supersonische Boem - Annie M.G. Schmidt En Harry Bannink in De 21e Eeuw
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ea016ba1867f32e4d9d6fcc0349e016dec0813dc9c1bdc3f5c6958e819ac51. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/NLB601300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1165ef562d7328e0f31c7ef3247e793f059ea84d05c35ed8eb13b9f8c7fdc42a. 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/GBCFB2400687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db3252076e67692d2ab7a99edf68580c60f194a8cb0f608bcce21df1704b8b8. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DEU671701663.