thumb|Blaudzun, 2014 Blaudzun is the stage name of the Dutch singer-songwriter Johannes Sigmond (Arnhem, Netherlands, 26 October 1974) who played for years in various bands and projects before pursui
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 0x02bd7eabd39cc7ead6e37d109b72b71a3d55b7b7796e272489fc11adfaad43fa. 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/d3f85ff9-94d9-42dd-bf15-29f8f5715bd6.json and https://artists.proofprofile.net/proofs/artist/d3f85ff9-94d9-42dd-bf15-29f8f5715bd6.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 0x7e1d145a3418659e9458496e05e4f0e46f29392b0f0852905098e75ccf3a8b69. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/NLC240800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c5826d5bef934546f2211074e2519e3b3f9f42405c61b4325ba3109ac241d3. 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/NLC240800034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64c27813f5e8215a098dee57d21c1dd45ea51d028169ce81964329c2f0fd5ff. 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/NLC240900135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd741a76b20efb2c7ad765285567b68a5ec84523c6d1a3a261a7128142c89be1e. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/NLC240900137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ff97ff48366cecf7eb7434ee232f61229c541137b376455ba35c82e08ce467. 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/NLC240900139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216b11eb348ddafe0c954ad4037ae9ab3e824c8bc362bc6c2aa1add1f8989ae1. 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/NLC240900141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9d707612a9ce65f65acb836a484c44ed9049f3add78f72365adedd81e535ab. 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/NLC240900144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffac079678c5c1f8c14499c4e4d786bd50a17841deb1f2539d714ca92b02fa41. 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/NLC241100178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f4fee13ebee236904a7c90a18ca8440a8c4f780c1f123746e145c8807c40be. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/NLC241100182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc0d6f3625907835135c7b9bb5d545e091c70a737e9aa6921693f5b4d38fcf1. 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/NLC241300116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f92abbebb3805fec032ba27e9beccfabc4f17d424514cfcbe9610c666dad2d3. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/NLC241300118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b6db308f06fbc95c02bb9923aa2283ca72ee7ac76c715a1531974ac2afa783. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/NLC241300119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160c028aa5f3def8c2375d4c09d9b4522cb5829929f8b217a31cecc4231e1550. 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/NLC241300120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6db14cfb415ba80a9d4334397c47cc17df8b7e3b8e9f05fbf264b105e2adbe6. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/NLC241300121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba0cbae071150451f46cb588718dd3c3dd3fe2d267a6c94ad4f97c3c3d01cbb. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/NLC241300122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f23ec64c1016f31a52016803fd356de407e871d62309fa579018ab7478b83e4. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/NLC241300114.
Bon Voyage! (Official Song Le Tour Utrecht) - Single
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7fe28a24b3d6f352e4afa96a4043d59e94b53ba06099112a1e3b1cc0b843cdb. 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/NL0311500006.
Bon Voyage! (Official Song Le Tour Utrecht)
Between A Kiss And A Sorry Goodbye (Radio Edit)
Between a Kiss and a Sorry Goodbye (Radio Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f571abf2f1d4c0c592ef6fff60a0ef8fe15adbe4aba3498fc4a42a10081486e. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T11:57:43Z), 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/NLC241600285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0d695ee2d2770c881a589accdb9cd58e73e97892ddda863df7813d3c6c4e15. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/NLC241600287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee042ed50021304733963b5b27001433bc0c518258486d0688506ba27bf2218d. 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/DEE351812079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1430bb031fbb5913b65d983cc39131b95ac7e55cda3d0808ab1ce2179fe4c009. 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/DEE351812076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee042ed50021304733963b5b27001433bc0c518258486d0688506ba27bf2218d. 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/DEE351812079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3b540c241b18826499587e92cabe3d89363377224f715dcd4c3f097601875e. 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/NLC241700181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00dd0255211365e0797f5145276e777ed27d9f0d1d138c24464dfbb88ab87b04. 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/NLC241700182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97fbf251652be478bd42057ce27a429510f9deb4cbbd7e05019fea4e9edf3c7c. 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/NLC241700185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6b38fa72a3e6d36cbf751923a0dbdd29d9fdca0bc299bf32726bf66fa30ac5. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/NLC241700186.
Musik ungeklärter Herkunft (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbcaaacd53ccecc3b630ebb4eab6221789e69a8e535f49d5df15cd58ce1fae51. 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/NL2PW2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e13ce83e556ba9879d89ddb3265168f7c8eacc4fdf4c0d1d558b34e1a4c9412. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/NL2PW2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbcaaacd53ccecc3b630ebb4eab6221789e69a8e535f49d5df15cd58ce1fae51. 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/NL2PW2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29ce0894143396d457c4fb18877ce8fe126e57c4f610003ed04bc5fcd31f48a. 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/NL2PW2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe021ffb09ea10b7a5b97931283218bc4d2f7501b706b54a609cb3b3250a4492f. 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/NL2PW2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1338d32c91db7b70a9237c0f988ea7b563bd2ec909c611f26247fec382863231. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/NL2PW2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca1b52fc23466603256c7ad4e4dc0f34699612216423658147716a6cb47836b. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/NL2PW2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e7ea1dec8be3184b004f7e9725292b817761a034ba4d6be75965c7d2ccddd3. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/NL2PW2000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c22200aa1d1cbcd93901e6a0dc92de98413dad6ca01cfa6a47301309cf6586. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/NL2PW2000012.
We Both Know (Live with Amsterdam Sinfonietta, 2019)
Heavy Flowers (Live with Amsterdam Sinfonietta, 2019)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad93356698902c50c9c23c1ed88fda8ea7c3d46fcdbc94b337eebb36c6fcf3db. 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/NLZ292300101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3e2a6346237ac9cd0b791c09977be56a6097fc6e80413967aa56332c7880e5. 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/NLZ292400109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0edf30604ad68a657132df730b907ef45559bf826afc964465ce1956352c10f. 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/NLZ292400145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711cb6fa06e2c77ee23c131bb7b9c834015fc60fcf4b941d7e5baeb66c30d2cc. 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/NLZ292400146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bdbe324e2aeb21909800980f881b9cfb2afc91d7c74018005eadc6dce4614e2. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/NLZ292400141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e4728def0e2087bc5c882a9716f5eefd8077344a474596f0ad136a2fce6d35. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/NLZ292400144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad93356698902c50c9c23c1ed88fda8ea7c3d46fcdbc94b337eebb36c6fcf3db. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/NLZ292300101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0065a4188da2585815b71adab59fc5cd12c89dc041e0ed24827f1bf92024c09e. 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/NLZ292400341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f67b0bec475582a8a04723a4d2f1899eace75a7c11cbceab9726c3ffbd3f64. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/NLP972200009.
Jan Douwe Kroeske presents: 2 Meter Sessions, Vol. 11
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d1371503b46ea152ce3dbdabec758db58c0b5caa5ac1c772ecbeb23ad473e4. 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/NL07C1700217.