thumb|Niels Geusebroek during the Gouden Pijl in 2013 Niels Geusebroek (; born 4 August 1979) is a Dutch singer and songwriter. In Silkstone In 1996, he formed the Dutch pop group Silkstone becomin
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 0x0b01be3b482534275d2cc482596ddf50c65ae5691a9812ac7f8e5a02fa672df4. 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/c17c438a-a359-4b7b-a0da-811873fee6d8.json and https://artists.proofprofile.net/proofs/artist/c17c438a-a359-4b7b-a0da-811873fee6d8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Take Your Time Girl (live at ruud de wild/538)
High Hopes in Hard Times (Live @ Giel, 3FM)
High Hopes In Hard Times (Live @ Giel, 3FM)
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 0x3a2d53af1cbaec013cec4ded8c8c605d842498bf02d87da57c62cdd2f7e26687. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/NL56T1600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b6261264eba46c18efce477fe248ca8fef2beb119e1546f0151b608c4fb127. 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/NL56T1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524797b425a904e565d78f26917d45816a68f11df31f5139f4dc0577df349b56. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:27:06Z), 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/NL56T1600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea02f513b92d2708fde27670656b5b236f34af718da185fdec5df0e1ff6483f. 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/NLD322100233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa775cdb9a155fd24829ff595bdd19acb29f8517f1f8cef2d844033ab4359b99. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:51:14Z), 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/NLD322200121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30566a4f19ea92b1865c2090d45289c47d75c7e675fa87579afdaa418ec6ef88. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:08:29Z), 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/NLL7U1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1872ac2e150a49037f96d5ec23c9c860f5353aa93fae96f4f433533cd4b270ba. 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/NLS761200249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0abeffe8675e8a84677cf0c86feec388e268227dfecc41e839b35c6631c0fc. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLXV42100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63936216dc58d0dbdb17c4403e32a09606b6014a355c3bc61fab3d275112f8d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLE802400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d447639102ab06af1c7d1f79dc030b9d3ec13a78311c57a8dfde0d833022263. 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/NLE801200381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a8d8cc4df9301a1d458ba0ed86013747b47cd1f5bf3ea99ae68bda29e07c88. 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/NLY160900002.
What`s The Reason (feat. Niels Geusebroek)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7398254afee21570bfea6cada5597dc0a9b4894c5d6df5f8f41a560a93393086. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLY160900008.
Het Beste van de Beste Zangers van Nederland (Deel 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b47c6325725a20c9f3ee45c0b06190892f9368490d96cd180a94e2e8ceb6502. 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/NLSU31400039.
A State Of Trance Year Mix 2017 (Mixed by Armin van Buuren)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bfeadce484f83254cc3d57b8a059de5e26ef9d4481c254cb42ebc4b71449157. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLF711712945.
Hardstyle Legacy Vol.2 (Hardstyle Classics)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d447639102ab06af1c7d1f79dc030b9d3ec13a78311c57a8dfde0d833022263. 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/NLE801200381.
De Beste Zangers Van Nederland Seizoen 6 (Aflevering 6)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b47c6325725a20c9f3ee45c0b06190892f9368490d96cd180a94e2e8ceb6502. 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/NLSU31400039.
De Beste Zangers Van Nederland Seizoen 6 (Aflevering 3)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1487d03fdb801109daf1fab3f3e48b7a0480eda0edf35b13ad7a68e476c898e. 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/NLSU31400016.
De Beste Zangers Van Nederland Seizoen 6 (Aflevering 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21d3a8f2ebe6787311595edbe779f01d12b9c81e395b0066704d93f26c03fe4. 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/NLSU31400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a50ef872461fa917a90887fe4c908859d9abe372ead50a1dfc0eb5ab21702d. 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/NLHR22000550.
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
De Beste Zangers Van Nederland Seizoen 6 (Aflevering 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa619a7733b1f7fdc73fdc453bf6fd8af0e35b7df936b8681828cc7d0109f7a10. 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/NLSU31400009.