Peter Koelewijn (born 29 December 1940) is a founding father of Dutch-language rock and roll. Koelewijn is also a successful producer and songwriter for other Dutch artists. His most famous song is "K
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 0x2d0f5ae0266c2a9d9e5c1165017b99615a75271623df2e2ddbe7e4c7585b303d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dff7c250-3414-4b91-b9cf-529c9b70f068.json and https://artists.proofprofile.net/proofs/artist/dff7c250-3414-4b91-b9cf-529c9b70f068.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Het Beste In Mij Is Niet Goed Genoeg Voor Jou
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 0x273faadb48e9e7b602ff0ac4a7e8752a6a71ee589a4eced60e2ddbbba7ba6c4a. 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/NLS241200648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eedf60a8381ff26575ddccf0c18ca9656054dbcacbcee9b8577b4f4c1e716b6. 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/NLS241200656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd017f3a1b33f933d5a4298d74ad4ce0b41536e28f8f592281ef4c99c8eb4d9. 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/NLS241200658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6efd4a4e4efb76ff3363c2e802534ab80ffe6ebaad7fb01c48dab919db0a0358. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:59:52Z), 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/NLS241200659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc0e555170901eb85dbd86c755cc926127c83276bc7e02e09d0ab66386029eaf. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/NLS241200653.
Het Beste In Mij Is Niet Goed Genoeg Voor Jou (Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211fcd1217bd4cd2016fecc8b294f28c2dfb3c959888b8d666be9aa6d924f464. 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/NLUM71900100.
Hollandse Hits - Top 100 (Beste Aller Tijden)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd017f3a1b33f933d5a4298d74ad4ce0b41536e28f8f592281ef4c99c8eb4d9. 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/NLS241200658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd861d830b28435bd0f93838b163fa38618a4d041dd524ec7c0d8afabda74238. 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/NLS241200647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff96fd023e081306b9e1976b3b3c34c28403a2989b87f9660c58155429bb7ea3. 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/NLS241200149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273faadb48e9e7b602ff0ac4a7e8752a6a71ee589a4eced60e2ddbbba7ba6c4a. 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/NLS241200648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd861d830b28435bd0f93838b163fa38618a4d041dd524ec7c0d8afabda74238. 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/NLS241200647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600b0fb4771c1f19238e973d9968c1b83e74a4923e5234c53bb30b27ceb972c4. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-21T23:31:48Z), 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/NLS241200644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff96fd023e081306b9e1976b3b3c34c28403a2989b87f9660c58155429bb7ea3. 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/NLS241200149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e18f1d7fd4c6f17c68db7b90b02ede77083e0dd47197da03a4abeb9a21d42ce. 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/NLS241200168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343449aaf54f1500eb4b3d2c830ad93d86b6bda8c7d741b1724383f0202efaad. 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/NLG620560869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef2c0f99d236946c9cb14f325c792c58bda65e83c9dbd924e9e9123d8f05a88. 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/BEJ011000274.