Willy Albertina Verbrugge (born 3 February 1945), known professionally as Willeke Alberti, is a Dutch singer and actress, the daughter of entertainer and singer Willy Alberti (1926–1985) and Hendrika
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 0xb1a4b3fb38927da3e48f0ae0caf359be80100c9e2dafa135cb1f66bcbb81ebc9. 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/fd026b2c-2c88-4b80-ac55-b0c7061109fa.json and https://artists.proofprofile.net/proofs/artist/fd026b2c-2c88-4b80-ac55-b0c7061109fa.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e59f213bf618f6a7988e4418a4d300d6e85c3d7ebdb2a43d3409a5a61c0bcf4. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:06:23Z), 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/NLA306500062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9377c5a34fdcbd62f097ec0d3bfd07826124b8784fe3868c556faaee38c834e. 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/NLUM71000013.
'k Wist Niet Dat Liefde Zo Mooi Kon Zijn
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf60a393c243d3cae076e958404f4215b2941354b80fb961b67e5fe0e2adc9f6. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:37:47Z), 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/NLUM71600866.
Niet Bang Zijn - De Tweede Serie Liedjes Van Marleen (Original TV Soundtrack)
Willeke Alberti Zingt Liedjes Van Toon Hermans, Herman Van Veen, Wim Kan, Paul Van Vliet, Seth Gaaikema, Wim Sonneveld
Liedjes Uit De Film Rooie Sien (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39cc3a8cc3e3345b33af4eaac69bd6c32c6dde0885849a6e789fe1c07298d44e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/NLUM71600594.
Draai Je Je Om / Ik Mis die Tijd van Toen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ee0ee7fd208269a8237c2fb03c28e8eb92876b773389ed4c2777248352e3fb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLA318900168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab81f657338ff86e86ba2da8c7c4ae1a8d87da4b1e4762975fdce3f17584c7b. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/NLA318900170.
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 0xe110c23ca87ca711118bcc16e2ba006333d1603ebad61d43ed5ca3d927dcc6b4. 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/NLA318900176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28576ef9648b274880dd935ac5ea8e2367eb4cc7e60810bd21b86ca031c69fd. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/NLA318900179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926fd0fc4c42ffc94b5de1de332c4aac3a024daeefbef77dba3ba32b6b582c3d. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/NLA306200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0181a864d9ce08de92e2e465d85f2f746a0c4488325b5d780771604c2c8bda. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:42:34Z), 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/NLA270800213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5b3d93491f17284bb1c7d1286da4897766ae5a27bb5c05b39e9b8887d85c5f. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/NLA270800301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d7945c6e1e05caef0aeeee39b30e5fa4eb854b38252ce9a555405f8c3cda92. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/NLA270800299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615fd7897dbdaf3afd6e6ba35baea1600d1c2bbe4362e4c186e21fa2d9080758. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:07:23Z), 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/NLA306400082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67ea29c125337ec872d1a7f4c42338039cc5e64359361b3a9a18e4560cb39bb. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:54:38Z), 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/NLA306500066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27040bad38bdf46eca183781a7e2cd5f76f1a1046b07cd5008bca0c440c83adb. 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/NLA306100054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7504639355b499c3029b9dee8896e5638603ca5328d8f3944f33f786f288594e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/NLA308000048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8167843e68d75d7e9ce81a49bf1728a84a333e1eef5a0ab1bd9aa708702dd9. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/NL4WC2000044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a1dd1d53e0f461a5933c381f7394929cd07ea0f67875e2dce0f12db6d1941e. 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/NLA950500163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399265ee40231844668070bcc84952586381463a58b88a40bfabf75626a7ffa1. 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/NLA950500159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3079cc45e6471edfa0e0960b039e02aecbe190fb9be0e04ac316b413f9cbc08a. 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/NLZ291400029.
Niet Bang Zijn (2e serie liedjes van Marleen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926fd0fc4c42ffc94b5de1de332c4aac3a024daeefbef77dba3ba32b6b582c3d. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/NLA306200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa273fa987ab0d80c12af78e9e018fa6b63afb784277fba987b6f96b9e3efc9b2. 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/NLA306300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b885bf6e0c7456ba6a9cb6a4aaf1386901f96a1429cd9aa19a9a20ba02c4aea. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/NLUM71000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78fd2c072f8fde151c717c90e09c92a1d43615ef22c1417e6d6b595d94a5522d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/NLA802000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69ee04de766b09bee8f6f92302e577a4340c0af621c9209af8a1cf820c63b1c. 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/NLD459300013.
Beste Zangers Seizoen 9 (Aflevering 5 - Hoofdartiest Jeroen van der Boom)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09fb221a8fa89c3ab0f0581e46f875e26faeb9612855df80f592e367b997a2c8. 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/NLSU31600028.
Beste Zangers Seizoen 9 (Aflevering 2 - Hoofdartiest O'G3NE)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd479fb1581e49aa288ed1c506142d340b60de5628c04c68ce77c24c7021974. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NLSU31600008.
Beste Zangers Seizoen 9 (Aflevering 7 - Hoofdartiest René van Kooten)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2499bb166a4fc1c4a6b2f5f7dd27aacaf849878bfdea1bf402bbc0f7e678b10. 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/NLSU31600040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd479fb1581e49aa288ed1c506142d340b60de5628c04c68ce77c24c7021974. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLSU31600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09fb221a8fa89c3ab0f0581e46f875e26faeb9612855df80f592e367b997a2c8. 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/NLSU31600028.
Beste Zangers Seizoen 9 (Aflevering 1 - Hoofdartiest Sharon Doorson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd583ee42c9832136f0d48776907b917491fad8c884df645bf97bb4773f72ebd6. 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/NLSU31600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32600123ec3d58e2323bea56605070e831c00961ae2de32d1963bd84d48cf4f7. 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/NLS241201154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32600123ec3d58e2323bea56605070e831c00961ae2de32d1963bd84d48cf4f7. 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/NLS241201154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x418ffd4c3a909533012bd327eccdf2a0564785ffbeb98e2a32973a529f2370f9. 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/NLP761600032.
Beste Zangers Seizoen 9 (Aflevering 4 - Hoofdartiest Willeke Alberti)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9452d519d1e1f0e2dbb13bd2ed716565937d5f5bb7dc39a3a3e7311225b55252. Chain 2 (Bitcoin): anchored in block 960101 (2026-07-29T11:46:30Z), 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/NLSU31600022.
Beste Zangers Seizoen 9 (Aflevering 3 - Tribute to Jan Smit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b55805e059e2e95690d4bd363df27b489c906ee339fc029a8e8c14d889c813b. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/NLSU31600013.
Beste Zangers Seizoen 9 (Aflevering 6 - Hoofdartiest Brownie Dutch)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb589409a89dff0f08bf74fb6b641524850caf1d80db5584a9c42f087bb2e35c5. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/NLSU31600032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84f3bbb61ceb1b51a1902a59d0e1ea654a212ab8e1e181d63a4a688272b4981. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/NLB779600313.