Walko is a surname. Notable people with the surname include: Don Walko (born 1953), American politician Lajos Walko (1880–1954), Hungarian politician
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 0x27ee2134f4beb185734d4d9429657be51b4d10309f26ecd122edd8aabfbe5c2d. 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/72d402f3-e738-4fd4-b8cc-5da66df0923c.json and https://artists.proofprofile.net/proofs/artist/72d402f3-e738-4fd4-b8cc-5da66df0923c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hase und Holunderbär 3: Auf den Spuren des dicken Bumbu
Hase und Holunderbär 2: Der Schatz auf der Holunderinsel
Hase und Holunderbär 5: Bruchlandung am Bärenfelsen
Hase und Holunderbär 7: Das Geheimnis der alten Goldmine
Hase und Holunderbär 8: Das wunderbare Weihnachtsfest
Kapitel 1.1 - Hase und Holunderbär 8: Das wunderbare Weihnachtsfest
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 0x812b647602691c3c7ef4166b611eb6ec351c3f67ed024e4b8e1b5fd228086afa. 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/DEVP81161372.
Kapitel 1.2 - Hase und Holunderbär 8: Das wunderbare Weihnachtsfest
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fde1e0216d1c0aa7387855fbfa2b063c52ff17833ec31983eae484dcc922789. 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/DEVP81161373.
Kapitel 2.3 - Hase und Holunderbär 8: Das wunderbare Weihnachtsfest
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68a278ff57aa924c571a319d6686e16847202b8eb6dacf2d5da9fb9b95cf580. 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/DEVP81161377.
Der wilde Räuber Donnerpups. Die Räuberprüfung
Kapitel 5.2 & Kapitel 6.1 - Der wilde Räuber Donnerpups. Die Räuberprüfung
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cbd5f0f7a19fa366e24ed095f58727ceab73301ca4a04990e6e8220d4b205c. 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/DEWM20455575.
Kapitel 6.2 & Kapitel 7 & Kapitel 8.1 - Der wilde Räuber Donnerpups. Die Räuberprüfung
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab77e164b46afe9ddd759f0777262c5d11e023d3e8c62fc1003a34e688d13145. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/DEWM20455576.
Kapitel 8.2 & Kapitel 9 - Der wilde Räuber Donnerpups. Die Räuberprüfung
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1811a18a16b21dbeeca7715adc3b05d9a6f511e194228920fa49e0d9f0a720ba. 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/DEWM20455577.
Der wilder Räuber Donnerpups. Die Räuberprüfung
Der wilde Räuber Donnerpups - Überfall aus dem All
Kapitel 1 & Kapitel 2.1 - Der wilde Räuber Donnerpups - Überfall aus dem All
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b748192677b3c630b2816a5effc5e92de056452dc3619327eafae47a1b6873. 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/DEXR10526821.
Kapitel 2.2 & Kapitel 3 & Kapitel 4.1 - Der wilde Räuber Donnerpups - Überfall aus dem All
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a2ae560f3eed5c47de3dba87ce6128a2b00df6435dbce1a174d70d54f4fd56. 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/DEXR10526822.
Kapitel 6.2 & Kapitel 7 & Kapitel 8.1 - Der wilde Räuber Donnerpups - Überfall aus dem All
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5a3297f241e201a0668277fc6bc47ed7f48604e8b17ef58e9ba99c185a8cd3. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/DEXR10526824.
Kapitel 8.2 & Kapitel 9 & Kapitel 10 - Der wilde Räuber Donnerpups - Überfall aus dem All
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b0d6c7f167553b43c958d32f078ec7a71f69a0789de86e5dc183745da7905c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEXR10526825.
Der wilde Räuber Donnerpups. Überfall aus dem All (Band 2)
Der wilde Räuber Donnerpups – Freitag der Dreizehnte
Kapitel 1 & Kapitel 2.1 - Der wilde Räuber Donnerpups – Freitag der Dreizehnte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5246c05882c1187e30ff05ac509e5269a4a13686a65df5939f231966fe9b6ca. 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/DEXR10528135.
Kapitel 2.2 & Kapitel 3 & Kapitel 4.1 - Der wilde Räuber Donnerpups – Freitag der Dreizehnte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8245285afcc1e2a64b9385b9206e30aa886cfee79fd7f87cfba686e7a2d203a. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/DEXR10528136.
Kapitel 4.2 & Kapitel 5.1 - Der wilde Räuber Donnerpups – Freitag der Dreizehnte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f67410903439ac06c9b5b3113254c0ee1dedb9e8d4ac300ca2643dacd49993. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:10:59Z), 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/DEXR10528137.
Kapitel 5.2 & Kapitel 6 & Kapitel 7.1 - Der wilde Räuber Donnerpups – Freitag der Dreizehnte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95659d73cbc9b70a1144fc8cf1710cf7ec98073d07380af1527f228130a70c3. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/DEXR10528138.
Kapitel 7.2 & Kapitel 8 - Der wilde Räuber Donnerpups – Freitag der Dreizehnte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f9f268adaef1f3e37d6427cbe6263e32f135390f8f60f6c0761455488746bf. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/DEXR10528139.
Der wilde Räuber Donnerpups – Freitag der Dreizehnte (Band 3)
Der wilde Räuber Donnerpups – Der Räuberschatz
Kapitel 3.2 & Kapitel 4.1 - Der wilde Räuber Donnerpups – Der Räuberschatz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9610a3fdf43cd61cc36efede762e99d4a4b87bbb415c7c6b381c8adc55225064. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/DEXR10526845.
Kapitel 4.2 & Kapitel 5 & Kapitel 6.1 - Der wilde Räuber Donnerpups – Der Räuberschatz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4be182d9e1f6762cfa2b8f4dee7f9bd6e51d90770d68b26cb35620ecb2b34f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:00:58Z), 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/DEXR10526846.
Kapitel 6.2 & Kapitel 7 & Kapitel 8.1 - Der wilde Räuber Donnerpups – Der Räuberschatz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5a57edaf8b7b8f8224a6e6269f64c5c29c91faa32faf7aca35609ff0fbe48a. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/DEXR10526847.
Kapitel 8.2 & Kapitel 9.1 - Der wilde Räuber Donnerpups – Der Räuberschatz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9af32e960310cd76470eb7b12bb0c483d5f242d7c5b78dc36c4e251e383eed5. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/DEXR10526848.
Kapitel 9.2 & Kapitel 10 - Der wilde Räuber Donnerpups – Der Räuberschatz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7baedb50a160712a43c51e9dc18ea07f0130908d635206f562d2cf9492e9fd58. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:08:49Z), 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/DEXR10526849.
Der wilde Räuber Donnerpups – Vier superwilde Abenteuer