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 0x98f5afcd85e64fc055e7f711db8cf35a7f52de331b75907714474f3e62723871. 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/ac27683f-fc5c-417b-978a-f3b5535da7da.json and https://artists.proofprofile.net/proofs/artist/ac27683f-fc5c-417b-978a-f3b5535da7da.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 0xc3c551c02e9e5f7f47232749bb9db5a9520bb37744ddbfcfd0358c5eeeb594f0. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/DEPU32400583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c4ecf8739bad1684078e2bf1038da3c2a8163f622a81ba9cd58aea48f783e4. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/DEPU32400584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe733b8ffcfe0f2e9d0721c3ea8153d759191bf5da3b5949dcc58168cbf4134. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/DEPU32400586.
Detektei Cleo Fischer, Folge 10: Unter Schlangen und Hunden
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa500adc3fb4eb5304898ee356bc6c1150896392bed0fb4f8b58c0741dd348f11. 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/DE1K92300018.
Detektei Cleo Fischer, Folge 11: Die Wahrsagerin
Detektei Cleo Fischer, Folge 1: Brunzi Dummbatz (Teil 01 von 02)
Brunzi Dummbatz (Teil 01 von 02) - Kapitel 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dec2350870155a4e77008abcdda2c6c04f596241f8371f87d7f000a4149f360. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/DE1K92300000.
Detektei Cleo Fischer, Folge 2: Brunzi Dummbatz (Teil 02 von 02)
Detektei Cleo Fischer, Folge 3: Das große Blubbern
Detektei Cleo Fischer, Folge 4: Das Fußballturnier
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bbb97b950c0d0eaca596f8f02d141f37c1bf5151c092e7622fec0e1fe1eb064. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/DE1K92300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476c0dce6a1aab0e7d6274b5d024c42ff288f9c0bd05efe40c7311366eb993f5. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/DE1K92300007.
Detektei Cleo Fischer, Folge 5: Die Erpressung
Detektei Cleo Fischer, Folge 6: Der unsichtbare Gast
Detektei Cleo Fischer, Folge 7: Die Rüsselgeister
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8175540bf594cd2264d54d777a05feafa9be3084757d5573d0606983e2267e. 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/DE1K92300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6ee4a2f0443ffd96c16565a7f20718679f1e353b254d4b9e633ebe4e62a89b. 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/DE1K92300013.
Detektei Cleo Fischer, Folge 8: Der Spickzettel
Detektei Cleo Fischer, Folge 9: Das Experiment
Maustisch, Folge 13: Warum ist Frittieren so lecker?
Tierische Doku, Folge 5: Tierheim Düren - Fundtiere (Teil 2)
Maustisch, Folge 17: Ringe - Donuts, Sesamringe, Bagels
Maustisch, Folge 19: Seemansgarn Spinat macht stark (Popeye)
Maustisch, Folge 20: Warum essen strenge Muslime keine Gummibärchen
Tierische Doku, Folge 6: Tierheim Düren - Vermittlung Hund Boba (Teil 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb796564e9d430f39a797dcc953c539d16f3c570542cdbdbf39e9b7d8acb458a. 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/DE1K92300123.
Tierische Doku, Folge 7: Tierheim Düren - Vermittlung Hund Boba (Teil 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2344e15c56d111fd7f0e8d8e9311edfa5e6eec466cd306b7ad9443c97fe97f0c. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/DE1K92300124.
Tierische Doku, Folge 8: Tierheim Düren - Katzenkrankheiten und Quarantäne
Tierische Doku, Folge 9: Tierheim Düren - Gassigehen
Maustisch, Folge 1: Polen (für Osteuropa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3381947d9b5fe6cf3dd03e9d8d261aa62d58044dd75a2e8cb9e5e603db2b4ac. 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/DE1K92300127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa27c3910e7b404068c56c86ba7cdf31b54c46519e85a094562a41d5cd2d4020d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DE1K92300137.
Maustisch, Folge 18: Wackelpudding - geht's auch ohne Gelatine?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1383930b03616faf3b734db469e97c3d9d6dc6ca7de08552b00a8cdc2dfa16. Chain 2 (Bitcoin): anchored in block 958882 (2026-07-20T12:45:27Z), 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/DE1K92300144.
Tierische Doku, Folge 4: Tierheim Düren - Fundtiere (Teil 1)
Tierische Doku, Folge 1: Tierheim Düren - Das Schwein Aladdin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a5d065f56e7af0167fdc869ae5768d4dca4bef044c2a9328c253e5a0cb3c4b. 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/DE1K92300118.
Tierische Doku, Folge 2: Tierheim Düren - Katzenfalle (Teil 1)
Tierische Doku, Folge 3: Tierheim Düren - Katzenfalle (Teil 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c607a2a4529ef0a1af4a76d1ab84e813e8adfb5f522b20026694557d414de2e. 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/DE1K92504784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fcec12ca06ec20fbc445384b054c1f1555dfacde21cf69bd164d9265b0e9594. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/DE1K92504785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0458575647c3fbbdc0cc79c20c9ba09eb30cff56cc1be3899791e360ab9975d. 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/DE1K92504788.
Zeitsprung, Folge 15: Bilder einer Ausstellung
Zeitsprung, Folge 14: Der rosarote Prinz
Zeitsprung, Folge 12: Die geheimnisvolle Mühle
Kackgeschichten, Folge 9: Flatulogie - Pupse/Fürze
Kackgeschichten, Folge 6: Wildtierlosung in der Stadt
Kackgeschichten, Folge 5: Kacktagebuch der Wasserschweine
Kackgeschichten, Folge 4: Schlangenforschung (Teil 01)
Kackgeschichten, Folge 35: Koprophagie - Kacke fressen
Kackgeschichten, Folge 34: Der Kackpropeller der Flusspferde
Kackgeschichten, Folge 30: Faultiere haben Motten und Algen
Kackgeschichten, Folge 2: Pipi (Teil 02)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe497f48d1f3e6b562ffe770824b38a0a6cf94aa3529b8ffab0024b5f7d7984ef. 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/DE1K92300074.
Kackgeschichten, Folge 27: Alpakas sind Heimscheißer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180d2ec6d1cb41928a8c65c61a4dcc4ea888f7e099489b63707cdf54dad7ab5c. 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/DE1K92300098.
Kackgeschichten, Folge 24: Schlangenforschung (Teil 02)
Kackgeschichten, Folge 22: Papageienfische sorgen für weiße Strände
Kackgeschichten, Folge 20: Kuhdung als Baumaterial
Kackgeschichten, Folge 1: Pipi (Teil 01)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6928640902eb0b85d5712924565d2f825a41453f92813c38528c23ef6b2eda98. 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/DE1K92300073.
Kackgeschichten, Folge 19: Positionierung von Kot
Kackgeschichten, Folge 18: Seekühe pupsen sich durchs Wasser
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf98b9918d64f0fc28090f18dfa1ba43cd4c86637dc1f27801fe3ed10e0c824. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/DE1K92300090.
Kackgeschichten, Folge 17: Wie gehen Fledermäuse aufs Klo?
Kackgeschichten, Folge 16: Kleinste Schnecken der Welt
Kackgeschichten, Folge 15: Störche bekoten sich die Beine
Kackgeschichten, Folge 13: Wer macht eckige Haufen?
Kackgeschichten, Folge 12: Vogelkacke (Teil 2 von 2)
Kackgeschichten, Folge 11: Vogelkacke (Teil 1 von 2)
Gedankenspiele mit der Maus, Folge 9: Warum wird in manchen Videospielen gekämpft?
Gedankenspiele mit der Maus, Folge 8: Wohin kommen Koalas nach dem Tod?
Gedankenspiele mit der Maus, Folge 7: Wie ist Gott entstanden?
Gedankenspiele mit der Maus, Folge 6: Warum gibt es Lügen?
Gedankenspiele mit der Maus, Folge 5: Was war zuerst da - Huhn oder Ei?
Gedankenspiele mit der Maus, Folge 4: Woraus bestehen unsere Gedanken?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330aef3c78d5e90d5b5f8f19ed3649ac7f82941ae5675df5e0f45c4d5d5afd54. 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/DE1K92300111.
Gedankenspiele mit der Maus, Folge 3: Was passiert nach dem Tod? Wie ist das, wenn man tot ist?
Gedankenspiele mit der Maus, Folge 2: Was ist das Nichts?
Gedankenspiele mit der Maus, Folge 1: Was ist der Sinn des Lebens?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ff2ce5c1a2d392a76d6d13cb3fdf7e7fd8deb3269cbffed86cd52cc7d44963. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/DE1K92300108.
Gedankenspiele mit der Maus, Folge 10: Warum schmeißen wir Müll ins Meer?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92186bfc8b40347b9fbe512642e258fc97f91ab3fa03036ba22fa87293d4600. 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/DE1K92300117.
Zeitsprung, Folge 18: Die Raben von London
Zeitsprung, Folge 19: Das Planetenmodell
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d23d735ab3fd305568d3a9ef99d01a110e946518aba55e04d00fafef2ceb51. 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/DE1K92300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab10f4e5099542503cbf3718d7e0725d3239562395d3ab06773b9ef9ba15a63. 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/DE1K92300023.
Zeitsprung, Folge 21: Glitzer- oder Klimperschnee
Zeitsprung, Folge 22: Verirrt in Venedig
Zeitsprung, Folge 23: Breakdance im Dorf
Zeitsprung, Folge 26: Yoga - Affe und Löwe
Zeitsprung, Folge 2: Die Brücke im Dschungel
Zeitsprung, Folge 3: Kung Fu und Seifenblasen
Zeitsprung, Folge 4: Das geheimnisvolle Tor
Zeitsprung, Folge 7: Der eiserne Dichter
Ohrwürmer und Kinderlieder mit Eva und dem Elefanten