Marcus Pfister (born 30 July 1960 in Bern, Switzerland) is a Swiss author and illustrator of children's picture books.The Teacher's Calendar: The Day-By-Day Directory to Holidays, Historical Events, B
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 0x89e1575f0df5a8c853f2395562241654748140b8d1429a862787218bb6f372a0. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e8e2ca9a-9712-4873-abe5-3e639c3e993a.json and https://artists.proofprofile.net/proofs/artist/e8e2ca9a-9712-4873-abe5-3e639c3e993a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
4 Hoppel-Gschichte - Mundart-Geschichten von Marcus Pfister
Der glückliche Mischka (Schweizer Mundart)
Der Regenbogenfisch (Hörspiel mit Liedern über das Teilen und Abgeben)
Hoppel und der Osterhase (Hörspiel mit Liedern)
Regenbogenfisch, komm hilf mir (Hörspiel mit Liedern zum Thema "Helfen braucht Mut")
Mats und die Wundersteine (Hörspiel mit Liedern zum Thema Umwelt bewahren)
Der Regenbogenfisch [Der Regenbogenfisch, Geschichtensammlung 1, und andere Geschichten (ungekürzt)]
Kapitel 1 - Der Regenbogenfisch - Der Regenbogenfisch - und andere Geschichten, Geschichtensammlung 1
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 0x57145964e420fc19efbe5ac4fdeaeaa078a1220289a8e9afa7e1abd2171b9bc9. Chain 2 (Bitcoin): anchored in block 957699 (2026-07-12T11:51:06Z), 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/DEXO12489003.
Kapitel 2 - Der Regenbogenfisch - Der Regenbogenfisch - und andere Geschichten, Geschichtensammlung 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9491a9791807562e135c798117f81d33c88569c90505da1cb1665f52a0ed40f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/DEXO12489004.
Kapitel 3 - Der Regenbogenfisch - Der Regenbogenfisch - und andere Geschichten, Geschichtensammlung 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8451bb5354cad4cda0d3dc1cfe8faf2bc4c63a383cf888f5aefb41e522890cf. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/DEXO12489005.
Kapitel 4 - Der Regenbogenfisch - Der Regenbogenfisch - und andere Geschichten, Geschichtensammlung 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37fd03a94d0176d88243a8527d53fb136a8086cbbcc15a4dbd94aada18fd9f2d. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/DEXO12489006.
Kapitel 5 - Der Regenbogenfisch - Der Regenbogenfisch - und andere Geschichten, Geschichtensammlung 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8254662f8e205dbc004af4b79318300ff4d80a6faaea54f2da309bc91f6e914f. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:10:43Z), 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/DEXO12489007.
Kapitel 6 - Der Regenbogenfisch - Der Regenbogenfisch - und andere Geschichten, Geschichtensammlung 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380d8060d48d72856b12b1061c36031aeb71e6708af472d0210da30921aacb68. 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/DEXO12489008.
Kapitel 7 - Der Regenbogenfisch - Der Regenbogenfisch - und andere Geschichten, Geschichtensammlung 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f68c3c0848ea26d650fb8c6b499cb555e6d719aecc06a76acc4ad9bc58fbb1. 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/DEXO12489009.
Kapitel 8 - Der Regenbogenfisch - Der Regenbogenfisch - und andere Geschichten, Geschichtensammlung 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3c3556dd4382f7d684578c91897bae48e313c956b5b1b4a07250805ef566af. 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/DEXO12489010.
Kapitel 9 - Der Regenbogenfisch - Der Regenbogenfisch - und andere Geschichten, Geschichtensammlung 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b77f95d6497cdf5d400e2b5cbf890666553543810d33c3cd55b3feb072d72b. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/DEXO12489011.
Kapitel 10 - Der Regenbogenfisch - Der Regenbogenfisch - und andere Geschichten, Geschichtensammlung 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca8cfaea094ba1a9ba40c809dd9409fbd1c15bee7ce918c594cfe0b5eb8fac6. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/DEXO12489012.
Kapitel 11 - Der Regenbogenfisch - Der Regenbogenfisch - und andere Geschichten, Geschichtensammlung 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51655469e8feb8c2e5fc614c9242157c81fa83fba0e7924fa723fead9005a729. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T07:21:40Z), 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/DEXO12489013.
Kapitel 12 - Der Regenbogenfisch - Der Regenbogenfisch - und andere Geschichten, Geschichtensammlung 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32ddad1db9c41f15fb6614ece5eb2a569c8b1ebb277e7467dcb9f9186302875. 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/DEXO12489014.
Kapitel 13 - Der Regenbogenfisch - Der Regenbogenfisch - und andere Geschichten, Geschichtensammlung 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6b9f49484ca5cc4d9f565ba09ca960cb28737d8bcc554838af59b5c8b919c2. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/DEXO12489015.
Der Regenbogenfisch entdeckt die Tiefsee [Der Regenbogenfisch, Geschichtensammlung 2, und andere Geschichten (ungekürzt)]
Kapitel 1 - Der Regenbogenfisch entdeckt die Tiefsee - Der Regenbogenfisch - und andere Geschichten, Geschichtensammlung 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb614fab7ec9bbfc1bea5a58bc27fc6f75e31e0c25882e18fc2417a4cc60eca61. 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/DEXO12489017.
Kapitel 3 - Der Regenbogenfisch entdeckt die Tiefsee - Der Regenbogenfisch - und andere Geschichten, Geschichtensammlung 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf0af73061c26b15cb434b9fc573015ec82b14da3402e33f6ddbcbddaeddc9a. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:47:54Z), 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/DEXO12489019.
Schlaf guet, chliine Rägebogefisch - Ab is Bett Nils!
Weißt du, was Glück ist? (Hörspiel mit Liedern zum Thema Glücksgefühle)
De Mooiste Vis Van De Zee Helpt Een Ander (Onverkort)
De mooiste vis van de zee sluit vrede [De mooiste vis van de zee, Deel 3 (Onverkort)]
De mooiste vis van de zee is gelukkig niet bang meer [De mooiste vis van de zee (Onverkort)]
Der Regenbogenfisch entdeckt die Tiefsee (und andere Geschichten)