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 0xa4a7332b0b9a6a483370be2d7b1b7bdee43e8433ef717fde67bf7de24c2e2fa9. 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/562da36d-4751-4128-9ebb-1b72cf3e818d.json and https://artists.proofprofile.net/proofs/artist/562da36d-4751-4128-9ebb-1b72cf3e818d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lente [StoryZoo Vol. 1, Deel 4, StoryZoo Vol. 1 Aflevering 4 (Onverkort)]
Slapen in een tent [StoryZoo Vol. 2, Deel 7 (Onverkort)]
De dierentuin [StoryZoo Vol. 2, Deel 1 (Onverkort)]
Kleuren [StoryZoo Vol. 1, Deel 8 (Onverkort)]
Op school [StoryZoo Vol. 2, Deel 11 (Onverkort)]
In bad [StoryZoo Vol. 1, Deel 6 (Onverkort)]
StoryZoo, Vol. 1 - Aflevering 5: Verjaardag
StoryZoo, Vol. 1 - Aflevering 3: Huisdieren
StoryZoo, Vol. 1 - Aflevering 10: Groot & Klein
StoryZoo, Vol. 1 - Aflevering 9: Vervoermiddelen
StoryZoo, Vol. 1 - Aflevering 1: De Boerderij
StoryZoo, Vol. 1 - Aflevering 13: Lekker Slapen
StoryZoo, Vol. 1 - Aflevering 12: Doktertje Spelen
StoryZoo, Vol. 1 - Aflevering 8: Kleuren
StoryZoo, Vol. 1 - Aflevering 7: Instrumenten
StoryZoo, Vol. 1 - Aflevering 2: Speelgoed
StoryZoo, Vol. 1 - Episode 1: Auf dem Bauernhof
StoryZoo, Vol. 1 - Episode 2: Spielzeugladen
StoryZoo, Vol. 1 - Episode 13: Schlafen gehen
StoryZoo, Vol. 1 - Episode 10: Groß und Klein
StoryZoo, Vol. 1 - Episode 5: Geburtstag
StoryZoo, Vol. 1 - Episode 6: Bad nehmen
StoryZoo, Vol. 1 - Episode 12: Doktor spielen
StoryZoo, Vol. 1 - Episode 7: Musikinstrumente
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 0xf1710d51d8fcd8e634c239c343c5c34b26e3419763945d5401bfac3ce3ab1a03. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:40:28Z), 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/NLHR51842448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1dfeb3ecdd76fa14e6c3749fc44a35ab54872a6b3fdb6ccdf4360ef1ab60d4. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/NLHR51842449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e59bc9e9c81783180bc3fd4acc0a289d0ba241c02e118dfac2fe7dcef32737. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/NLHR51842450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9088b504796b42e1a2000e5c8830a539ec2a31bc76ffd4826cee11cc6ecd8ea0. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/NLHR51842452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399a404a759ace57714891f65ad5b599d63a2f301140d35fc95ab4ae33b4bb44. 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/NLHR51842453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68874758ac4350d3dd060b77310750aafaf0e083f0338f05d7d1b09369566091. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/NLHR51842454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774f14ef360081b2cca87a7d6da3e939235f449717d9d97c705cf7b85cbe0db7. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:19:54Z), 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/NLHR51842455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba7f14bd74f076ca191dbb22cf6b83c7a05eb3c16fda8a45fd606e4f5d80ef8. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/NLHR51842458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d6cb0c68f2a9af5f4e9d81712d45257aa10cae91f81b91ec0f59f7ca1f372a. 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/NLHR51842460.
StoryZoo, Vol. 2 - Aflevering 4: Brandweer
StoryZoo, Vol. 2 - Aflevering 6: Pretpark
StoryZoo, Vol. 2 - Aflevering 9: Sneeuwpret
Storyzoo, Vol. 2 - Aflevering 10: Verdwaald
StoryZoo, Vol. 2 - Aflevering 11: Op School
StoryZoo, Vol. 2 - Aflevering 3: Koekjes Bakken
StoryZoo, Vol. 2 - Aflevering 1: De Dierentuin
StoryZoo, Vol. 2 - Aflevering 12: Museum
StoryZoo, Vol. 2 - Aflevering 7: Slapen In Een Tent
StoryZoo, Vol. 2 - Aflevering 2: Met De Trein
StoryZoo, Vol. 2 - Aflevering 8: Verkleden
StoryZoo, Vol. 2 - Aflevering 5: Supermarkt
StoryZoo, Vol. 2 - Aflevering 13: Vakantie
StoryZoo Vol. 2 [StoryZoo Vol. 2, Nederlands (Onverkort)]
StoryZoo Vol. 1 [StoryZoo Vol. 1 (Onverkort)]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544335eb8274056a50b02fd3897b56fe8262e14c5b222d91dec61935d87452f1. 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/NLHR51950983.
StoryZoo, Vol. 2 - Lied 6: Im Freizeitpark
StoryZoo, Vol. 2 - Lied 11: In der Schule
StoryZoo, Vol. 2 - Lied 5: Im Supermarkt
StoryZoo, Vol. 2 - Lied 14: Hop Hop Lied