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 0x3d343b21d134869adc608e1ab0b0153d99c82fed2a52814d009192730bc96530. 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/b17fbaf4-c9a6-4b26-afe0-75fe4555f544.json and https://artists.proofprofile.net/proofs/artist/b17fbaf4-c9a6-4b26-afe0-75fe4555f544.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Voorleesverhalen op de boerderij - Fien en Teun (Onverkort)
Hoofdstuk 4 - Voorleesverhalen op de boerderij - Fien en Teun
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 0xad0459ffbe15e7745594c5d3ea09aec75fda49c7fe721362d9413cff032bdfd0. 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/DEXN82330415.
Hoofdstuk 5 - Voorleesverhalen op de boerderij - Fien en Teun
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906efeb8666877f504ca9a28b486100485255ef6e0a956af52b99f5ee99c5424. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/DEXN82330416.
Hoofdstuk 6 - Voorleesverhalen op de boerderij - Fien en Teun
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad04478b7132a4b7fa7b3baffcd0b692e41fa7578273bf072d6820012aec137. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:58:56Z), 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/DEXN82330417.
Hoofdstuk 7 - Voorleesverhalen op de boerderij - Fien en Teun
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b50bfd3eae3927a3bebf46d1bcecf7fc8005c42486194f75bc067b2a668ccd. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:04:59Z), 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/DEXN82330418.
Hoofdstuk 8 - Voorleesverhalen op de boerderij - Fien en Teun
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc07af221a7cd42a20f84b7fadf5d1567ae1052bd5b7f510fc72c718e060355c. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/DEXN82330419.
Hoofdstuk 9 - Voorleesverhalen op de boerderij - Fien en Teun
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92442f9a784749de9cc62ee97dba450417ca5e968cce40edbff9b8392fbae17c. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:46:43Z), 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/DEXN82330420.
Hoofdstuk 10 - Voorleesverhalen op de boerderij - Fien en Teun
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7db3f6afdc81d46b54d907360959a4aec966db99ddc91356c3f0d30a952130b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DEXN82330421.
Hoofdstuk 11 - Voorleesverhalen op de boerderij - Fien en Teun
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4727a7a1f6ba77276de2a28f6605cbbe5ecd2d2814607e43d85bcfedbf18e970. 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/DEXN82330422.
Hoofdstuk 12 - Voorleesverhalen op de boerderij - Fien en Teun
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1d8a618c231952afb06cbed39ebc722bbd4898c819fac65f2b360bcff0f28b. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:43:27Z), 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/DEXN82330423.
Hoofdstuk 13 - Voorleesverhalen op de boerderij - Fien en Teun
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81a86487353f81ae3a1d613edecd20371ae64aa0f151a7c1fee0bd4d3ad449b. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/DEXN82330424.
Hoofdstuk 14 - Voorleesverhalen op de boerderij - Fien en Teun
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e72aefb38d1f99acff8935d961349dc825a6e395f03bade53fabdae4485914c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DEXN82330425.
Hollandse avonturen - Fien en Teun (Onverkort)
Hoofdstuk 1 - Hollandse avonturen - Fien en Teun
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636f85315d6351a6f892a44a0e6a64238eb1977a642c01b892a6a97b22e53c8d. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DEXN82330254.
Hoofdstuk 2 - Hollandse avonturen - Fien en Teun
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14310d696376aa45f2281f599216a2632dfd99c15f9a40ba23b70c812ed7ae9d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEXN82330255.
Hoofdstuk 3 - Hollandse avonturen - Fien en Teun
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279c69afad95e345df3d6d205f907e2865d4f26022e9de1124e32675753ff227. 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/DEXN82330256.
Hoofdstuk 4 - Hollandse avonturen - Fien en Teun
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74fbf6816b31810ab3e065e60b75648a326d5e68f1858f5c1b00c76d70c5cecf. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/DEXN82330257.
Hoofdstuk 5 - Hollandse avonturen - Fien en Teun
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c5292fca567c5f2106440df8fd5b1ae57c470df0dbf32aecada9eeb07d8522. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEXN82330258.
Hoofdstuk 6 - Hollandse avonturen - Fien en Teun
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ed28de79f6075d736596117ac002b4f4f026210542c05b1b3241e8c1237857. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEXN82330259.
Hoofdstuk 7 - Hollandse avonturen - Fien en Teun
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bbb2503a953ed9b861087f30d2d761504685e9d0c183e3484e7f70dd8737e8c. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/DEXN82330260.
Hoofdstuk 8 - Hollandse avonturen - Fien en Teun
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398426dbeeb125988330f0ed1d1383ca0c59344b5ea8bb80c97e8323e551ec0f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEXN82330261.
Hoofdstuk 9 - Hollandse avonturen - Fien en Teun
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38ce40dd29518de14d874c0183875abad130a3210d5ce8fae0853d81fa74d06. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEXN82330262.
Hoofdstuk 10 - Hollandse avonturen - Fien en Teun
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c35a88a1a28d86322158505d3e221314b92357f21f5642a9c7f7e1b17ca570. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEXN82330263.
Hoofdstuk 11 - Hollandse avonturen - Fien en Teun
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7dca3c76b86608fcad1759a867904da8bcda24fc60cd7b17f58b5d4c904e7d6. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DEXN82330264.
Hoofdstuk 12 - Hollandse avonturen - Fien en Teun
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda74ce14df6409395a854034c7396c394980e6839ba595fbf8dfa38f2f079d6a. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/DEXN82330265.