Van Herpen is a surname. Notable people with the surname include: Iris van Herpen (born 1984), Dutch fashion designer Jan van Herpen (1920–2008), Dutch journalist, publicist, and editor Jos van He
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 0x945e7e11f456b88099477817054511608c7f17f598e127455bc2071b3f3ea40b. 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/cb8f8cf5-93f3-485a-9e61-f345b363967e.json and https://artists.proofprofile.net/proofs/artist/cb8f8cf5-93f3-485a-9e61-f345b363967e.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d972750f06881c65af32c29d2a5ef5b9240d17d4521e4e2ed540d6c9e10ca73. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH7812362502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14dbfe259b11d91d61213ed8a0f022296abd60be9936b98a1ba3d0ace153410d. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-21T23:05:35Z), 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/SE6XW2324493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed69b62838d7026deb75868c183bb958a7e8e02c3d90f60c045843a9e8e2ff2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NL8NY2300055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3db16af4826d3dda74af536f964a70c340883097799814a7ea26cef8f4dd08c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NL8NY2300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0537da66cf7e587f92cec20c48e6583a86432d61609c7dd48c1fab631dd91d51. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CH7812351539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe98420c0c8a594da687d28aa1a6e94e1c428ea6eb89fa3c0880e38f2a169796f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CH7812349563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f7b9296584affd23804171a6336c855bb912d94513693666b3ac23ff274ad0. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-21T17:32:26Z), 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/DK4YA2302601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df66bfa9964aa6ab7773bb08e0a1ee0be6fbe8d1e4a42f45e31e76b379a9c9c. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/NLT2H2200651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x592bba4c83f9595cda388f8e86a77951ad7cbeb5d90da018bbfd46fddaa17ea7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAGG2202692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305ba44a3aaa6f3f60370575997bb6d0d263d4dfff3cb610f7ce9bab7edebf60. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAFZ2272079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x731ff9fa9aa323b9f9b1296b76842029670a31a7abb8176cd803e271446182d3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAFY2153588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd884e982127c2b751c98908fe71fea4d8e0593cb6c4734a3728069e1ff7233f5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CH7812195863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3fd03b78c910318576a149276bd6a9fb0e1e77c25fa16fa4a44cb7242bc6f1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKQU2131848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf186fc3d7e170bbf0b016be4653c45d9ba42aaf73f0bd99cc9cd4c477f27d49. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBWUL2457446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e7611e04c245cf0f28b265cbeac8affb283d6b5afe50d7cd0450ed0e7ea18d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CH7812403681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac50c364d60bbad21ffcf5f519643a550a6298a3d8353820ec3963e059e65f7c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH7812403682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2105b97b372cb751c2702d24459653596716f3e59cf37937cbe32c9cf6b0d362. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CH7812402907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab8bb44941ea4415591f1ef6c4e7a0af82d6aed2547c789580676be7e243931. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH7812401888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbfb985750e4cfe92787fc856138e91b605c825997f8fbc6641acc622d4565b9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SE6I32482852.