Jetten is a surname. Notable people with the surname include: Jolanda Jetten (born 1970), Dutch social psychologist and a professor at the University of Queensland Mike Jetten (born 1962), Dutch prof
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 0x7b3cfaeead1b795edcc7be992fe4d590e4f4a56f50105f8861c94ed1c53a6cee. 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/f8185bb4-b4ff-4f45-b18f-1afb2a56a0d9.json and https://artists.proofprofile.net/proofs/artist/f8185bb4-b4ff-4f45-b18f-1afb2a56a0d9.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 0xd9fb465263ccc1d0519f700b5474b8f41dc65091b49689be7f3f8a687a0e05e9. 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/QZAMM1945098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f512250895d9f0ad1a1a7e170d268f6d04acc1be2956de4146480d12128ed46. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/QZAMM2031868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe60df42efe96b2480dd2cde36c02f16f467bf852fa558db8baaecd504721832. 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/QZAMM2045242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a32827eb0e7e7eedd59f1153b102401e778172884fd8ee0bce75cd399fa6058. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/QZDA72116353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x519ec7c8fc2a118573060e7eb6fa1f3d57cda272cedb1759f71c5794eb91258a. 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/QZDA82151297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d54e83641a946cbf2754a9b0182e9a35d92e0e3979758847933f666b0d1df1. 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/QZHN92186554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6ad7abdd39c138ed9db7432054d513d6a911934599d0c557f225c24c7dec58. 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/QZHNA2141680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229bfd01430e1726b21786cb1d21e2c61a8d63174ee0f61365e8a1feba37e0fb. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/QZK6L2168783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc438ffd700621fbf82943c3d0fd108f5511b7181dfca38c8651acec5208ea430. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZK6G2286423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6426bcc8946046acecbc58519899c56f580ed63f844eadc4520d1ab53da05a04. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QT3FE2507284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4054ec9e03520ef96eb72779511ace67d43155c7e1ffd7711f61f389b85625cc. 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/QZDA82082510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2dcd98d0670bd8da5715ccaab3a88ffdf80a2fd8cc9c141f1bea4e040f6092. 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/TCAEX2013341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd753a39e6ebedd02416ba23c333a05d74bba4fe6557619eedb99603aae64d28. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZFZ72089884.