Jeremías Tobar Llevul (born 4 March 2006), known artistically as Jere Klein, is a Chilean singer and composer of reguetón, RKT and latin trap music. He debuted in 2020 with the single titled "Me la bu
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 0xd2adec7daa4129ddc4b7dec72ddea432c0ea222cc94f3ae101bbf776958b7a7f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1d4fe92d-87e1-4f65-bf8f-5ada58561177.json and https://artists.proofprofile.net/proofs/artist/1d4fe92d-87e1-4f65-bf8f-5ada58561177.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 0xcf03e233dd28c4b50af296afd89fd35b2a4132caafa960ccd34bd8ae5e385146. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMDA72363047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c99935468038094375011741df742e20030dc73e6c3e3bc6feebb13af51ebe. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZMZ92399544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ee41a04397713cb2c7fb963887216c95a7c6f4aae101dc2769b75b97783baf. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM7282387747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2bf2fb0fd149ca3f1b8e3a99de7ab458a115f0fa078cda9340b607c5c2c363. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/UYB282393001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d7ab5e6bf2583426f22e95e6f336d069cfb92417b39c99beb99eaa07a380eb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMFMF2334326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318f62da2676585d015a87e52b6c1fe88087771b1792581b46814242f6168197. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMFMF2334327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d236b6de8b73fd6aa54c4bbb2e3d46ae7b2103342313f76020321567685d03. 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/QMFMF2334328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b7fd4ead2089ea6ea652f6ace4cd8ec25629e1842a23985c87642f4322b680. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMFMF2334329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0f039bcd3c700e277b07c2f603b6bb252888e678df41d92c77ec6dcece95c6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMFMF2334330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730510c4be19a437ad7753571b9525746f002f382fb21935f2828dbd13bd702e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMFMF2334331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecedda3a6f74a26e35b08e2e17209c1f059c5a23c9da71597979eb18aa3fdf83. 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/QM4TX2506142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc3bafa2952d2b3b697afbbe7a22ef80c88e6dc437e864bb516ddc65ac73816. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM4TX2506237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e24fcad1516513a7b35a305e4e031b1341b07626d3d24edabc905a0eab04f6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM4TX2506241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8934a0a15b3a5e9e59d239b0fd671b527fa9baaecb373fd28162732fffac403. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US7VG2337657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de386b71b601c56cebe67ecc5bf588380b19c101204601c68c8cec6a3f13c1d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNJV2566131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc325892e1df5e2fa271ea40ed9b25b51b3edcc968b5bf0a3d3d7466f063ba54. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNJX2116168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8e930a170a49c40eccb52593612fbae86e84f17f3de61d1cea3de68ff44d36. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CLA1D2300086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe042759d01fe69b69ad61af6c31322fa3ccbdc38ed0310b41cf73b71c180a07f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZW9K2367494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f036fe5d1c25a94c3a6aa79331e9925492e90876028323fa0e439bd6d16066. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZMEV2339687.
Bastardo (feat. Ñengo Flow & Jere Klein)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eac7d3aca3be7551f152af45e454dd9f87c77e6a79593560f4d04d1b024aede. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USLD91757181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ab50fc5176994c47d938d8b14e721be67e88ab04c7f098486ca4b13aa2a6d9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZW9N2264701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011bd8a4545b79e4207f8bf4a4632033ca00cac36234882d0318b7b969baa4f9. 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/QZW9L2494693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fcebd873f5cb2e074a356d1272866d579c510caa6505f1c24d6344a40b4b398. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZW9M2283520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4ec6d257eb2ffa0d5378f20db9888c0a893f9732e5ec13d4fb831926ee6114. 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/QZW9M2223470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758137ba8359584a395e8593ea91a63214b88bbd8dd4a547d56930781920db85. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CLA1D2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50bab87069e0a866f0c56b0abac32edde7201bc0929c3cd8866935131cb57650. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZW9M2259278.