Dumar Aljure (1928–April 5, 1968) was a Colombian guerrilla fighter and political figure. Early life In 1928, Dumar Aljure was born in Girardot, Cundinamarca, in Colombia. His father was a shopkeepe
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 0xf20e36767d8e3ae15e0391cdfe7b2da859572e429964adf043068f61b346c03b. 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/afe50339-eced-40fd-947a-55d37e0b9a99.json and https://artists.proofprofile.net/proofs/artist/afe50339-eced-40fd-947a-55d37e0b9a99.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 0xc51ddf29eb57bd10d22b7e25fbe2bcda3c474f7da4d7866d7c7b1c0fb8fb4b7a. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/COFC19406502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616334d8bf18c488d53e3c18a2214395ceaafd44a93af94cf572a65bc613e61d. 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/COFC19406505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ee4902a68103c5835baef4a5280e56f2192f4da691864eba7c4e64ecea8fa7. 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/COFC19406510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39337c6549ae0beaa3db199c2da911c0b2ce9110d7c38002a878f1f3774809f8. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/COFC10611204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a6977203f28658e4ef8279a41b86bec33086d2501c6df8a8b84b5892b81fdf. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/COFC10611205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03aec2ed7ee2a39227731b181bdcc25cbd4c22e84562019e5471ab9fef3bb6d7. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/COFC10611209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25423c010c25e6b844b6af21b1d4ea5404b3a73c7dd6d31523677c1866a50af9. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/COFC10611214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135b0731906078cdba6bb0b78c9b647bfcedbf972833a123a4337aec044b1de1. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZGLS2596280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d5893bb245460e7afec0bdc1cc2b840ec999e86836bdc3bf21fd1a0318c103. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/QZGLS2596282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ce7f770452535c194d3f22d3ab5b19214317a74e8b75a44284a68d3a3710e4. 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/COFC18505601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba1f4c18513f1e62298e38363e6b08df237da3d136d4a714257a695d872ecd9. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/COFC18505610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1de1df5ba673347b7ba87a87795a70f573ed3c1f8fc5ea10b7a1798c3892a8a. 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/US7VG1704783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e04aab177d2175408d10111f09c4f55cedeff2e598e62b98f3f3cfa8ae41ad. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/GX3Q92472230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f5e78e1a7ddd0f72755656271ee23731a0f56680dd3b92777d88bbd8e95a2e. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/GX3Q92472232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4678ff10853b374ae730937d5ad2ff0c9ca2267dedae7f88f39ec131027e8fde. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/US7VG1704784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe903abe7a3fb4554708efce3e13892b614866b2c13e6754b6d823d143dff1de. 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/COFC19600206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1cbdce5f3fe8aecdd846013f894501bbe95d4cce69adc3b0434aa724e954fd3. 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/COFC19007012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e24ada39d599140a322262cd302902d5b56346abeec9de63e11fef017821873. 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/COFC18102604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5239f785b389e50f2085d5e3e7e37e3aa6703e8b79722134264aa3aa2cdc814. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/COFC18102606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191668dcbab5a077573eee59c85354bf0dc98a928ac79fe62d5ef326daa576c0. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/COFC18304709.