Kemal Monteno (17 September 1948 – 21 January 2015) was a Bosnian recording artist and singer-songwriter whose career stretched from the 1960s to the 2010s. He is widely considered one of the greatest
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 0x4d6c9c20cdaa93cf6f4028677828c9c05a7fd280575733dd69dd0f9bc410ca84. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aa7cc54f-efc6-469c-8fd5-7ac5454bab4e.json and https://artists.proofprofile.net/proofs/artist/aa7cc54f-efc6-469c-8fd5-7ac5454bab4e.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 0x4840f8ced426ca1677392b98d258bbee2336705ded4355062b6019027b06e2f1. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/HRA047451213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68cb199b4710d2fdb30d392ee1632e24202553b90fb08694118ded530eba96dc. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:55:17Z), 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/HRA047517197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cea787b2a03e8cac15089af41e72ba4f7428b13086349e8fa208d8cede449a3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/HRA047751984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778b6bee03f7bd1a706bd6333d84c633a4453065688cf3a17d3a3d6d2de80eab. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:57:04Z), 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/HRA048327339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb362c4776c84a01064b7927179f5e5bb47608ef5c6de6466c4a6bd6f17cd1be7. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/HRA047527345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7c3339d91d13dcef05ebcb2ea170372b6ebccdf1cc6f072d0d63ddde3ad622. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/HRA040627342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812efe59a637345123b4814fe62f497f0f6758e57724a852d214e617409c4604. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BGA261848209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35c80638a45cf645c8440d74ce97f7ec12211d9fcc1be2d69e9c6d1ae74310e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BGA261848217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f9ffdd88444e94b10ae793a0a244061a62d9bb75450dd3b6afaf491e6ce76a. 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/BGA261848411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e4161aace9e6dba64d3035d19204f15e0e6b0c41536b2d32e27fd20ea0c253. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T14:05:53Z), 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/HRA040641863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210f4051de32506858d2dfc8e07e68eef06f5f0703ce43616657f03a5a30cd53. 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/HRA040041864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4301efca49dc4b7255eb8f0a9de6e7392fcff71fba6bb692895a8a4f2324bc98. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:37:59Z), 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/HRA040641865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb54afd7ca24b0c1805fd5ea5054ec6410b65dc0546521b42798d5a58e219b3. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:27:32Z), 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/HRA049531817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d1f20abd29f534236255bb0484d804d9990c3b4205cad20e6b93c22cdf709c. 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/HRA040547204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e3acc95844a4a60ce6e60c827ea50a011283389f4c3bad586e05e485a7cf5a. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/HRA040545726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43146f888b69d323abfcf331821ca6290163c51f1668fae96cfc150115f5712e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/HRA040959082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ead415d1e429d6756956d64474aa6606dd4102990b7784c4423a7f24c0c39e9. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/HRA040750824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f0e102071d1c2e6078a1f6dac2be1aa47833eed8f965539c54302ea971de6f. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/HRA040645179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a1f49f860bed756f90c15d6969eb5d9c7938164ccf904600d77ea1b89e6813. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/HRA041062525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235b28f7b0530baa38c0ebbdb6058918f627bdd846882a267e557faec7b36b9e. 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/DEKB72045873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f522b0fb8abaf0837863ff71c029359d348c61aca751248e669eeb3262aaf9. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/DEKB72045877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c44dc8b089dc929767805ad4ca09569e322c376942c167c3a54f98b23752ac. 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/DEKB72045878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9248d80eb99a325aad1fae7082dba231d1f9609bff842473e6b0c9c231e3c704. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:56:41Z), 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/DEKB72045879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd195915c44584b6d06d5c402b68499bf9b72bc388f7ddf4ae89a5fe519ba8031. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:40:09Z), 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/DEKB72045880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb609d316e48a37c0511858bc0a0222cf0afda24a75d4a586b5943ae75c095bbb. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/DEKB72045881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aec69c6b73e9c2275a2d7bd91a54fa4a808a5f130f50a89da02cd6b0d9833f2. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEKB72045882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96264365be5704a5df5996ee2fe555e9b773b80c2991b7de7e82413ab719cafa. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/DEKB72045883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4550e188ae5d8abde23cbc842a6121558f0e387955a6c9654f4f8a0d483dd650. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T02:52:24Z), 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/DEKB72045884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9286ad748726921d8d49fcac2cb62e514884941b42f0817fa4ade150edd6c613. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEKB72045885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386b032aad02220b89ccc9a5876634b8fead10829e15ddc2d8fa0650e2d80a7f. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:49:37Z), 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/DEKB72045891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd781f607a63e24643dd7a7dd3f737001b15644ffe248c1002bbaf3e8868895e3. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:34:26Z), 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/DEKB72045892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749a3674162735241dc8354ad5521425d68ea50fdd029c52b276082bee38bd4f. 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/HRA047632075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9287453424db89d5c184727bce045082ee25f74ee1f5d75160cde4b89c3db237. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:32:46Z), 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/HRA040025239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29caac507ed0e3d56f09b29a49d1df3e52bf2c16b42af09f094deff78abe8ba5. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/ATAJ12500338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd327f2d429fbc80226f5385621b7072d80524f8821a04910bc10b69a8eb1b723. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/ATAJ12500339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d8761cab1e39ccf58ab61a94b2c383cf27a3a7434de266e2f86f4d37ed9f46. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ATAJ12500340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104d559050e442a4c98a69db182c04ef2a5e602930a7207842cbf3efc97a7528. 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/HRA040641862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847a82c7a25c43e34e3cfe0956b66f3636c4cd5f07e2979196c9b70537caea9a. 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/HRA041370547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678f316b6eb82515eaa3867ec4f4a4fef6c7b722c867a4ff0d9aa97eba2131f5. 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/HRA047627337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87dac5f95ce38a1bce5ea9cd265f2ff3833371223cc2a71bc1aec83a4a59a039. 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/HRA040627344.