Indexi were a Bosnian and former Yugoslav rock band popular in Yugoslavia. It formed in 1962 in Sarajevo, Bosnia and Herzegovina, and disbanded in 2001 when singer Davorin Popović died. Some of their
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 0x3efe7c9de5cd8148e00b8b11694c425a77256189efe2935271a5650cc5bdc48b. 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/1ac4ae8d-431b-4052-8a88-03c041348cd2.json and https://artists.proofprofile.net/proofs/artist/1ac4ae8d-431b-4052-8a88-03c041348cd2.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 0x291b35f664159c5ce64f9d034f7d7dd0715312d86ca73e5ed515aeaa3a350be1. Chain 2 (Bitcoin): anchored in block 957625 (2026-07-11T23:15:09Z), 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/SIC030900118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e34b5bcb3e5717c151d58f6ea265944a985841fe4d623899f7d2790f7f28a4. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/HRA047108817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9bacc50b72fd6310d59eb7c0af202a133b01f012c0c7a61c379d0713986dabc. 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/HRA040546983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a34f7484e131c490dbbc3b2cbf6d17530b43347250d869e5ea51f1dd7520906. 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/HRA047308820.
The Best Of Indexi 1 (Najvece Pop Rock Legende)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7e48783056f396eb69f2f6834ca08a7822d3a7e900770ff8243bfcc7723f0a. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/HRA040612140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c3b1adf358732f4032f19b47204443fc9a6680f839ca6d234107f6ad265e56. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/TCABJ1246518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f1e9aed99eeec1e326d38d4dd27755c5a8e9fb0ba60b5c03013be174562386. 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/HRA040960156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a3ae19f1b46d31c24079161467c233b7746b04a0855f5b7258cef28494c489. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/HRA048352179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0d48d6648fff42163ae877598e0641244b366680a4e0a1ac961a38f683267d. Chain 2 (Bitcoin): anchored in block 957616 (2026-07-11T21:52:36Z), 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/HRA047730963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f1e9aed99eeec1e326d38d4dd27755c5a8e9fb0ba60b5c03013be174562386. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:28:15Z), 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/HRA040960156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a3ae19f1b46d31c24079161467c233b7746b04a0855f5b7258cef28494c489. 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/HRA048352179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb01fa6e4f37373532b50fe8d5bc852ef062195b460cc8cfc880c9104d465bb. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/HRA047412138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7658ae49a682f1096e1e2d943474ec48ceb89a1644b5e6bd15f8403971cb7060. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:45:14Z), 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/HRA047412141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd4062f78c6c0dc94c632a05820ea998936e2df2b930f8b2985e380d1d01280. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/HRA047412144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e34b5bcb3e5717c151d58f6ea265944a985841fe4d623899f7d2790f7f28a4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HRA047108817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059dad87af2368b6fe2b282b12e5172e17701affbcd3f09e72b81dab1068bad4. 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/HRA040960155.
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