Amjad Farid Sabri (23 December 1976 – 22 June 2016) was a Pakistani qawwali singer and a proponent of the Sufi Muslim tradition. The son of Ghulam Farid Sabri and a nephew of Maqbool Ahmed Sabri, both
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 0xead32f96cc7b3957352f6488d4cc3bfbd7015df017d228b188fefb542a1add4c. 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/343b332f-f34e-4261-bfd1-15e224478f42.json and https://artists.proofprofile.net/proofs/artist/343b332f-f34e-4261-bfd1-15e224478f42.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 0x85c0cf4a166bbb8029479c9779071ac0c18fca2171c83ec0855ba297a16cc7fe. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FR2X41931562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86fbe8b49861cb14da40233eac24de1ec6890bfee95fa88ba948db4e663271f4. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FR2X41931563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x209951a64b7bdc0896b0567559d37e2c89669464f39b5d8a0f0bc626341d06df. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FR2X41931564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ecb8b24ee5c0fcfa7919e299563b5f9a32a3767ef97cb785ecd18c411c3ec53. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/GBUQQ0489401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4182cc83b2d1c329681f3978d6f5a8e06eb25568f6d36133d90ec4b472099313. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:04:55Z), 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/CA5KR2129818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4aa029a6fa017f2e3ff8efa0e2f20449f6f3458881c00868fabb8f57cdcf559. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/CA5KR2129821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38526f03ad2186195ad42e988f38c039be6f2fff495040787a1fef752c045719. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBKRT1276102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b7e761ab6e83d260de5633b4e85fc0ba4c277e94fb466ac18a3b4da9b185f7. 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/GBKRT1276103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3fbb484003325ae302550e868b220670251c2ad090cd63574d5488c74897ee. 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/GBUQQ1298002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe7b9c63e7e36d28dc3b20c4af11dcb80e277133bc94f6f1190ce8357220fc2. 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/GBUQQ1298003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08f074bfa50e3eacfb658ea6d4055fc2c966e6f93937385737c64fb6ba1891d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBUQQ1298004.
Tauba Qabool Ho Meri Vol. 2 - Islamic Qawwalies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b929f54d5688165d44498f80b91c6109c633396a476453f20ed18c736c57827. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/GBUQQ1362904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ecb838291325730631deaa75e0e88f0adaf05925cd6f32e6dc28863b6e62e1. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QMBZ91966554.
Bhar Do Jholi, Vol. 4 - Islamic Qawwalies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99003ca5fccc08e045f4542fdc49018e58c2fc64adeab53c031682013132c7dc. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GBUQQ1492001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb625ce79c7d25d555a605e4172b700bf6d7afe83f4fe89ab08695fc236026139. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GBUQQ1492005.
Ali Ke Sath Zohra Ki Shadi Hai, Vol. 5 - Islamic Qawwalies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d5b51750117485c765b99e9b14cce79d1091ab2bcd2112442322df469d73ff. 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/GBUQQ1492603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c47385ee89c6e92bae948a0ae9779428a994f99c03af1a2190255037ed2c455. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBUQQ1492605.
Kash Yeh Dua Meri Mujzey Mein Dhal Jaye, Vol. 6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce95bf0cc1fd04aef485579568d77b2755c91c241b1382bb9dffa2d1c699414. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:43:31Z), 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/GBUQQ1565601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa2d20504ef28bad79414215ac3fab508fb201fc6747d41469ef2e1172ffdfc8. 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/GBUQQ1565602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e0d53867559d80627b0064e6998cbf1f81529097f7b4f558e98212c2491db7. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:02:53Z), 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/GBUQQ1565603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef17d681a2e44c9625578bb688742a716e37f47547411fc280d331a737ed0151. 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/GBUQQ1565604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82928836a184317f8aa6e695f738cd31b050230efaa34259e184c0bd646e43d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBUQQ1565605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a780cae97946bbff91849121f169433d8349d9553e525bb4b6f49ab85ea3549. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:26:43Z), 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/GBUQQ1298005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b929f54d5688165d44498f80b91c6109c633396a476453f20ed18c736c57827. 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/GBUQQ1362904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5bd9defd1e5099361a1ccc6ec4a61b8d5a5243b16e94b499d3b895931582a4. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QM4TW2059050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071abcf454eda6e2e7a057d03a889bf562bd718b6dd208d60ce131f712171ae7. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QM6MZ2148151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7077667495c041804ec6fe6f4b11be20590618420248a3568d9b077685b8546. 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/QZN882378887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf822192fe66a015cc6707b847eadab4c7e93e04e343eb91fbe24ab76b968fbef. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:54:28Z), 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/INS922300961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e41471691d44077f6e7ae966a16c7278f0f8da38ad4351ac445907838f97ce7. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZWDW2546582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e9e3496f8e0fe65938e2bfaa936d7debc7ca697487daa15824af97bdbd0e82. 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/QZWDW2546584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6295d6bf941364302486f04522ce8e9b4ed2126a84dc7340b7b8ffe712ce5e0. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZWDW2546585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09be217b9c8e03278997f5e4216f2b3d70c890dd29a69fdb0e247eee664c5538. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DGA062509443.