The Sketches () is a Sufi folk rock band from Jamshoro, Sindh, Pakistan, created by young musician Saif Samejo. "Sindhi melody is very charming; there is enormous flexibility of words" says Saif Samej
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 0x9408a3644c069241d94070c8b7d2d56a5bf425a4b9d0166051c7038ab8780ccc. 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/1de52983-919f-4b7f-a038-8e33403448a4.json and https://artists.proofprofile.net/proofs/artist/1de52983-919f-4b7f-a038-8e33403448a4.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 0x5d7f0c2ee5f45fb71a07699c89b2169224a1e56f219b09f87651339d366e3f5e. 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/QZK6P1961590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722a26788c2e129fc2c24e9d517f143c0f0477fc2b39a515c1fba46addfb5684. 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/QZK6P1961593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0849ecfc5b3fa6bbb031191eacb402ad6bfb77cb31bf052268d24107b26e5f. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:48:57Z), 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/QZES52158294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9516c77e9c17100069fd72f7904977d69b1abd44a30984dedbe0cdaf77cb7846. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/QZES52158295.
Cake (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e34d9bb7f428c67d1ac640c5504de70c5d1079257bfd41bcd9be4100be7a7ea. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZK6N1913668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6985b6b5a0ac79ac5d43e42b089215f31ec36601940af3610f05cf314a9aa3. 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/QZK6N1913669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160cc0db86edfe461a3c260478b7d9e8d5df46c50505ce82b15a4876a98cc63d. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZK6N1913675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648d228a8f920ce26b7a507161fe17d85158ff63c4810454949a2600133d9b38. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZHN72031135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99df91f7325609596bfcb8656f068666da6a288c8dea207fbd470aabcc460091. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZHN72034322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e506e026f931cf830fe73ff9b875289b4368666202c70fd8e56c199614850f. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZDA62131767.
Dastaan-e-Moomal Rano (Coke Studio Season 11)
Dastaan-e-Moomal Rano - Coke Studio Season 11
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c4c3d10f5fce58696b9a53f72dae539c8c64905298452db47b0cf31f9aefd7. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZN882126810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c4c3d10f5fce58696b9a53f72dae539c8c64905298452db47b0cf31f9aefd7. 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/QZN882126810.
Tracing the Indus (Pakistan Pavillion - Dubai Expo 2020)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d152af5d164547dc84bdecb4b110a00d9f5852b126f0689ce8a25b54ca02dd. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZTAY2233497.
Dukhan Joon Galhyoon - Live at Lahooti Studios, Jamshoro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda8ce47b71ea4bd6a6578cff7a5406a60dea619bc031cf01ed851c12b0cbab3. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:41:17Z), 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/QZTAY2298922.
Mitha Mehran Main Milbo (Live at Lahooti Coming Together, 2022)
Mitha Mehran Main Milbo - Live at Lahooti Coming Together, 2022
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab81deb13cf67a47ed674cc6de39ba3854639702563cd3c3a9836ae0440ac19. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:18:01Z), 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/QZFZ22322441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e192fa2001f8c83c0331efa808a5a57f7ba6a7fbdc939ef551d00ef7b474d30. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:49:26Z), 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/QZFZ22320723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8ff288ba189523bcfb2575fcc20d30edd3ada16b40e3a62838a77e45a47524. 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/QZDA82359288.
Nach Ve Naachu (Lahooti Melo 2023, Theme Song)
Sapna Sapna (Original Soundtrack from Ishq Murshid)
Coke Studio Season 11 (Sound of The Nation)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c4c3d10f5fce58696b9a53f72dae539c8c64905298452db47b0cf31f9aefd7. 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/QZN882126810.