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 0x429f2ca29148640aff21462df907dcbab352341c83c42fa847a401540a4fac26. 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/7a2907e4-23ab-479a-a594-7045eacabd7b.json and https://artists.proofprofile.net/proofs/artist/7a2907e4-23ab-479a-a594-7045eacabd7b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nasrullah Shaida Nida Azizi (Paiman Ashiqi)
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 0x7751dd24c3eb209d2f7b0d24318c61055753489258724582566480f943e180fa. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UKXN22485833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aeb9c37e218c7940e33df7f8c21dda9401ee5d12a8ec0619edb2dee61bca7a9. 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/GX3Q92493940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3066c02a8ed20a7e547a50120cd2a770dc56a6a6ea40f21d5d9d63b111016750. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/GBLFP2426781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637edd9a355e0264442dd75b1377ef651851c04e818cc79c1a3dae83b1edb283. 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/GBLFP2419243.
Ewaz Ali Honardost & Fatima Jawadi (Qashangam)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4ccb0bc6fe646c2410f8b817e00b3a2b7c57757004176a1bcf86370bb649e1. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBMA22345288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9865acbb6aa0a05ee1d38051199657c867b824667fdf987137e6cd9472f2dc3d. 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/GBMA22343435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30116e50cc9c2a12b2ff691df71d69717f3b7998d0c8b310c994085250fabe43. 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/GBMA22338483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a6ae0744d012b67b8ec55316fb9e912b8674e3ee87bad714a93bee358ee5b4. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBMA22323357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae8713efdea43f5c3b8c490646cb494115756f434242fb0d8fa91a9edcf2b9a. 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/GBMA22323356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f8b88c783a3f73641152ea6695f3319949723a1c24bfc703d769cb4190ab0d. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBMA22322400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a9e5a4fbb3315bcac40eefe0a9821d1d8d5f679f2c08701ef9ba4e11499a59. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBMA22322401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de5c0fa658f603f6902490103b05ebccccb473f65f2f26c024b35fd98e2614f. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/GBMA22320278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x592fa5e87025ad05c2133ab8c4e6d4f9f6ddd1af94a89628f8350fbf24c78fe4. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBMA22320773.
Aref Yawari (Sakina Mast Man Masti Sakina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575a38f668a0e9eb95560e340ae18e545f7d3fbec837b54cb62885459f0b0cb0. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBMA22320279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82f39e83a383f5fba7d23e1139af8634591a9d06ff1a69ed237038b4f2c74c6. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/GBMA22320200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377a145bf0e533c1d441bf9c11cb9b0a9e3ce4720578f959ceb404b76a8af316. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBMA22317991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82769e2f72c77c54492bf210d117b72b727525b345300df8e48a34d234256844. 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/GBMA22317990.
Nasrullah Shaida (National Song of Hazaristan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e01e694aa7db6996084778f0635261c432fa35654bfec762a8a7bed15940b9. 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/GBMA22316483.
Mohammad Taqi Hazara (Shadukht Malistan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00258973368c50b9f0b873c4d6772f38f2e8d82d6324c9deffb5dd7088d839cb. 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/GBMA22315470.