Samar Rad, known professionally as Mentrix, is an Iranian-born musician, songwriter and multidisciplinary artist, currently based in Berlin. Her music often fuses traditional Iranian instruments and v
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 0xc70644f12597d48a05f843f6554ff8ebb0f43a8f2f30de344c16d3116eadba27. Chain 2 (Bitcoin): anchored in block 953616 (2026-06-14T08:58:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1a8b53fb-e6d1-45c0-a0e8-dd58cdd860a8.json and https://artists.proofprofile.net/proofs/artist/1a8b53fb-e6d1-45c0-a0e8-dd58cdd860a8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Prince of Persia: The Lost Crown (Original Game Soundtrack)
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 0xe78fb5b1017607ecb1611a64dd8315d2f11162e632ddd9e05e9b3cf0b249df4c. 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/CA2BN2303665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd9e58ac0ac35d19c6fa7a873ae09f8522cbe7d59de615aa667d636d70a76c4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CA2BN2303666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada3ead1efe13899195c16ff1bcc1e0eff572fdfaea6dde2c44284e8683ccd28. 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/CA2BN2303667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878d1fc10df12841486160addbf133a587f8e8f609179aa2a5f657bfa798adb6. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/CA2BN2303668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e21cd45562495cc0dad5cce9edb43e524d8fa9574e8772d4e7b0368648020f. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/CA2BN2303669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8963a2907aac55b01703b80de6ac0db9097c31f91bc840dd64f415e089bbc347. 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/CA2BN2303670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3ba36597774943ae2b532bcd4fd71418560ad495b2f1a3db7e6749a57c2bad. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/CA2BN2303671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dfa5269ed3c49ffd09587df3db65e0bbd16f9be0975411ef68533c480cbf037. 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/CA2BN2303672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138284a6074a9a2597e8ae2d061a181b03601b4ae6d7f8136596394152519345. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CA2BN2303673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7f36e8000b0a5b7b82cc21ae0852fa8ee5b94e87f3e5ff05c8b9c2e4cf36c4. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/CA2BN2303674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558a65160eb0c8d155eb16015e58020f25359732d8016b3849e97e337c75a03f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CA2BN2303675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe161d317b7ae2ca237cbe842fa12c06b491234d81b86ca3ff7238cf54ead5f. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/CA2BN2303676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa322891460473818c795b5ad90f2bd5652b1254f97a01401a64f66877e890b84. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/CA2BN2303677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb522ad554bc6dcac3edbd86ffe1e4f10af6bf1aea6f5981dad480ec837ff60d3. 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/CA2BN2303678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50181bd5cff38f4949701f10b1156029ba43f6cde362d490cdd927c684a2eb11. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/CA2BN2303681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a94b76a936a7d2f993406a6e4c24019de79d3777580b2d187e4b4b4d2258a7f. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/CA2BN2303682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ce9b5d40a8412c0ec9e2bd7664fe0ef99ba0cabb3bfff127aa5e73b24a1a2d. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/CA2BN2303684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d3f6ed7e8230e4a67bf747a37029a93307748f81b896a5471c9a5913f96e40. 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/CA2BN2303685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa234a21664b164d499aa9189176d64d16956c5f12fe22f5aec21e31d22a8b62a. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/CA2BN2303687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb3182d2a99e35550a5f301852234363e739c2c5e36cab65f6424959be201a3. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/CA2BN2303688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc0ac02d71c4ffc7526c4d0147f33052e7ba555323249fdad8fbdcab5fe72b4. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/CA2BN2303689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517d9872460df44793a6648d4e96703eaabc1dcea569143bcde554d27c5fac09. 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/CA2BN2303690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc1a05e6be5252c3bf278e2530fc815c17e212559d0c2dd11a605a3ce953c11. 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/CA2BN2303693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70546279339a1a20d65b052fc936d3b58f9e64f3901118d6492cb69dfa7ad2d4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CA2BN2303704.
Prince of Persia: The Lost Crown - Mask of Darkness (Original Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b076d5ff16452b96ea3fcffdf0bc339ef5268b65c544b509b25e5f0356e7c7. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/CA2BN2403808.