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 0x2207b817d672d51d766745927ddfed7e93599e4cc2fb682f87e4e89ed487dbda. 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/7d33594f-9af2-4525-8241-8bdbcdb60d66.json and https://artists.proofprofile.net/proofs/artist/7d33594f-9af2-4525-8241-8bdbcdb60d66.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 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 0x089274a765057ac4033e46ebe4e9ceb6d52219ebb71909a80fbc4ff9775ed876. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/QZHNC2017782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5255a15d97f82c11d421d3bbb520503c395ab1a3e87252b8d8cd81d28a5fbd99. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZFZ22116211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9228e433621d7ac6407767cfa7d4235b178fc7ad17676e657254f8d023cf4ac. 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/QZRP42171859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7814021d4e278810525eba069ceea568c8a95040d77c2aeefa6ce184e6b42054. 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/QZHN42212820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4518a4b34936bb2535359ac4224b8cf08e470c636f0338431dc3703e70560f99. 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/QZES82435332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d6c0434fb2f316cd6aaedeee168ee17c7d8beb1c5071ee3513fa7443a34900. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZES82435333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1346275c0a454650983aff0656a348c864af5f864c0b2f3c37f97d5ec7c3be. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZHN62392939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c24e8807330053bd5dbdba978782043ba73514cbcb681e5175c7c4daa60f361. 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/QZK6H2316717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474ae4246ce243c9f654eb52aca2bc81d755b7e2fe9a0c2724e92875a3fd59f0. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/QZMEM2364304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1195763a4407a49b8f2ce37bb55bc8dfe2774545c3d1bd462999cfdb67e61999. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZTB42394609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774b20f5d7cf88e1078e059b17838146b02a61d88953643d6daa7df75ce23ad5. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCAHS2346908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3cb4e253238e08ababcaa69dd6fc939ca0e94172d2eb5654b4b9b1fb86b448d. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/TCAHS2347055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14bce754be24959a5d6be0916440f738a74cedb28297c5d7feebaa4aca99a304. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/TCAHS2347130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da661c47c58869e529cc6567fe92f523d7fe6c30efe7f040b306cf636784915. 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/TCAHS2347144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0ae6be7d232c04c69339f7c0e9445a1fa8b55be1544f236b03bcfea5ec23a9. 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/TCAHT2455043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95eb60069d11ba81cab46b0fefbc44f6edf40f5b909a8147ee1dbc02c0c5d1e7. 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/QZFZ32445787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b577fa255ac7517648d6c3311bafca27eab1f0b2e8afb2978cbd61e7b22ac8e. 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/QZDA62437214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ecab700e207c947afead73d9daf0d1b0622d8aaa383d28cffbc9f985039c8e9. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZHN62496585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd66d565e26754c3477eb403a925c208802c6f9bbab8805225ae73ca7816e0c. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZMEQ2467743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a84f2d0e7c63d6633d80ca2755c6bedb0c4c50764aae73359f89e5a44973ca. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZNWT2410366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9fa5c5ebd340e9cd882b3e00b279a95f1f7c1cd2f96d40851b3ab5e25ed8e2a. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCAIM2429789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4dc87cd5bab141c65db4326a264c2c62b19d7f08c8bc6cb2f8fc65388e02666. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/QZTAX2407560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c93225321ee812ab06dcf89df1bb6c9228e560e1ce7ec4c830cb7dd70d7285b. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/QZWFG2421758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c65a6e7b4d33dc0d49387889aa37407fe726b1376f7fd740937917df25a60c. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZWFK2462045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48ed5214b16b6341f3a1d2bbd8311f39da30f7855dce98a25a58c8cf72bee97. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZWFP2409462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75624c32d8961cff29496c6f82935686e097a0958e3b074b6d8663d24ddde9d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZES92540673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7006fbd6adbb3988a8d8c10f61476502e392b3b04e955356a50aefa8f1f7b868. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZHN52558701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90211deb65e4a58b19eca7cb0dcedba22137b505da13c1d85813ee697d83a1d. 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/QZNWZ2536071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4bb5bd4621913e4c67c82cd298a8e2f2e22849489aea76dcee012908e29059. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QZZ7U2564746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d9b70d9e3cdf6b492225c3f4bcab2644b03815a9dc6f5c85beb2425a181290. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QT3F82558245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01cda370255b7b28ca3e1afe61120b4923c66e4308c9bc88da642b7c51b1ac0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US23A1554360.
021kid x Fumez The Engineer - Plugged In
021Kid x Fumez The Engineer - Plugged In
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a334ecd3463f9552b8d31a257f1877ce4928eb1d68afc301e27ff606083b794. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US23A1552283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c2cc13fa67cf8dab8ca4bf99ab7c58b2a18babcd501105ebe10db17efeeaab. 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/USZXT2453489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd634c07266506b37656f83d4d037f646e08ee9495f4624054a04296b302cd508. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHN92314202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf56c9e61d3b2b4aa83511761c15226954f1600539dc5b2dc62c593b2a6674b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GX8LE2242862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3847be3e96869b3b74fe4a6665222dd8937220222e9be536884f67f38b003b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CA5KR2512039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e17445a8c25d30529b4a0e27c91ddd5393b1006227f0e3a6676620603ac3e3. 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/SE62M2357671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60bf6942d050555c099cbd1b3e1447ed4ce6f937b3693caa7a24f39cedbc3b4. 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/DEPI82215118.