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 0x33441d45874d5fcb2840bc48ef43d0132feb64cf07161260b3a051f2d58c90cb. 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/b81ceb1e-de8b-48cd-921d-fb3c722377bf.json and https://artists.proofprofile.net/proofs/artist/b81ceb1e-de8b-48cd-921d-fb3c722377bf.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 0x529e5443a33d1121ed5adf232dcae03a68400579cd4b12eca70ad4d878492dcb. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:28:14Z), 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/QZNJY2172010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf661aa511f64cec951c4b5a751b6956340bce003540bd976e65f44a8ef9fcd9f. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/QZNJY2172011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3149fd42af8f12b52817201d03e6e05cf9458b7515be7953d4633b67a6b5d528. 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/QZNJY2172097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b4ebf96c1cb516d28b8b2b0c4a1339205e07b344c625086cb9116406c70366. 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/QZNJY2172013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658d1f72a67b1fe17d885637b4f4ccd93eafb43bdf9b1a2c82d2b41e507547df. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/QZNJY2172017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb10164fbcb0763675b80c0cb0bf09a4477338a7b46c8a40bdda853dbc509c4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZNJY2172022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b2a8d24145a89de52381d016e53ff8637c3359af82a137939e025688072c9e. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZNJY2172026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c655113edd0462da4467ad77b9b69006a51d8e4ca48e8f93136c368eec88322. 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/QZNJY2172029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b94c74b552e54580b470589f96e5b2bade56d341c9defadfc45555f6202820. 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/QZNJY2172037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05a6ee57138bf2986e6387c804335ba9e3396906941e105178279457e9d4f1c. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZNJY2172081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e36a62422f622a653f80a680545886a4258e51839bb3f42306e212dc9ce8554. 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/QZNJY2172086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4616a4340c36f67b57c4a5c8853cf0de47acf23c9f1813181f2cc9ec36ab308e. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZGLM2272170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90aa78cb851331412522aca8a68a2649e1a0c3da694f5c44f7ab36080ba594ce. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZGLM2272171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934354486a69ef38261c524ba23acff51723dd3430382d65577fccc5888b235b. 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/QZGLM2272172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa06bd91710970a062c80a38e25e5aa8827b7d47cc64a0a5996f680126022b37. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZGLM2272174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2375552767d78283050abf7f813ea82a65ffc847ef97a57b863c49ea9b69ec7. 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/QZGLM2272177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f567f92f024badffffa9901c549315506a3421ec4de48dd1c31cafb217dc11e. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:35:22Z), 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/QZGLM2272189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773d44604df1830025be07245d89ecf2b262976a57644e48d694ccd108136b4b. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:30:14Z), 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/QZGLM2272178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997249f8ad6ebc91f8a19f720a590896e1e5aa2533b22f02dde3768b78618be1. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:24:35Z), 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/QZGLM2272179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed581cf40ac6cfc99444b7cbdc6c72b2ab5ae7921e2c58cb2cdd0a7b90709e3. 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/QZGLM2272180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc635e93c18183c1d35c8927c1a193709b3bc7f627a9a6cc9476ec0ddf0a40f9. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/QZGLM2272183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd307034568aadd1e113b79ce2593917da4bc9b2a22d45aec45760e7ab5e0afe2. 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/QZGLM2272184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa338e670c62356083cf681cfaca4e782904cc958946bc9ea0324b69d050b92b7. 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/QZGLM2272192.