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 0x3b739271e65cdcaf3ae0761a1eb2e2eea969808b1f8699b8759b65337e5e32a4. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/edf8539d-edce-4c00-babe-bf30e15051cf.json and https://artists.proofprofile.net/proofs/artist/edf8539d-edce-4c00-babe-bf30e15051cf.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 0xc4b61e9842aba18bbeccd42164535b7a17829531695a615abb51f75bd3e65b57. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/UKXN22460355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0384e362bf93a02bb2b378ac0039c735fc922b323dab63b50e67d9dd326551c. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/UKXN22460352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6866a52b10670202d582f183a56e776dd129a29775b83930dfb6a2a01aa0cfb. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/UKXN22478052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7fb63fbc98f350e001bcb21c17833981254b05ac8bd80f66e542a9664f2e16. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/UKXN22478057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a8d609e407ebc0f95f7a6741c773ea67effbe4d4f798470529f067b7b26e18. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/AUMEV2472559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9cc5d337c7ca776f8bac2981943dc51444cc73adfb8da0a1375626c2af6843c. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/UKXN22478050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea34c180b9920e09a433b770bbf6b8f774674034f7caf6716639b10ad162ae9. 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/GX53U2378060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb498c68e20d2490e6016df81c5aaeddbc4690c8e50d9697abee66a95786c1ddb. 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/GX53U2377774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff752e63dd012df3df57d0401d149b900d21d1445fe302e06f1cbedc6d286370. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GX53U2377778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd535571bdb2058d0ecd823f7ef69897ade8404a5caf9bb7c01119e0596e9f94. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/GX53U2440037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e71b3ef3fc12570a886193d4d52ba2050e2342d0cb6346d2f53977fccb69a4. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GX53U2440040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2afc2ac026bf424aa60b8f7aac90f6c39ce121a266c00fe081ea7f05c1e6e272. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:17:14Z), 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/GX53U2440050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96eeee1282fe8e1c91b183ff0d827cfdbdb873ca81d8ac80d1f79bc3b65fdbf. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:09:47Z), 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/GX53U2440053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2d4ec6005705a84f3a93e23130ea5a43008b2055ae48a0b18920ecbef83575. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/GXF9Q2408778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b39493960faa4fca15bc85dc8aaf5b56d384cfc1e5e06c5bcaeb8294ab4b1c0. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GXF9Q2408804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758640f7ea7888f23eced5f13dfb0c06252bd4cb117266c218b50142f08e7603. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/GXF9Q2408768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb946f9a5c8c63d3fb91616477ba46b7e5ca5c28b6201c233c17ff4cc163885a. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T10:02:48Z), 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/GXF9Q2529779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5509e22a7ae4e7d6806b37d15753174026fd313c369eb0e4b1cf52b6d7085ea0. 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/GXF9Q2529790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f544cf114f81152deeccb7d40dc8b0698db84f7891495c0d535e8f9ae6f610e. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/GXF9Q2529791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71763fd8408284d54c9498df454777fd5c82b955db4e7899febdb4d73cb6c9a1. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GXF9Q2529792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1048668a88f87963488e1b7a07b59eb058f319a733eb81a1d27a3d24359380. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/GXF9Q2596130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0410acd14c7ff3e8cd6d1a1e0f60b6e3c9e99ddd6ffb46a13e204735d384177b. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/GXF9Q2596131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66da469a904bb1928f6977d64bb60ed84bef56d003cc807eb623d6390f38da43. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T08:01:55Z), 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/GXF9Q2596132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466bbdf1befaf6052ef503f9fd6bcaaf9f48e03b0c3ef5aa5d98bcae681422e0. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/GXF9Q2596134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2831049cf6444e19eae3adc84df0f01f71c19e9f480659b669143761f91e66. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/GXF9Q2596138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c026c6d9fb9f2300dd20e81fc6d112ef4f8cc57a0cb93d33cf3c92b32b2bfd. 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/GXHAF2516859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2195be1afd7ff663d8c9380551964f48c64e144ebeee031290d5809d232f1655. 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/GXHAF2516860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49e49a4653e191a804550b380f3dd4ecf37ee822f7a17e4eeb4a72d4cd3c767. 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/GXHAF2516861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd219b017c6047f3336ffa878969932130905108758ea6007eccc163354eff52. 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/GXHAF2516862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d7fd4cff35ecdc10d9857eac91430dd69ecdf7de1edf0f273201614402a253. 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/GXHAF2516863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df2bfa744a69e24c39d6e5ec9d6c84e399ead565fe4f32421bf7e9add15b7bf. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GXHAF2516864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58de540d5a01af1a6e9f33cd928068ce60f564973b46ba2c35acac27f1ad88ad. 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/GXHAF2516865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d7ca75e3e4003ad3efc69fbcff29943926f1154d48e3da17fe862017a5a82b. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:54:02Z), 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/GXHAF2516866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd15ef71341ecc6c7c92885dcd7244067a0a6fc400ead7286e0e87cacd769b25. 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/GXHAF2516867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57599d2874b76df1468320299be84b4e948cdab6504e17c3cc82fc33d3b86fc6. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GXHAF2516868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f056fa0a52a421af9d84c474e5df92f300cdc5d6fea3e875fc53538c3d341ee. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:52:00Z), 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/GXHAF2516869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3115955febed07601170fde6278c4b21979730ea695c3724f8d9ab1935ad64f4. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GXHAF2516870.