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 0x74ff4a2df44322dd9b58011e9c63a205574142aaee4eac309ee78216c554db58. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6e214c0e-f9ac-44b7-8126-df852d12df2f.json and https://artists.proofprofile.net/proofs/artist/6e214c0e-f9ac-44b7-8126-df852d12df2f.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 0x1efea3a14ebe434170a56372e95b2444e3163c18eb3f917ff302f6ceb785daf2. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCACQ1698129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19476816c22759c8ee5015489a454fafbb7a41760719d0348ef5db57f5582ce. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:02:24Z), 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/TCACQ1698130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23fd458cf147e3fe1709fc6d27deaed9a62c96c619113f3ff570400dd497d5a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCACQ1698131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98b4ac4a6971bc805e4a10c18d22f37c956777dff0761b1c1362a288cc64d06. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:18:58Z), 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/TCACQ1698134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d1723e55e3c60362093d7201f6b960188936d09d1096b87a9004a17140e972. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:18:54Z), 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/TCACQ1698137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c981c7196e0b53fbcad72b38d2251487cba72d9f798bc65e597da137e88a5e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCACQ1698138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf003062a621d2a1277ad5c3d3a7709088909087c297b37181931ef557eb635e2. 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/TCACQ1698141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f93a6b536ca5ca4a83cafcbc321cd67b8437d13b9e8e66493886cbedd078bf. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:36:38Z), 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/TCACQ1698145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d72effa4ad134e8c8153cdc97a773d879f4130aae56dd6ba17ef19d93aa220. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/TCACQ1698146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c0f8ae2ab6d83a405a960973df86b6c4228b63367ee883b486088a96f4bb4a. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/TCACQ1698147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23a0de928ee1e70973367dd6134ef7af5dceab046bff3b099258234d09e6b33. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:32:57Z), 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/TCACQ1698156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17190b1c70667331d42618fba906faf6410702e7051ff879b5750ebb9989ac50. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCACQ1698159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978efa357e9e52b8eca2a7e627aa7f5df4b1932c0a9db1646a548543a4d3a28c. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:13:51Z), 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/TCACQ1698165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6f7cef8dcd25d8deec179f9a2157762b3542ba7f73804a2651592bd2c17205. 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/TCACQ1698167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef946f9609444c0df53d16af7186b2210966f0c1745e823a938dbe72f5e3e756. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZYFZ2334909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7895fc9b42f592a6a3cbd1e3b0ddb25b4f22973da69a1eda38a10e19f4b0a63. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:24:43Z), 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/QZYFZ2334913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27eddfb526bcfde62fca521d196c5123e6d1222c1b84b9fc2fe93dbe321dea2e. 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/QZYFZ2334914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36279146b0f9672d3c023536b64cbf9de8148744cf99bc9d96f060df956b78e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZYFZ2334916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d505d95d1803e632f00a4f11e98bb96abfe30e7b7db61fff7f6afc94154f4a. 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/SE6XY2300857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61dde4a99722bd66d0a574ee4175b7999f1b780ab464038c3ed083626d28022a. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:24:49Z), 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/TCAGY2382524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56712d0e8d3ef4f67ddb3b9418480fae8ce90022dee15b6c6920c68726bd31e5. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/TCACQ1698161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0d5d8ebef7425d904a8d16c7abf3c5a139c0ff0f53f3faa4f8ebeb5ffa188d. 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/USHM82494133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2986bdf19bfd02fd3953aff899022ff5ccbb239984895679d6c46e1751f0b51b. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:37:43Z), 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/QZYFZ2506667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628bcab6838015520c2b3b62c7d15f4a0accf6f333162a188898c48a835d8bbf. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZYFZ2506668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296d8c467605e89ce981826e1394e856343b08e370ab359320bc8f1cb6c3d590. 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/QZYFZ2506669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5a85386ef8e77f89d32ebae7480193d054638324543d823ee333635b7f69f4. 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/QZYFZ2506670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326fb298ac48dddff49ef3baffe1a251a1d4fa0b5871f99dfdb51af64a157444. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:11:03Z), 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/QZYFZ2506672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19eaa7357c53adec4e4883b4c00c85f91da921ae0d598e4ed7ff70c4156c540c. 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/QZYFZ2506673.