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 0xbda945566d940e9286ce6c21065718d1b7fb8e28b07c02756252e593b0311a94. 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/33f20bb4-6632-40f1-b705-e4b58c7c5b28.json and https://artists.proofprofile.net/proofs/artist/33f20bb4-6632-40f1-b705-e4b58c7c5b28.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 0xc2afea4e7c9312092850ab5ee7211e3b21cadd465d121e3da3b032818dd1ac82. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:51:40Z), 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/TCAJB2420198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70abf11db6e58cf394f004bb11a4328fff84fbf14d7f7091960eb12d363c7e9a. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/TCAJB2420239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe08b57788d2bcab28b5464bf23a17dd4f37d1dd91d692db0a139913cc1448f. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:42:32Z), 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/TCAJB2420311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867d75594d4a1e0dd6f0f6338a6270a4e13c21aa077b02269b3e9b76712e43b8. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:04:14Z), 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/TCAJB2445400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0006341570157a16c91bd95761dad0b8f57d276d1969caede6ccad229d71e481. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:32:45Z), 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/TCAJB2445378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e76b6f4830bafd7787c9bdde78439fce63263ec803c37c7fa2b6553dbef6217. 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/TCAJB2445326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487fd414fcfe0a63ff126cd8f2070b968aba88b233aae353c02624a094e4c47c. 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/TCAJB2445351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964cc59565a27491ef8b7d5091cadb9bbfe06d6c197947532450520105a4b7d4. 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/TCAJB2496583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef9b63aef632c831d0193e0c2a4358b8f6ff00801e7d059ac1a63d33daecac2. 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/TCAJB2496631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f1bbe49ac348a6c151afbfa41d85118732f4eb60b0b49130f46eabfba06aa5. 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/TCAJB2496572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495de026891b56bd322d7bb1811631ea25425045b855d7dec8f4ebb629cd06c5. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/TCAJC2443977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606b20e84658646600d5e6fa3d73067928181e868e8afee147df2692456c2b42. 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/TCAJD2443823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5fbcf316ffe2c7188c7a1f35793ce5c225371efb5ff2acaac335b3d63952580. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/TCAJD2443868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa34f87081f397bf4045851546c5e2530970739d00640f84e161e4ee665075a9. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:53:17Z), 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/TCAJC2471643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce02f21b038200d212ccf03e976aaf1b58672c5dccb5e20e4bfdad1731e2879. 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/TCAJC2471536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe20ef1802fb867086d89ea5434799380a0f2ea9fdf57fdaa916a61b473b28c0. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/TCAJC2471486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75af212e4ff850dea16d1cecf4e638edbd6f97a5f3584b01beb574bc3dcf51fe. 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/TCAJC2471571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f8911ce3401e0a73e8763deb0e213c4cc1d07a848a92a5731c4891ac105ab66. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:29:47Z), 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/TCAJC2471505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c75f9473eabe70db41cb8bf89894d34861205d5e7172ece5a9f2e8e5b7b2edd. 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/TCAJD2471626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb51f62d18047b9a30d664f446ff63e5b5b9f2f8f2db88ab70f93099c3f7e1e8. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:42:27Z), 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/TCAJC2497423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa584c5e5223aff2101e31d638823ba35243c7110063fb83a3ec58ac9c4cd8801. 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/TCAJC2497445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4521dcf7d829234366106af44354a3c08b3472db1c83f934afe61867d879d7e0. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:01:33Z), 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/TCAJC2497307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb514e96f48ff737af444adb65e7d78871b794fdd90c7c4471831fc6d0c7053e2. 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/TCAJD2497390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4caf176d336f10b77d35f3abde9c6fb13bc3e7832d7ba0ce983aff25d42c3c. 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/TCAJC2497339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83fe9e4c9a61bb55da7fe7accb072a4eec91d11da490d6aa2108def08dc5398d. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/TCAJC2497350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bff052eb82521205bde8b23d9fa152b488f4d8c2cac6f2aaee9dc8fc9455c8f. 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/TCAJD2431528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1b8e644b9392b01f984840561ac8a3c206b2a454fb5f0852a20a36ca3eca0a. 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/TCAJF2556213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78bee36971a0b736aba982ade9abd147166e9ca75fbb812dee6ff852139d8413. 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/TCAJE2556246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc9e03afc88f4873bed6e47b9ca53058877070d34ee6abfd18edc033d1f7927. 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/TCAJE2556022.