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 0x0ba8e7951ce164c47005b0a6b1e00af0a7ad5c0df54a52b80b1a2fdaccd63440. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7a04bf27-6bf6-4b85-9dc9-5169861b5024.json and https://artists.proofprofile.net/proofs/artist/7a04bf27-6bf6-4b85-9dc9-5169861b5024.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 0xd92b394079f11455d975e2edc0e13222a27dfb7596ba055929c8efbc95495eb6. 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/QZFZ22539728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86da61e794d983a80f1a0c331adf847894def80c7e7d81386ac51e8ed260a64b. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QZFZ22537491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2110f2a3bbc97c4cd45b40d6e1deca49e718c89b8700c0ca0af15d2fa916ccd. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:09:15Z), 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/QZFZ22539723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e35d8169fc17f275c0fefe76c2138c6c275615ef96e194863e0779b276f051. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:18:02Z), 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/QZFZ22539725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ef7c37e4ec46aa37eb19f8856eb99cf9855da5a3574829038e226928d66b7c. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:53:14Z), 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/QZFZ32524705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18fe7cdc3a754edfb7e3560f23aea26fa78897e1bbf57ed2e5f632e6522853c1. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:22:07Z), 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/QZFZ32524702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c0e0b4057010b43008ca641eb8ab6d4b710cdce159631d1d29832a237798fd. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:39:44Z), 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/QZFZ32522686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd97bb377b202ed87e4865806a7b5e86d92bc645b2ae8047b3035763b2abd4f0. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:48:02Z), 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/QZFZ32524701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53a47168eb1823fab3c9775a48ed172d8f765a0fa64ed8dac9a79d2cc2281f3. 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/QZFZ32522707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5bb2f154ed9d0f3b560439280e4c5836fa0442037c521e34b7cff6b68bb6d37. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZFZ42528295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7cd6c47aa4838984dfac7a8ac9f4f47c3865eab649122d608984365253c6c0. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:36:26Z), 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/QZFZ42546045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45b1bbe5c8e1ecc212911baaad944139fef4b1136488a4bb487d4adb81005e0. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QZFZ42528293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b5014c56ab1d280f24a4c54b5b9959cf9291095d0ce77ea1f61339443fbade. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T08:00:35Z), 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/QZFZ42548366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2445c1f19832922f4e040538ba41f605e71e191a82b2cac2755919243cf7965d. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:08:18Z), 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/QZFZ42528285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e1a3026b3f68973a89c1a3fc6b64093b9a1d1a4762c7adce710376a5d819aa. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZFZ62541004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac34b1d6fd9438abfbb08ddceed6c03d2a7f2ee6fe3536c754cb9d7262708fc. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T04:59:52Z), 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/QZFZ62542891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344a19077201016113fb7be8f375a3798502c77a2f3c8cfd71da9ee07c5986b2. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZFZ62539294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b4f4e702f2bb7de0a3102989e0828d86866b8ee955944e1106c720e4396c27. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZFZ62541003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc000bf36ca8ef24afe8d2e4dd461ea684d00f71efc227d71af3793684f7eeb00. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZFZ72501027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1eae407e4c25fe8b7e0831ef3da85c5ccd436ded0e9815f323c2f13d20088d8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZFZ72504415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a00687dd4d312139cd146d17b97a119adee6e1d1d35e3b571c7547339e86ff7. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:14:05Z), 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/QZFZ72501024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231d39f5c0ab7152ee1813308b59a3f350e563d71dba08b94eaa0342daf66bb1. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:03:17Z), 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/QZFZ62599151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc000bf36ca8ef24afe8d2e4dd461ea684d00f71efc227d71af3793684f7eeb00. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZFZ72501027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a217b0dc3ff66fff8ed92990b72ee257efb6e9873d76f2a876a45015158931. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZFZ72566716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112374949ca6a4fcada90feadc6393663265dd3f3194e4afebd8fc62073c3b1c. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:06:54Z), 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/QZFZ72570762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360dbefe92e48b0cf7191472f6ce13891a76e710c40ef6f307f0e67d33ff991c. 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/QZFZ72569396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a35445e2e52ea8b86eebc3f2b957a2dcd7f0a47bd43cbfe968b1dcbf34f0db. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:41:14Z), 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/QZFZ72569398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706984b0165a89489207f0fece0dea59f81022524de3fade26a5fafbec5d7f60. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QZFZ72569400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35adc812f89772d06f62ee0beabb058ca32512bf0a4f983c4fc46bae42d3c35b. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:05:10Z), 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/QZDA42545851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c693aa3771da23fbcc2d4cac686eb51f1f8b4649824682b0a5e73888340220c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:44:15Z), 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/QZDA42546914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc575797df66ab1a7ac4b0f0e6b251ff112e05d24897b4a267d6e203e00414ad9. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:37:31Z), 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/QZDA42545859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1194c9e727bfd2865f1e4f1edd4c5af85713043cdce11edd63421d8f6238e0c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZDA42546913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53afec15bd88874f285a32b277813e6c5d1e790d88ef6ee216ccd028ff706215. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:11:26Z), 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/QZDA72529650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9f334632d58d88c878472a05df702fce60c373484b71482cb1f3dc34587d33. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZDA72535702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7bb592b26fabd74b9cc48f56c9784df78354c4069df5c0f66b767f927c26d2d. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:04:48Z), 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/QZDA72533974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f605abb1fe856a2b10ebcaa5683493d42de10bc0a525b1436b0c5a9d6e30cd. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZDA72531990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714f21c09bfe2ed71103b3d517ae0d339dee74d58cab9873ad70813b26a31d43. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZDA82553369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62664e8a689853030eb60687c804eec2459a7100f546402185742e23ae0d735c. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:57:50Z), 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/QZDA82553393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4630c8cef21d105e5dfc4414379c5eb682aa24c40d8888b2090afc7aa6f65b. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:54:19Z), 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/QZDA82551207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de2ec7b425cf215fd4da512d44af02bbd389c2d68cb4d67c80b8e612b468fb9. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:27:05Z), 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/QZDA82553361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5f2270f11f3664cc8f56efc991bb34dffd6b514b06a435b1206aef544965ad. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:11:00Z), 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/QZDA82553378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794fbfa3d2a80b7fcdadc6b5fe0a2dece350e4573c8f2d6534fcfa2af3e30e5e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZES52567867.