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 0xe732957836ec3e275f89eedb2259210a4e92a277516d8c1bf091f37581905d38. 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/dd1f0de8-4337-49c1-ad6d-71e040d03121.json and https://artists.proofprofile.net/proofs/artist/dd1f0de8-4337-49c1-ad6d-71e040d03121.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 0xe4ff9bffef83f4f101c128499bec2d4260239b8a906afb44ffea71276dd770f0. 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/QZEKE1891165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75fb7501fce969f7bb4f5588fc65e7d7a66cd74978c1c260af7ad825e6ad67fe. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/QZEKE1891435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4331bc6323e363cc29d9d8049aa16f23a03f8050da115fe2a72f5eea5a4330. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:31:42Z), 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/QZEKE1891549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb585765175928cb52bf7caa7ebcac333b62333e50a553450c9e3ffe836c1b7bd. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T22:48:07Z), 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/QZEKE1891774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b566db9651bc859b9da2c09714b3824443e2bd67accf372acfebbd1eddc480. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZEKE1891775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e8ca834d82905ff76600aa9f8a5ea5c870628bde958f9cda992a6601928ab1. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:51:41Z), 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/QZEKE1891776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6663be9bbdae0c21d0780545af9e5e1e2d86a9241f293b8a9dfdcbba94344a6. 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/KRA341782082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99031e381c4b75589cef43833ccc330530d20bbf93f03c39f64ae2aa98c715ce. 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/KRA341783132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d2cb6d64a2744b12204e55d10cf7bfb316842e983e5138fab952686f63119b. 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/KRA341783133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5f61f337afbee53ae44ee0f2d14aa9b49f799dba035466d1c4bc2dc589e91d. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:26:01Z), 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/KRA341785650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x592ff25107bc8bb445d1f43e094f65cb5905c113ee536640a596b6e189903bbc. 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/KRA341786077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e15cb5457d371650122d43a3c06d6d10194ce4a585de317a407331ffeb47cce. 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/KRA341787071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee04d17b82e937df261daa50b386824b3ba04e1641a09c731eaf1d91cd0ee34. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:18:47Z), 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/KRA341788441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50173c13b9e1e4b4ca0a4430d5de7f05ad2d34acc51671a984cc5bbb65c142ad. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/KRA341788443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac20df331f3fb96704992c45ba541251fb1cefb840b9be3aa4fb493cbd2b8f4. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:06:42Z), 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/KRA341788444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2112171983884664c04e0342a25ea610f8525fca9817d162b25c5949fb87a8b1. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:21:05Z), 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/QZEKE1893613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e470def43799993312d9fe19e4d809f21911485509f5e89e6bf440b3295ae1. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:38:38Z), 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/KRZ291820572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d96212eccf1ec23d015747e1a86ef587ea323f102562bb01f3bf3f037a61f2b. 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/KRZ291821139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4842c249016423d532319117e33e882919f05ec1b66d1978daec637e569ce1c. 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/KRZ291826044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1418d216225c30cb9c18ca591264b0afba23f705008cdc6a009be1aca3a6267c. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T16:52:36Z), 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/KRZ292068426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b60725818b3b0b8ad1f63859bcaa160ada1201579d6bcb814a3dc2ec9d4d8f. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/KRZ292068427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156f8749e612839ff95cd17013f759053ad07820e3ffbff739309098775fad07. 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/KRZ292068428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774c8433448ca46fe7b65a8cbf2b7efbbdd1df729b261c55ffb357698ee2eede. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:47:36Z), 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/KRZ292068430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449dcd299499a708cd8c54968df66f652539b914731b805cc7a303b3e7ace6f8. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:37:10Z), 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/KRZ292068431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44c9e789043ec57036e982cb373fb8ace470f8d521a2093a4682334b188b308. 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/KRZ292068433.