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 0x998d437a808907fd76c4c8a98f611ae6e7eea54c50e62cc40a82a2478a5dc9bd. 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/7beab354-b62f-4ff0-9d36-ecd0ba5d5a86.json and https://artists.proofprofile.net/proofs/artist/7beab354-b62f-4ff0-9d36-ecd0ba5d5a86.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 0x6283b886a599b34ea249785e4fe88d29c23083acb89176df1fe3e5b9adb5ee42. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:54:23Z), 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/QZMEP2073156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff6795b8bd52ee0cb1fd89116acc37789bd726dd3a6f9d94571237c69fffbd6. 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/QZMEP2073159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747b61d91b9d98a5b9f0052afcf59982afad2051148d1d87f602ede785eb1d2d. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/QZMEP2073160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77bb53a183c9e74923ffef498dfb8574e9b9abfc334240fddc34354899129e6f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:07:12Z), 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/QZPLR2073861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e63f0a5048c235563612778f5e852e1bc8f2cd0662fad71a24d9e2982861c28. 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/QZHN62189676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10be0eb54f704a6047f96539986608e95679dfe929f0cee2035c9fc2b6ba9faf. 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/QZK6M2134578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727b578047e7ac8493609eb3387efd9e01e0ab16540b78d3e02ebab384e7347b. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZNWT2190088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727b578047e7ac8493609eb3387efd9e01e0ab16540b78d3e02ebab384e7347b. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZNWT2190088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c8a9c9b7081f6de049e969ccb2dbcb3051136bbd939031c4445412a208f1d6. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZFZ62273484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4aacd3d43f20eb09979e2297b741a61dab85d1dabe8c0bddf949d17850197fd. 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/QZFZ62273485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22710d02ad87de8cf3742e45a3d14b3edb42166d78fb0e7f4beb6b77ad2de787. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:00:44Z), 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/QZFZ62273486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9b722441eebaa9a397f768f97d992ac1e7b77b88aff275bf1e7f8b6977dc23. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/QZHN42383883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a334fb6d21b805b7973cbdede7484e3f9c71058a54c58d77f095756f680f33f. 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/QZHN42383884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e9dae15b9e4f439bd3811e1146758547dfa13cb4860458cc304353f0ac1c5f. 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/QZHN42383885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13596d1aee67bdce3ad03362147c4fbc4d50e612d754ea9cf882f6f244610291. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZHN42383887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e2f5534582587c25b7f729867c9fa3512dc22ba5128bbc606d22c76c2ce5a5. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:07:45Z), 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/QZHN42383888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512d5a5707fee8c13ef877bf4050f4376201a4c66916301ce73093cc482e4e07. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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/QZHN42383889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e55a7fc4c28dad21999b6e4b2b1059e2477b0d47aafee2958f655140f20ff32. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/QZHN42383891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc992e983fedd3f595bd866b616ad98cb68bcc3e4145e72f74fa330d7676b74. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZHN42383892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a59f0e491fe0e431c0d043006df7b5c37ac57ae709cb4b21a255b45b84f55ec. 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/QZHN42383893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49584b1ea0879f9e0fc3619ed3f12260b36347a21c2cdcce04ce9562692dc48. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZPLS2371995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2585ce3823ad97bf84ba6c238b1f442ca7291ed20dcdef459b26f096543ccba3. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZTBE2385371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaddeb39e2131b644412a2ea60da966ba929ea17bce9fd654a54faa8e411b07aa. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USUYG1538063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9777cc1089812828b917d2176acfd283c6bb4072b53c9f3a39394ed7e4dfa593. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/USUYG1538074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c32692d07dbc5d338e09f00b80d64b847be2f14d1db4597c9af1bf2ffd5f20. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USUYG1571716.