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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a17fbb111d34dc40c5129397272cb6402b49ebf184751e24ea7da1d8be77f75. 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/3f4e9020-23b0-4522-8139-f3a414f7086f.json and https://artists.proofprofile.net/proofs/artist/3f4e9020-23b0-4522-8139-f3a414f7086f.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836d42741645119d91c454fa6277267cc47513bf4d62f56107df5322da186838. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/JPBV09201300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25a75098af344ea46b084de05be3bcb35ae58f3599c2426cc00bab7e6cc2cea. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/JPBV09202760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814a36722ab81793089144280fa16ce20cd2c89ce9c893647603516831cfab74. 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/JPBV09202780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc287337ef002d4709eaab462ffa5269d8fb98842d20ae32f9c1dba66abb4f6f2. 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/JPBV09202800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x341f143b6900601dd30d8f17e92091b445cb1a9c30e9010de250eacc05650380. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/JPBV09202810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41ab26666a506eeac8c4f940b146ee52b77453d25b0edb528aae0c086adb458. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/JPBV09202820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d45a5906b94ebf287918db66b0ada35dd25d4ce176cc3bc0ec46ec310cc53e. 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/JPBV09202870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53acfa0eec33a57fd5f435a939febb76b5e63a93553912400e7047f273edeca6. 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/JPBM09901205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b80b22bfd6020cc553b050cd3451c6054afddb5d6ff7db01be0a50d1291cf3. 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/JPBM00201207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14fc52c4cf0b85805fb4286dec984f5d844446b01e2a5a476342e426c813cb7c. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/JPBM00201208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6596ede259dd85977ec84266071c85494d637f11b04edd6ca3fbf8374c89d0df. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPBM00201209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc635e67e575191d87768cb1e8dd6a4db34446b0472c8d26cbaa0547db7fa56db. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/JPBM00201210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d064a79d036390897b5d2b2b0cdbd28c22d7ac5b0dac5032e9fffe9c28e44b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/JPBM00201211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d4c67a390502396605811244fb29f96fe9721db8ffdc1f12aad8a1141b9aa8. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPBM00201201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0264a429ac9b0e9cff0fb37612fd88931419f7c7f5cf402aa64f965a58ff64be. 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/JPBM00201202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89eb327b211bd0e6f1e70cb4816ef513f844eaf08e153081a1861339ca8a2b9c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/JPBM00301214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464ce089268993a37ea234f0e5fa15a346766d89da0d3b20ca9d0bd5069c429f. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/JPBM00301216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6520c4428d5954ad62b74334a1b149c0af0da3d8a1d85e6f015bb3e6f6bdd7e5. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPBM00301217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a4f81c916d6bf887dd1dd5ab3097d088a3c2195521fbc33d2b4a61532edcfc. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/JPBM00301218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4aa5e8e4f59d783c28117c90aa5146d1df170cca09c90e7185ba274f53af606. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPBM00301219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e383c42151f04cdfe4a2954d291a4d8b70b3059f9bebaaea328c429b44b4d4. 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/JPBM00301220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7aa77bfd8fc582c734b3bea62ceda2230a25c6e9a6db4ace5c297855f5c8b5. 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/JPBM00301222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6af145f976f4edeef56e927975c5ad095842ea907bcd512ba0c9d42193e8ce3. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/JPBM00301223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352a573b6dbff13d69258c04b6ee69d285adb898f2da941dbad16014f84316df. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/JPBM00301225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e75f8b16643020950bb23348fed7800a488aed40761b75897e3b7b879e702d. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/JPBM00301227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26cf7ebe570ddf4a866fcf8be945234def338e6b2c51469f15c8982d857e370c. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/JPBM00401235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934e02985f63bbb3854973daf29c77e2c4b9a5371098523181c35b640888b8cb. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/JPBM01205008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a46bc7a03d914e7611693e12984dcf2e7101ada83639e37d12c6457bb3caee. 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/JPBM01403001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9bd807c4c9fc156e2fc89d5647a3aa642de23b957925ceeb6ca29d2536634e. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/JPBM01602004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b540e31e22dfff8091a57f13d366bd724307faa5616196ee6ad9951480642ac. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/JPBM02004001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e11127a5521729cab96bd3e7516657d196961872c6ba4c73711f2eb8c67d81. 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/JPBM02004002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9571e06ac5e7ede41b1e9b72cf5694f1edf2d760dfb3b2672f79b27faf3cd921. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T13:24:39Z), 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/JPBM02004008.
EPIC MATCH ～ the match everyone wanted ～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15a9de53dfedf6980fe9b285822fbbf152873f74bffd8616e5841527d9d4c95. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/JPBM02306001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cab5a879df29d50cc42926a35131f40285684fcbe667110736c77b11c027324. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/JPBM02403001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33d375f0257c41ea17996faf2c29f4ee82335490ac961e16e0385b6034602f1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPBM02310001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95bc5e2ca4f569cc0eaaade0187ff7f416d64d89ae7d05c5df6f052b3090f383. 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/JPBM02405001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3dc67a2621965f8010840bdee55c80cf15abcf0046e84a0c19bb18287a9563. 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/JPBM02406001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31266470b197b3b38b9b6aef74323d802e03fe74572903ddf6b8f13d4904285. 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/JPBM02407005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a3189f700fe7b2a535bc27a586d5a982da6c0a84f04baa602b287deb44238c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPBM02407007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf2fcd81f6a0e75cbf2e7096c31872adf4a8d8fdbcff4fbd16e83493b050548d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPPO02404564.