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 0xf162fc4e68cdf11118f973232260660558432c5dc8bd0538f7e444f6c12e43cd. 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/a649b043-6cf7-41ec-a9b0-a15ba7809128.json and https://artists.proofprofile.net/proofs/artist/a649b043-6cf7-41ec-a9b0-a15ba7809128.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 0xc14dc2bc57a9dba32a75e41685413732954fb10aeab9806d7393b8cb62919610. 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/QZTB92233682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1c91368d899c4c8537621d387488475f3f580c80b6f980ff05226aa40ddbd3. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZFYZ2384595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14dc2bc57a9dba32a75e41685413732954fb10aeab9806d7393b8cb62919610. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTB92233682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589490b09ec9123bd864232f840e52226c09dc23328b9dc4a8fbd5ea916166ab. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZFYZ2384597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f9cef57b9b7f3465a861e8ba1ba436ccc660493928018f8c3e66d398822670. 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/QZTB72408887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3cc145818ef74fa774a9d497cd0431de95e5ce09759303979a811404d4ab4dd. 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/QZTB72408888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4ff64ac229de623adf88b5e319c627537163ab5cd144016dc1cd659aad3a4d. 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/QZTB72408889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0be205dd35863f3cee499dfdb6ad3ea6c0e4bbd08709eac9c33ed5fdd7f1fc2. 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/QZMEN2397537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32af95af7cfd018da96338b3b99906562bd48b65327827fd7d09a38b43f0bd40. 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/QZNWV2386588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f3dd71d94d1406cfad8a9a3fb9f3cc65656cecab8a7fac9818e6e1caa456ee. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZWFN2313352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11144f0db9b0e771c50769b70c96d9b18c2900055d7442eb67955f04c78a8da6. 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/QZDA52475357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7baf4cd9c390462328074534406f19e90527e98b257b2c01fa6eccf8f2e28e93. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:08:45Z), 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/QZES82450001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23505b8027fe60a51a9e460f80c48b44283a29101abce0222965980a6ab6dd4e. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZES82450003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2720120e8eeb856cf6a8b61c44ad234aae0986098b7313a2153fe09e19e72071. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QZES82450007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11144f0db9b0e771c50769b70c96d9b18c2900055d7442eb67955f04c78a8da6. 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/QZDA52475357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc883c163cf5772473c793f8d88b9a7ca22710ad30a890cf5a9b36b331d5577f3. 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/QZES82450008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30187ec551f6f66eb10e1c167d4496c53745f3bf2e7e23f2be8bfd77272d8110. 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/QZES82450010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f3dd71d94d1406cfad8a9a3fb9f3cc65656cecab8a7fac9818e6e1caa456ee. 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/QZWFN2313352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f18e4653fff652cf615c7a18fc217405c4df1eea81b2c8b93988a8dfa0e542f. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZES82450015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97fd76476694770ae644524b3e3f4bb0c63be0f410eefcf401e0f61744388a11. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/QZES82450018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bef9f2abbad65b498f07c4a13c2dff295b994e331bb7fbadfdc75156359cac6. 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/QZPLR2460676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x772c6a84a433d8714814a0166a00dc6e15844f826dd13e2758a67b724c77fa5c. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZTB72438005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f300aaace46d3416755d2d19f830118d717bbf85865fef79d7feef7d268812. 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/QZTB72438007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b3261dfe4e8b7d3ab9328584e8aacd3df06fd3278be310ff45eb448a976f21. 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/QZTB72438013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58934d19346b92cf12bac751ed68c48955da1b99484d9604c09b6edf4ff9a68. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/QZTB72438014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a4f321fac290e2365fe20365b9df914a133be12529d9e92509515341fcfd35. 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/QZFYX2500629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6c4ec435cb18a99d10026bb3bd8ffd0a550c64b408f642cfed6eec390edb4f. 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/QZFZ32515811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f52ea21730e55a100320cc709b97ee3c3b46b6fd3590a2e261c53d5cfb38733. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZFZ32515812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa529c1c2051ead770a3d83154ca117eb8f76a7fb6bc5d994ce3247530b5e8bed. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/QZFZ32515813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7dec3416636b83ac8629f3187e1d5b59a1c2a8d7ba5d8dde961f9f178e857f8. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:29:53Z), 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/QZFZ32515814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef2aac280026eebf9cfdb509440a58c3f2219ea583019fb7cccecbefed08ab4. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZFZ32515815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d0936e6be3177d80788331a8f17ad13e7821a88f2fc51da604711b49d8945d. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:25:45Z), 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/QZFZ32515816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff73c264d89445693727cab552646cabfc5d417bacc176b581885692d7269ba. 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/QZDA52578237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea72ddcf6f600c999b8d0771f3e043a04023f89ce1632f6262d66c7a71c2fad. 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/QZK6G2512925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df80de1fe39349b23ae54aec7bb2eda58a7c6bffed13421739751edfca86f7f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZDA82599855.