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 0x84839a175015a1f2129b155bf15450dc6dd8acbfec1b3736ad3e24fdfd415dea. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/53c2abc9-6572-43e7-816f-2f3f832f9154.json and https://artists.proofprofile.net/proofs/artist/53c2abc9-6572-43e7-816f-2f3f832f9154.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 0x0637ced7854cc64c6d808011bed8fa4ce834de584bf6435b64b794f37c809dfe. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/FIUM71300156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca015abc176e54ebdfc41117424153b8e306d7c29da0bd0e27d971cbec6ac6b. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/FIUM71300149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32ea090e47952bc40900e0e8e77a382620c27fb13fd0cad1d2088f4700899f2. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T03:11:19Z), 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/FIUM71300150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffa16f1fa1b13f0d8249fb1fb39fc2702d67731edc74b35b518ac7c39a88bd9. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/FIUM71300148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272323986a20dc1fee847fe48bdcdca4bfe50b8ca03aab9abd94baafdf6ca5ba. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/FIUM71300151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02393f8c58a54fa3f09c8305b6a5b0f6c0dc5c11a94e84965ebb02fc118e24aa. 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/FIUM71300158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4c96036037c21e34932efc820d05e0ca6617eb1ac5e225e81681ce8012561c. 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/FIUM71300153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7118e804cd8668e02be48137de550c0ed8600e35c81723a3c41c09d7737cd5db. 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/FIUM71300154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5be50eca9b291ba52acc579f7be6a33f0bb6cae4a03dcefc145029e1838bad. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/FIUM71300155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2542a44cf3c6317f899193833ed2623848964eb3c23a97c37983ebd84f4d52af. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:29:00Z), 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/FIUM71300157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8169e87c7ccbb74c819567eda94c8dde1a89cf491b675dfba3bf300e1377036b. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/FIUM71400830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf279d4f5457dfeb2c2ebb2bdf942e4cda03b07153b988390a5ee32232a6f5a96. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FIUM71400831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e8f320201ccd6721bbbda7e04272a33d4e8653ab5a91acf32bb196e1cf17d4. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FIUM71400833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb943979fa418f127ba55892f1034cb32f66c890d58d6322dc9e7a0ca121980b. 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/FIUM71400835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x073f421c29492a3bf4d731f1298181b7c0784fc75eb29aa7c34014035e780ce6. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:08:22Z), 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/FIUM71400836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04deaca6213363ddf35c7274bd306bb257b67e9362ca83f9cb0ad5660e97ac49. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FIUM71400837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ae4a18e7d5c8fc61af9d88ff16a9c9b074f70784b41d3a5ddfdc46dbb82611. 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/FI5ST1600077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21ea7fa08ca4b1608276fec1dfb561e93ffd92a1cd0d7c2a2945ce1677873cc. 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/FI5ST1600081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09725fbea4aa93002555f16e9fc3b98251f2c03b6e3ad77bfd176d524a693005. 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/FI5ST1600082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189de101cfff25ca4382fd2192a708db8d4eee2bbc928db500e99304d653a551. 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/FI5ST1600083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b218473aa19de0133b6ce9f39321887eefeafc2843171d802f74f7ff9cd758. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/FI5ST1600084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8237a993847962fb0824b99be653d081aa95c3d3389da51c3fc078816d1b010b. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/FI5ST1600085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8cc8d709705208375db6fa953b81b9066f3b4b6bd553f0ba84104af8895cbf. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/FI5ST1600086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e1bdf8e4c43e247c95fa4b57262cef617f14b18f45c79a466c0216ec654ae1. 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/FI5ST1600087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f50def9c510f308d5de8f2140634416bd2449c9881538d5f82682ef42bf94e. 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/FI5ST1600088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92c7bf166ad4f6da54379bbd16788a41fc3b4afb8f1923497a2c70bac716857. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/FI5ST1600089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680bd06d6bd277c02d61487279934135557930ea78e28f5ec04693c8f342ccb9. 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/QZ8DB1700189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc789b36290d08dcec9cb7ca3437081e0705f38db37b09383147517f507f8ef33. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:30:24Z), 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/QZ8DB1700184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680bd06d6bd277c02d61487279934135557930ea78e28f5ec04693c8f342ccb9. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:11:07Z), 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/QZ8DB1700189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020c88366c27ef9bb772d8d7a76f0b2d95db1a3fda8de683d33b76c772359183. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:25:25Z), 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/QZ8DB1700190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35372fef2f1ef21fb501e53834215992c9481af78a9697fcfdca50b8c3a8db2. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZFZ62173401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb118ce2cf18d6a38954b580a6f3abd1a63ea7fc549e64501b5b4ee863476ef7. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/FIYRX2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae61a1fc43e9a49cb0438b008dd9d564adfd7563c0f145b323f6df2b15ce1e7b. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/FIYRX2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9cbe7d59ff97c4e6eb0c8aea67f465a7f3daa7c21c23f677aecb1a7ebf26815. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:04:43Z), 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/FIYRX2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083aed53c36895efe410a55bfc649aa3c433e8b5999e04a2bd4636952c138c03. 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/FIYRX2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b585cf108abafa656d521093b5b56ee123d7c1721d38016054dd7d23864ec32. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/FIYRX2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9081aae0a26b93053a1b7995594fe3df3a858f2d32340bda3b049ad460571ea. 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/FIYRX2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6696fa3dda126fd4e10f0fcb685b9ab7d8ac291d9f58de93a41b3b0f78d891c7. 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/FIRAN2300051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65b4b77081908abd2fbce5f00f7b63e90e9f7d5ca26e35795537476194cafad. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FIUM71500311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65b4b77081908abd2fbce5f00f7b63e90e9f7d5ca26e35795537476194cafad. 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/FIUM71500311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65b4b77081908abd2fbce5f00f7b63e90e9f7d5ca26e35795537476194cafad. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FIUM71500311.