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 0xd389cd0287e817acbcab76e4b6e99a206c7eab253609406461b19c02090059a1. 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/db7989f3-cbaa-4078-bf3c-935b6c758d32.json and https://artists.proofprofile.net/proofs/artist/db7989f3-cbaa-4078-bf3c-935b6c758d32.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 0x3953163a5c3b7bfe85ce6b4ce3cbfb1ae702ee8bb302f1bd8f15bf2e72508d8c. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:10:47Z), 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/FRX202230220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1198a3b35e674ca134fe975b118ba21f8b437387f3cefdc60427f0273c9e27a9. 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/FR59R2295441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9aecfd7f01904656896b6bb4223cd3ae1e3455fde2da0f7ae24bd23231b6b7. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/FR59R2295443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c9e5f780949eb2466a89ed9874a718210e63b2482d164dba6e4bb16dd717bc. 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/FR59R2295445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28285993eb7c3568e6cc07aca4da1c8ae8bf33f69522aef9f793a68c518f9d80. 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/FR59R2298490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7913b1fff47b33295ca3ca7ea0f64b36249cfdb35f3f0004dd5a2d99e5b6f491. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/FR59R2299000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2fae0495787ea3c1d965fde15b00a94c50fda0473e51b67a36366a359b9c5f5. 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/FR59R2299001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dfc62a283efb1e17015d05443f32212abfbea7c3eb8630fb5336f0c45fcb09a. 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/FR96X2204206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c04348c20e38782ecb7959841b252dfe3f52a6e59948d3de1c8e2975b3d880. 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/FRX202231713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0134cc36c76b96bfba8b2dacdb51faf7a84d2f46387318a786709099a08c60. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:02:33Z), 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/FRX202231768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b78bc7ec5edf89e77b887b43d014b07ba5a7384795fddc1306cf788bbf0f12c. 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/FRX202231769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a21c451e5bafc319c29e59bb64d996652575e6bb566042119de30285e74e87. 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/FRX202231772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645b12df843b59eab5ec270e9b80399ccc73c22bf8750b19443b8d9b60bfe28f. 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/FRX202231774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52f39d2adf311cddf2d6a7d15400da7ac6552f039a268d01891e0a6ee56abd2. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:51:19Z), 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/FRX202231775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed4289ecb4b3c3373e66e5396b00ac2e07201c531243edd10baf7e8c9cb174e. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:48:57Z), 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/FRX202229006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2508c7d66ee0413883317c3d4ab597de3be3ed887bc869bd9e2575fe4034bfaf. 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/FRX202229007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0737ff2ad9fb5c56a589732509fea7e7058412b3c2c4b97e2208b4e706a6da. 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/FRX202229008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78e2255eba9e5ea241961e42fc096a8745de2a2404356865fbb08abb1ff0651. 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/FRX202229010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198bc164742880a81d938cfd65cc80dd0d95059f0cbd287f12157a89b938fa93. 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/FRX202229011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff859401b2749ce35f5667527a4fcaa0827da4c4a0a71665959b81f769174327. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/FRX202229014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e258106db73db51869d08cab2c2ac5ed414dd12262729a5a39217e6f7dba4d2. 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/FRX202229016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c81165575c8b6a450fd3d5f00a8c6f69055cc0ab50f7cf87e540f48deed6381. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:26:00Z), 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/FRX202229018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406302ab819b6c3863d1a2ca2a22baa3741215ada88daa05cd4d06fd98fbb246. 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/FRX202230170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5da03e7a7a139eca303f786b2b365198986becdaa457d2f6146a94289e9bd41. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:43:45Z), 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/FRX202230174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2ad4bcc09a6ca9ecc43a15657d5d85d28f143df422e2b188e5b74e9c75f8b9. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/FRX202230177.