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 0x217717673f5810faa5e3bbcf3e23afaee980c0d88fd8e6c2586a206dd59cb1ea. 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/eed6d61f-1a3f-4404-865f-4f3cebc7077f.json and https://artists.proofprofile.net/proofs/artist/eed6d61f-1a3f-4404-865f-4f3cebc7077f.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 0x2d377da7b8eceff5509cd46e1def8c188f4f3cf49bc5e2009c2a90e1589578cd. 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/UKFT41808222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4bd2d3eaaeafb3ed2f671d140fa3e44c7d6e192ba7376c3afb86fe71c13d7aa. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:57:06Z), 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/UKFT41807729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1c9841f07711c094b0a2ffb538b129de563ca83bef299feb0fb11cb374baa7. 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/UKFT41808193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f975682bf929617131b7157c3fb60e6f10e06384acf0bd055fa0ca0d94b05cc. 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/UKFT41808227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5a6b5e37dab01938bf673330884b1d71fbcbaefcd852fb91bc884798c106c1. 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/UKFT41808226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c428fdda18c6f69eeb9690ef12fe6d0bb60720d4d96bcd1a6801323e9cd6114. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:24:36Z), 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/UKFT41808189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcbc0dd72ddf4888dd69aa472900bda56519450c00d6dc82091479aae1c77a61. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:27:42Z), 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/UKRKJ2001824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff2f3da79cd131c00f2e91143bb4de41cfc16ff6ae3267922d222694440f121. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/UKFT41808228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c1d9de287cae1b38636ba73cdcef4673624ce79c46c632e99aeb5c0e02027b. 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/UKFT41808312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26003454bc28e230ae57f54352cf058eaaa75f937e3a9ac4fcb4e87a5fad938. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/UKFT41808309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba4096702aacc5d036d07a4725c596fb8ee10b85337aefe47f5ec79bf644b06. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USQY51716854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6efcfed7ba71b7caffd878c34bdd7dc59ee58749196c09ab08cf9b13d448f05f. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/USQY51716855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486f4353896824d1dabf511c8e9d4ace69bbf80a03a8b42a8c6503010f104c49. 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/USQY51716856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31c22447ae5516593c67e4039739c705268b6911c674375b0e6af084a06402e. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:06:28Z), 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/USQY51716857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9525e0694d100bb07355b358ccfcd711846ce703e6731dcee0c481f1c7cd78. 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/USQY51716858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f41f5f0a38b266ce062cd385156060437d7311d1fa7b09670a02adbb6ed36a9. 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/USQY51716859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb304ced4413f619269b782954aa7cbf381d30ea0edd9e4736a4b2f9738a85220. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:10:40Z), 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/USQY51716860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36228cb3b5233b8dcb0e0c8561a5336d6f252d11bda7136b813ad86be508c756. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:40:49Z), 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/USQY51716861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad862acc8f40bea634d2bf508c4ca30017520aab3be8dbc22509435569b8754. 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/USQY51716862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fdd9d4c2699e5ad07c648a31e7f32181a01541b5e886c0aa125e60e8a776b8c. 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/USQY51716863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4b8e11f6b51dc6b0df12710277759c8d28e7615bf95b8eb452752798cf1502. 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/UKFT41808295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5cd4545439e2625b4973719fd885a6ef31eb0e9418609bbe517af32ee8707fd. 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/FR10S1770571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9546e93f7bb1fcb22b52213cf069532fdb53c696944e9e2fbe716f9eab922dfe. 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/FR10S1770572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b17552bbc3594146a09bb2b187ec16b25222b1ef50df626a6699762c6a4c44d. 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/FR10S1770574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb403a16c2e76de2335e1cdb557c79766c94bfb657ac629b2215cac6aa8779331. 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/FR10S1770575.