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 0x2ad70e25633b7309e4c1f5f0b4cce435a8eb7ff36aa8de20359fff42b473db7c. 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/9c53ffae-e538-45ff-ad0f-870c93dba921.json and https://artists.proofprofile.net/proofs/artist/9c53ffae-e538-45ff-ad0f-870c93dba921.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 0x0c86392ee19d5763b4a59dd994279d454444365ef67a40aae4555bca2eddd716. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:47:46Z), 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/QZK6N2337645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74775c529377b203ed7e435600d52cda0c248a20b2fbc523b53996fac3da51b2. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/QZK6N2337648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb6a6d95f08a21811b6f90c51d58eef14d6d41ec7e6096f708198c607e8f9d0. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZHNA2300275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f62365186647f3abf55abad53e1d3d398ae5e815214a30b43ee105366cc1fb. 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/QZHNA2362786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a123ba72c2c7e792e65b3c24a404f27f75e360a589796ca1132cd66470b2ef. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:50:33Z), 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/QZHN32484082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc897f28ab5b0433671a51665e8ca564a3b3780fcc8d3d8410c595a30decd2008. 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/QZK6L2453044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61797d9c95875307ccf178d3a7770a9d8dfe79f77e913b3e628be4a4dacbf30. 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/QZMEM2475768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286de08a54dcdba8abddf73177953e83516447ffd5762319537cfcbff633d127. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:03:44Z), 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/QZNWQ2433876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda479a07d96f56dd8b7433af1ee088a75666552e4d92e6ee9d552be46e96a3b. 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/QZNWQ2433877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b3ebdf76ad78e7dfb0d5ca78413a3e6718f0be8b62b29671b58d04431374e2. 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/QZPLS2456823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb98ba3317e6d33bf0d261eaa811d7574a37d9981299de5901a72ae93c074c0d. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZPLS2456826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0711742b57ee63d8d93c3a83b0235716906658baad10090f12a1768ed8a93c4. 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/QZPLS2456829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf2bc9af4cbbb334a7d6ab42f2c67f3e62695b8b3480f295cf5c6cd79491bcf. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:17:17Z), 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/QZPLS2456830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fcafa3c512b711ec92857231d345d08a37a3c201cb17c4badadc9a7f6be6a7c. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:37:43Z), 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/QZPLS2456833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87ffed7b5a6d51e1d754e520166ff69c33e74eabfc941776f5aab0d070b12c9. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZWFJ2432390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1414f8344ac067c4f70e9a2e86db44822d9dcfb542d4e0531a7ff4a94fba61. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZWFQ2487950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646d6443eb686293055bd33b94c2b1414c015790c53a0dc215906ecb7537d3f8. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:45:53Z), 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/QZWFQ2487951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ea188ccc95753505ab0ca92e46e16b2f6123a59889aa40342fdcabb35d2c24. 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/QZGLM2521322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09014b0045a6fcc67510440347d107b25095ba06a5a6cd21b86b7d7ae1648c24. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:39:20Z), 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/QZGLM2521323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1358f4e6ac6ce45249663557d0d845e36067e264146cd1cc30b5c523fbfb5a8f. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:01:57Z), 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/QZGLM2521326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca5183a13101f839aebbe6b9d329a804ae108a66d8fdeb29ea9b0585e94167b. Chain 2 (Bitcoin): anchored in block 957558 (2026-07-11T11:36:38Z), 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/QZGLM2521328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808ee125e0677be4b04fccf0e1f25fc15aed563164d69d205a0ad53e6233efec. 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/QZGLM2521329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2036ccbfab50e23da208938151a347b560b154fcb087f4711ef80ae7858fe3e8. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZK6F2574671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147e1e31679816e9c6ff618ffd43691a23b804e1e5c165d12a1ec49af99c37b1. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QZRP42584441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd4a842765d97a8c1a79abfbf4dd1b52e161659fd2b1120440b63976e243290. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZRP42584442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe157e0e57cf73d321a2ea32ec1fda24ede93aabbb7c488991447a958164038dd. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/QZRP42584443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40335c06758b16771322115c1655d89e0afd7a46388e814b787fcea23e82c8f. 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/QZRP42584445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce4ea30449eb3e9c3901a1edb8d3b030e32482a522f106286b2543134453a4b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:18:02Z), 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/QZRP42584446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6ae6092ad6dd876e3eef627d810b8a72875bfade2b2b4bd2c1d59b71838a30. 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/QZRP42584447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bcb4cb39eb8416536033db629b6202fc8473b5e5d56b0c3d38d4f94e0ec0fbe. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZTB92552863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a491f4acabb5252925b15ce5fe32af69daee8bbcbbb41ad4af54af6085bd86. 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/QZTB92552864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa383117c60f9a7e8da5db5ef4809cbc49ec5f8253ea6e4de46fac2b30f2c87e3. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZTB92552865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9513487f855d98d637598f0103b55007b268be2d630c59783c2dcad7a2d32b8f. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:07:55Z), 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/QZTB92552866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e774e3fa49386c54d4f1be5567913d954c174136b8560725e3d88fea4920c0. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:48:11Z), 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/QZTB92552867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c83332fc8d1a42c243ab10c68f59a7e29fa0cd4feebb3926c5024195ab564a. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T05:51:04Z), 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/QZTB92552868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c8faf826d25531afcb9912be2b143e93a940aad0ad7325157eeebd6c920940. 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/QZTB92552869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02cb9751f0c7a7e0768c23cee6894ac6ff20c3fb8a9a8123b1df1d4944025bf5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZTB92552870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429426c7634a02dc62e1564caa9f6ed7b9d88916925670f5313db5ed03807e39. 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/QZZ7U2588104.