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 0x0fcc5a47c3526b2a2d9f314713eb3786d8a35497fd9852ed426129fc304fce79. 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/8ee2baf6-f264-4a0b-9978-f6462e305c77.json and https://artists.proofprofile.net/proofs/artist/8ee2baf6-f264-4a0b-9978-f6462e305c77.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 0xd6bf430a64c13585cdd5d458820e97c41253893258e6e0eb1510dba2c98e1598. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:27:23Z), 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/QZDA62025594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b2805961992e08a2a97b3c205e1c03dd64e94ee24826cb99c50e816e313386. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:09:10Z), 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/QZDA62025596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba39c2b5989a470b571bb3bc5d849b8bcef7cf197ae9839a2aa63a15c1462ad. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QZDA62025597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886b6d3b452e9ccdab5dba3a10132a8a360d63ffdfcd34f64356af2aa47b7010. 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/QZDA62025598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d6ca2bb484686f37d1503a652dec5fcb321ebdf9a513dca28ef9a40cb2adaa. 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/QZDA62025599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151b1f82876087b50be3770ed12380af02971f583bc6af580b6f20fd01d893e4. 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/QZDA62025601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d3e523c65c0ccc1124941f9127cd669ca584862a56c9b5f296b3c7505e6ca5. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:03:36Z), 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/QZDA62025602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde7ebef91ad3a23dfd19c9111c6701b5e81467d62b5558e0ff3f209360e6267. 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/QZHN52096366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b36390a3bdd49e98f14c28e9ffa9ae38ce8c438da575aeb01e28fa558848b89. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZHNA2022675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc54f24b9755092a81835c38838d79d744431ab656558e89a78ab378807d7ff2. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:19:06Z), 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/QZK6J2030722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0553e66502cf334049fc3a20f8497175c9cfcc1f669eac4b0f9f7e31042150b2. 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/QZK6G2038984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87cde47ab76a0f786cacb514554dcb72002b82139eae7d0c387a65998b2d2f40. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:38:59Z), 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/QZNWZ2024663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb2f1596c0e89fcb06cd4d85a90d2ae5f58af1e66f59d18daa526891cda58e1. 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/QZHN92101101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97eaeb863c2a9cb4b6d541515dccd0bdd0c4e544059e9d2b09909a558017b0d. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZNWS2188055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa61b19a0b254646978d0c6b13b04ee69e1a35cc3360f1f959d84b512c7f8dc3. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:35:05Z), 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/QZTAU2178207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8d8c437f0cf7c360634d8ce50e372b42734fd1edf5f8c2a1d5d7e200bc7552. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZTAU2184378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe688a99a4678a2fb03d2362d3dd887438819e7d89f763990b82aaacb6c33e112. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZK6H2231045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff42be9c6281adf2b35768626bef164c7eea561f9463c25fb03f928d21f99534. 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/QZNWW2279995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4913e90aa7677776fd9f53a26275a5971194c3e5fb19aa7a171d57348831d61a. 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/QZFYX2330154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5791091203938df9ed7f3ca20305fecc947aed1fd43d91ba7a47f160da3ecf. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:11:05Z), 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/QZFYZ2377072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb1b15ed1b1d6bdef240880bf7cfd2d1009218985660b9e4d115b2f0c654c985. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZHN82306971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2950eef3baf75e7a4ec7547c94127e28cda56052d6ccddcc6a4d2b6b4d4cd323. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T18:26:45Z), 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/QZK6N2311898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6422b822c813682bec2b525b0128665d9af001c7dee24ab6179a60e2ab6059. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/QZMEQ2387588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3916c830a8f670726aa9937b6ba20e740bde58656d44ac58d5c301c09bb6842f. 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/QZTAU2353773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xececfe42e268560ce1d1d3514b30b838e9dfc0cdc93217ba23648750f79e8fbd. 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/QZTAU2349734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14ef601ba5f31c807392c31a009eb6262f1d4918e6441a95018673356e93984. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QZTB52339202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12cd98a7dc0b1081fb0f9c9cf5af7de0a7c34559eaf44aa9230b3399283428fa. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZTB52397728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0702c3f6516a18c6109928100684085dfe1e9cbaa0cac3a3811b248cd235dce2. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:04:17Z), 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/QZWFL2309988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c3d2643981113f90832323b3fae322f067f079834711310cff3fceda0a84aa. 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/QZHNA2407340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfc1185727a0e3970a6ba8cdc80686ad64427efe132242d944e5a50b8f17c46. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:43:13Z), 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/QZNWS2422282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb858001ef2f1a61f644a7d0ca3d07abaa694e0f631b5e4e6c6ef0cd171c859c2. 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/QZTBE2460849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168fde8a6e48a7e2e79bbc8621195066bec1a8559d03ee08fb3863a4716ab648. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QZZ762401837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1436485027e6b5ced698e974f53a724797efc3442aba95bd15fdc58e6b6ce7db. 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/QZZ7K2450946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4992aaa840145dd157bf5c3da0a3bd76df8bec8f6baaee2afde482a3624793. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:38:29Z), 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/QZTAS2584552.