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 0x128c68a47c9122a5642a11b681c81830048da4ffa96789f995c3c1bb37285842. 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/c3244dc2-000b-4a1d-b28e-633a086bb774.json and https://artists.proofprofile.net/proofs/artist/c3244dc2-000b-4a1d-b28e-633a086bb774.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 0xcaae0d836ae0acd9a0c7f3f844648ec594261936ca4ee24c889429979490abc6. 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/QZES92453947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bae38be81879a4b0d06966a10e89b98833208d878b93ecf61dba1b84beb0d2e. 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/QZPLS2478875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f406c105e52617fbd35a35e6810f9a95be4e1dffa1250005fa2688cd136a44f. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:27:41Z), 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/QZPLS2478877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d698d8c536f9a16f1ec9988b41e43af4623f132cac8043c5c0aa71b0ee7f23. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/QZPLS2478878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc144810cebd4b56af905814573348c1f68a04f36cab1608dae13947ef5a312. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:02:23Z), 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/QZPLS2478879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac1974df7e0422ca941e10d399f13a0a45a81c814d1953ee2ef0c250a1e2ee9. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZTB22439861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520c37a0c037bcc322325e1e52008221d60545058b444d50b1fbcd0b81942f81. 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/QZTB22439865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50fa082ab5bdc34883c92366f81b4317b197a4fd2e71330ec8fa45be1f9de4da. 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/QZTB22439867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43584c49793077df0fb7ac23e9833d8db95c86fa3bc20ffcacf30f61b490185c. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZTB22439868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93b3e248332e3758c033270df7548a0808b817e41cd4d33bb494b521de36f46. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/QZTB22439873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d14668e746c972ab5ab186a3f9e58c12a63f3864d4d18dd1828ca6860467f44. 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/QZTB22439874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb7ce093cea3f44878b86fb5387db3d9c9126f1e4a0888d073fc630d41a8b1b. 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/QZTB22440529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211e7fc9fc163606471baa014cf2c7f7e4060d03c6b534621315c6800f751d75. 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/QZTB22440531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb67841d6dc037d5cd9b764adca0b206e4b9d2a7615197a142392490dcec5781. 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/QZTB22440533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b9b0c709fae59c50e7885bfbb6fe591484aa11f1f17bd94a8949dcffcd5cb8. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QZTB22440535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07595c77b68f6228c654c577ec01b80e3ba903b33f80539ee1cb8d2528c3e9e5. 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/QZTB22440537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9180062cc751a9023c48489f77e991ce239d25c33351b41e2389f860dfc5bf. 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/QZTB22439978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915409d480b965097be9767d7620eb797a5a78d5e5a6f76db5c644f4d5351bdb. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZTB22439980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66cd5c856cbc9ebf649cc08a8752c6c144f22caf93c6c19d858112eefe9dbc7f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZTB22439981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb9f828890b1f59baf0dbf13e89f86724dbc6120211a63f1466775ced77d0ad. 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/QZTB22439990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7b4f2bfccaf7ec2875a2e7f08f94ac736a07ea3e8b56bd8650ef65e226418a. 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/QZTB22439991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e913d553d66d84cc49bd0d0e2afd73408e153ade52243bc83a8436cff36046. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZTB52458529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56117bd3420ab71c6c30131074ac663d94802532023488c72b958c5bc119f019. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZTB52458530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7180bb1b88fe470cfae6595839ec99f430dc683f91175c32d552a8667c4fe485. 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/QZTB52458532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbbac3854615fee3f4fb05febaed5c40bc58be8a9308b94d9378a83a88696038. 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/QZTB52458533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229a04225d34f5cd7ea2f764e149b92ac67c3092988f55713b17d650370464ef. 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/QZTB52458538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0b03014ad03ee83c12d5509f09f08df71da28aa1196d42bdbc9a887e012fec. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZTB52458539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3420900a599b070c7e82f9b203a0b4d56a1fdfbcc78e42a9c4a805dbfb0c34b3. 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/QZWFE2413445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33111cebdee5f315fb053896e09ae278824c92f00a9d4faabbec2c5ed5f8e227. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:41:03Z), 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/QZWFE2413446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c417b2e73281e681405fbcb31846f378c57383a8f16babfa1e21e2902d0635e. 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/QZWFE2413448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f2d0d1e3fb1a3f634af3763ff4200a2302015a19dddd60b54cef1ac3001bc0. 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/QZWFE2413449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0d9c179ee5b007cc0974cdf48f533dc313a42917e79701359d10e7d61c736d. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZWFE2413456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b487300beb233d6cf48dd410ededcddf8cb6ae208ad8ad4988652f2068dd2f2. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:37:10Z), 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/QZWFE2413458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0dc5ff7211fd2a293b2e578da71065e95c41c011cf05ac0d6d7e9ffdf2117e. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZNWX2518261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0117cab87db28bf321bdd7f4ce918384b617e06b22133c5032e6e03766a86c. 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/QZNWX2516833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22b88ae9a11dbd958ab0d1adb8405ab638276841af55514d5ca15f02d126ed5. 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/QZNWX2516859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f861301cdac2ffcc25d9a980665b6759cd9990a6bc44e239145bd28abfdaf7. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZWFL2597265.