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 0x667e5abf4e517e5819feccc6a22cf90781addcaf1d75b1ce8014babcb55d5695. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/51b36f06-c8dd-4c95-a59f-9bb718bdadf8.json and https://artists.proofprofile.net/proofs/artist/51b36f06-c8dd-4c95-a59f-9bb718bdadf8.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 0xff02d283c4fd9e22bf34884e4b787fd96897762117b45a3d29803508d6509869. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZHN32501537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab23ecf38bcba98f1858b1427606a509b845441d5f6c215514aa52a816ab29a5. 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/QZTBF2523006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc369fad9f5d21a2d946dc896671e979250dcad78eef0d6b9190d1060dea35436. 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/QZTBF2523074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ecd32d530832e195b8cc112f1320b1e648c17bf099ebde34aa14a0a407e9e4. 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/QZWFH2547708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40cc5b8153385d567071cbfde832f8b26401deabe673d4fb1e3a1b7fa3fbd6c2. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZWFH2547704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e249cf0de52743fddf00fa94a96763baa27e3f4379011f42ed5b1de01add9e1. 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/QZWFH2545642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd759ab59f5860f30c658ffbe01a8bfa1cef96c1591ff783743ad32cb96aa58. 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/QZWFH2547715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8b4f0da783fedb32150f602dee4f50c51f576f39dfd5efba19263b097a2ccd. 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/QZWFH2547714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90af793ded77fc58900210811ccfc9ecefb048836ef75f926c303f1b67e15b95. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZWFJ2520755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c8d9bbd8daddd24868ce1f25caad6f098049e2eb1f6d47b0f052126f5f4400. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZWFJ2518197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336a1176f5cd54a08ad90d97634a2ea429333505ce36f1228c222b57eff868c3. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZWFJ2520758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8c4ce91a1b14dbebf39a70bc337c6bd978e9393c7580532cf4a8f5c9c586ed. 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/QZWFJ2520756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5064e09b89bf3587ed291ad60e03dc92bc67adc940cb4671ea5da0e210fe375a. 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/QZWFJ2520753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74cc7f4d7032f6235770677d803269403892d3165e50cccef4a61750efb56fba. 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/QZWFJ2520760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe86ac9a16200f114c401014ed65dc2a3bf18923d83301c103e822b16e62c6d2. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZWFR2548141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b292de73885b020429bed9ebc8bcb261eb1742ce74da447e61e31048941558d. 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/QZWFV2534097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e260b3530b3a99fe5e3299037d30906e8d79b2e15c85277b9206f2d133baa8. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZZ7R2538712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e1bf00efdce5dc0a3f383e2e6762c67af98821b74a87a4cf901a06c2b8323e. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZZ7R2541643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7ac4349d4ae1dfa5ecc7aea846d0fa13fa5e0c187cd580045d68aa54c4cd57. 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/QZZ7R2532633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9050902fd4ef4813357453888e5114b4a151c933bebbf8608a542f95fd15b5f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZZ7R2530046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d73ae883a610297f6dab2ed8f6ea6062d5dfe0aee0d9dc7b9c2550db60712aa. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:25:12Z), 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/QT3EZ2566120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1a2a8547ecd45a7eb43624660cce4c59e73227259920e82824a272bc3bb55d. 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/QT3EZ2566150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a2a0d236c44df3d92be2df6710a3c44ea7df384c74f3ac6b7ed630dc2b5322. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QT3EZ2562394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34fbbd622ed0bb59ff7b2b20e4bf7fcc806cef6a847cbc9376e240e0e40295fd. 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/QT3EZ2562326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef26e76ce364f9df52db8f399890385df1dedbf21a982c5e1929e6af9c6c77d. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QT3EZ2562391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293a49fec32cb3da7677c7aeb6c4569e90f94c858bed5489fa8141bc14e513c1. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QT3EZ2566149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7372a84edd051384a278d455394f2c830a5f1d43902ffe76c61a72f37368cf75. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:28:59Z), 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/QT3F22567354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5e492215e94595ed83a4ba4b61baf45100fe7143e30a4bab428e7047c7d2ea. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:27:17Z), 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/QT3F22564216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4586134adc492d43a0f6e97c1a18b0fa120864fd9741076dc9cdc9c3607d74. 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/QT3F62573610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd658c89af919811b3bfd4993676a731cf4541a4bbba1bc146854047e37293356. 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/QT3F62576974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4ad1a4c7b31448f36ad20544c2185cd1eedf799ecf5c1aec96f60aabcf9158. 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/QT3FE2595109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732c77f048246f3c39b35bb9dc64c9663040350cce320f2a08e2706af65b05d7. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QT3FE2599844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65bad079299af749cc3d6296ffba5a80ab19cbd69cae929fbb901e169ad9c9a. 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/QT6E92577239.