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 0xdd48baedeeb6f98f429affeb292a2f8b83b32dfc876d63c4a44866c8ad2fa6b4. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2595f2e9-4877-4d70-9e34-addd57291c34.json and https://artists.proofprofile.net/proofs/artist/2595f2e9-4877-4d70-9e34-addd57291c34.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 0x14bf14387aa8b0c51d5fdc3b3ec09384b0f06bbdb5f60a43f3b781733b8edbda. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USANG2227871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dbbff11de456084972924d1eeb93f319f6847c8db0446f7cf09d41003fde1eb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USANG2244121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa174028d3287b8f4dc1a6888eeec87efe23545f0d141e59e419c4db3d20181. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USANG2250611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c947a5971348d754b632ce5d66fc92087b3b277288a902bd161d129f810b1a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZFZ42144074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbba042b7223cc75af23348f857c45da05e13bf7aa485c966494b4542a122f6b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USANG2205222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252fedf72897ddefb4f8fb572e1296cac6d45b67ae21e95482eb95c6ffae4d14. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/QZMEN2134106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ffe50f58356d93b5e9fce5c9988f36b0d0f729ffaa58fc0e6911fd74928bf1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZDA82118746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957a7e1faecbe2da975b3d5171f105d221636de31554fff335723f53e707f788. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZFZ62155071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df0709373b02fdf1e58b934926005b215b7443b7bdcdc29cac96b3fd13d86f5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHN42012502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa174028d3287b8f4dc1a6888eeec87efe23545f0d141e59e419c4db3d20181. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USANG2250611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b25989b853177dd0c15c510d853d0529dfac9988c867969cbce2aea6e60cf8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZMEM2062019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd0209df6df9e7f12bcf6a1669f51b34ddce34b8a407b91608396422c6b1bca. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USANG2241483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae04ec4b5c3666398c077be71374bb05e070da5ffa2a7aefacf22b2ecfaba4b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USANG2241495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827d1a918e67a3c6090ec694afbf93951b1edc9aad109455dbd6ab95db851661. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USANG2241481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4d0bd8b1f3180d27a356063aafc1f1749b9f0e7cde9b538d69c53b402be5ac. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USANG2241485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f57c5fd7bb51aa6f46a638d012b24199452fee908ef728e20282141f4f95a45. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USANG2243704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a356663dbb5758e045219e4b6d54831686064f02816466f66777177dda77ad9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USANG2241478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ff278919f5edc8f05221d5fc68e932b712066e10c5083c60be6ef87cdeea04. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USANG2241490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86d129f0a451606d6c7328b6f7fbc473ac44af08c8443c99a3770d997433187. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USANG2243705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7542389a8caa775622fd05f8ce78c876cba93a674dca7e41595993c7f8e1a97. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USANG2243703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47118c0a1b2c2832f1253dadbd53c3c7a810d7f5f570ec93dfc249f88702cda0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USANG2243713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c9405e555a57187eabfd56bbb6e7491a4cbd9f467348c137ea7da1e9921fff. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USANG2243721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c389d280f6e4f2bc4a41f6a0a446494efc366ca4ec19aedfcbd3a4803fd59b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USANG2243722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9ef0d9b0e6c8bcb7f4badbe6200487eb4bb44a6ca633e9652584696108c06a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USANG2243757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe367d2f57f0e491c26171a7f513c5da777366cae85fe83b94e17a4520fae669a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USANG2243723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4067b4d708a3ed1b481ef0c1cf8be3068f4fb5b075e5adb8e684c736184abfe. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USANG2243780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225962ef669e5940fa1bfcb53d6a184cdbbf9625d4f3a54004242a3eb739fd05. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USANG2243789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83583f0a428102485709a8fb935d3ad074fb51995186c2f95fe5eb137bda127. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USANG2243798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1faec8df717737288de747be5766efa421bc5e22513fb0dfa9696131d14ef7df. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZDA42521072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd673bcea0395f505c080ca24f8b3dae9c4ec31e9979ad2d2e85890de31023c. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZTBE2408697.