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 0x28e09a4e4441b0762100b62ff167d230990211bbab11d8ebade7fa7ebec2aeec. 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/d33fe46b-10f6-4032-ad52-a406885dbd80.json and https://artists.proofprofile.net/proofs/artist/d33fe46b-10f6-4032-ad52-a406885dbd80.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 0x3c74a6cf573ef4f36380aa9c280f4ae2381cd18026d9f5539b61be70aa7c5030. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:56:33Z), 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/USCGH2111057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b6ab1a79f5f7fd729848450b21f1bf3acf0310bb16a9587e3b64d747dda0b6. 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/QZK6J2226586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79cd3c845f530c3b92ddfd7344ac227cf866b960727944f67728e8639a8875c. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:39:41Z), 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/QZK6G2215271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d44227bb71b735e24bc27bc804f88c8c1e3c0e3c376fb3225f8ca8a25a9aee. 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/QZTBA2207525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ce8dac9f5923999c536469d70275d1c32e6ab6cc3b908c818aa727474d811d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:07:38Z), 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/QZFZ32361019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11bec0b6c9e7a8b81adb8b36baa3f09cc0c91c121a40449a9b1c9d51ed8c178f. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:32:09Z), 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/QZFZ32361024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81da29b53146bbd9e109e4903cfbf080fce6ed3490aec13e7ab268c070d4fa89. 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/QZK6F2357272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6435d707972c4823bd9cabd6ac9a34d8d21351d57ed46636d1a50095a0787c4. 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/QZTAY2355439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7aec2265f5924a748e423f5abcd91dff0705a36fc0ebbe841e3102370eb019d. 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/QZTAY2355440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be56f8fb316156d284209e02b3d32e3eed28273f1c9af966bc151b83cf7b647. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZTAY2355443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c91658d4e719d3c594bcbfcc8d2b52741aa1906d8270eef24556466eb8fad5f. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZTAY2355444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd315b5371a7a07c52b4c5d4faa567e5060cfabe417f62cc7f1fa6a5132ba6e0. 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/QZTAY2355445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094d6086e981eedee1fa2c4ed4ccb8cde4940deba0ae26dd4ebdbf0c86001cb7. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T04:35:36Z), 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/QZTAY2355446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9a45412da9d82d455baf79e8fc0516aa141cc73a289ff6c8dc2a351ba2f7d2. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZTAY2355447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788aac7f4b7801615af5b3119864e33bf9f1b90d4116df301ce75dbfb326e545. 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/QZTAY2355448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd520880558995391d789cd9e75bf66b9fdda91818221ad86258ac13f44c0968d. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/QZTAY2355450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58db2b2ab77b5c1a7d82d22525c3106024ff30fd285965d1108bbabb6382f75b. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/QZTAY2355451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ecc488b181262fe2a23a674b3846092e2405613b1cc6443b37d91a6014db2a6. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T22:36:15Z), 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/QZTAY2355454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeacc42f36cad53be8fd73a8becef6ef0ee86d49d6baa2776e8461c7e620e2758. 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/QZTAY2355456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c78db27720c038bf38678a41b3fb296388a5631c65c21ef5ca4f086b6834f4. 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/QZTAY2355457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e784fe54317c3ad0a19a92e644d252cad6b982221a9e30a02d62e05016cd0b. 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/QZTAY2355458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b9af0dfcb051ff69c9b67bfe34ad283c6f3962060a01d670637bf1e7da6155. 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/QZTAY2355459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0383e6ce3f570204b4cef7db6c7e4c7cc5824636f916bd04955c563d34ab02a8. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZTAY2355461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c214ffffcea2961447ca2f8ba3208ca7951e0a09868e6828ea24762e892d78. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T04:35:01Z), 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/QZFYY2467993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6a4d9a38cd9459468e90a0f63ded56a6b13042e2b009a2ea25c2f7e492b8c9. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:02:35Z), 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/QZHNC2493806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf86cd22d2830a11bd7fa1d0b12123e0179c6e020af49be9a42d68aa1f3c61b. 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/QZFZ42553534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6709134de5604c31b4d43174f93d3c6ef1e60d8622abfc3ba5fbcd6ae3cb4405. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/QZHN32537519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2f531362daf7967377689aae6541e2bb34804a813e693aafae5ff37832d2bb. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/QZHN72531802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38414c50fcd48a1dc982b175ea2fccb50a26246fad8cd6965457e6f35d5f8ccd. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:53:31Z), 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/QZZ7W2561012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7f61b8aceb59d296ec14f0156fe746a8c460bb3bf789244d0e4214c9f81eef. 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/QT3EZ2505835.