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 0xcefb464d5d097b49c3daaa3c3c26b5a53fc3e96af793e324fdc2186681d9e8ef. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7d8ed939-c629-4dff-827a-9d2300badcff.json and https://artists.proofprofile.net/proofs/artist/7d8ed939-c629-4dff-827a-9d2300badcff.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 0x00c3b321f85802c00619dba2a92b076b8d45a04dbb7e2e9f96d6001abdbcef37. 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/QZFYZ2380459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35be76d92eae5a982c1e2e06ea73e8c48de4c8bf22201495b36c64382434f362. 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/QZPLR2144454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba210f806c3fda4067a5dcc58a079961ee93f71b43c2f9435ca7ffce9967f57. 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/QZPLR2144458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ff71b5d72cdff81455c09892b60dd0b49a1111f9bcb20bd782891d26468b5a. 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/QZPLR2144460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85874ec2517294bcd67c406ebaebeb473fcc8b6059e6cc5668ab6ce38dd2c706. 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/QZNWT2095187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3c0f1fc53c56ae93344e76ca08b36b560bfad56517aeea4e7af8f12939b7d5. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZNWT2095185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33963a8c0fe1756be8913d72c3d9cc15e39c72e4c1b0ff4d184cb5462c0d007. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DGA082385070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11e928f8263b3f76105cc53f83cff52079af5fb478456761a2d399541594c4f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZNWW2324518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd20646154b134823a77604eeec01dcefdc96869f47d523965b1fb9d57cb7bd4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNWS2342532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010270ec345131f2b9cf704cdab7ce23fbaf8620cd5a1aff2f8af0c80699cff0. 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/DEQ022371765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559fca5f80fa460153f47e72f6281212faa10adfed225b9a4ca6e1afdd0716ce. 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/DEQ022391084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f379c33620526a01e3c6c2a69b76979b9ec9d016c0dc1255d78ab4d0f17ddf. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEQ022382435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010270ec345131f2b9cf704cdab7ce23fbaf8620cd5a1aff2f8af0c80699cff0. 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/DEQ022371765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559fca5f80fa460153f47e72f6281212faa10adfed225b9a4ca6e1afdd0716ce. 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/DEQ022391084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010270ec345131f2b9cf704cdab7ce23fbaf8620cd5a1aff2f8af0c80699cff0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEQ022371765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964607879557493af021124e0b04558c2b76da6ee5136c7e6ca2eefddac41387. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZHN92383066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29fc353ed01d8f8ad6be59cdcb3e5d1bece8a9c42975f93914fb5afd4179a86. 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/QZDA72312502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb000bb85a67c50b837f1c5ce771564537feeeadde6908db1cb944817d2a608f0. 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/QZNWT2226975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefcf24c7b1ab1d949580717361fc5c924e26252d57da53c7d3af04aa70f632af. 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/QZK6M2278544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a2d1b6dd1e6ae8e633aa0ead6a1a993a1fbb6e40a00e27e523bae37ad0b9ae. 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/QZHN62230630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31dc5c844204cc4b3cb0a94dcff7a69d2a7b09ac3a108c5e36e3907632d80007. 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/QZHN72157708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f338ae2f179ff70634c75953b376bd988a782a6d68df86637d75523480e6a67. 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/QZHN32138036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c175bdf2a701141cee76f54c447fa33497204d4b53bbb322232752441e7abc1. 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/QZK6K2003343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8e18c846205a055743a8a351c67723c57680ebdcb8212b1a5bca08d3e73a66. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:53:59Z), 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/QZK6K2003345.