1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x7ee0104946fbbb43c113c2442164bad027e2090f0129c33793b8b5a86c5a77d2. 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/204763c9-9c52-43a8-a717-89e1644dbb66.json and https://artists.proofprofile.net/proofs/artist/204763c9-9c52-43a8-a717-89e1644dbb66.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 → block OTSBitcoinBlock must exist at that height 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 0x8281872b692c0941f0ed3c3e193ce55ae4b255d43ef525527d78ca7b83d46685. 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/QZK6H2062306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ecd5e57fac59ea8b171dde6dca59f39ec11abadf97a2bbc9c2529c2bac4913b. 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/QZK6H2089149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5fc49ea93edb7f43887f43b66850c9ff5656d574ead09ac2ebdf40143d350b8. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:38:18Z), 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/QZK6G2021882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5cb4a630106f237bad3449ac6c6fd31052b197873c28ab6f000e7f6c889612. 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/QZFZ32164261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3f4eb4e0ad9c407d8a2314670fde67f6e33caeecb498f9e878eb1095f6c3c1. 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/QZK6P2121526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2992e74869e518842bd70814e6fe1e6627c66920d10d1f8e3cdb7611f0d12f56. 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/QZMEP2165171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0088367aa0659146257c5ee5d8b5d969c6825879a504953169d169f32cb7fabb. 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/QZHN32225330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c5ca95f7320442308890f6d8692740fbc01784ece68c951054bf106c56dc20. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/QZHN92214640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5bca0cd4098cb2a5a386e5e14ad68bab30220c478cd06bf8868caec1384f98a. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZHNC2228512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e86a128e9fc3eadd14240ed20712aa8693d24e84f2edda984759e6f8273087. 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/PLI362593470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5c864631a96028b64950e93912b6efc4cc4761e21a2384a15ccc2861895a8a. 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/PLI362515160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749ec81b1882cb42be0e874c0a9802d8d6a63d7605b311c9565d5e792f24b825. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZHNB2368579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df556c5df1724566a01e6db26af3d067b2b8af4f3ff6b17b20c848ca61f8696. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/PLI365242340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846c945ec844f27a817a79359cc8585591e4c0d926eb243fd01ff3ac16e0c6a4. 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/PLI367554840.