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 0x3e5aeadb7576c8990e4f38eae8c905713399bc3e8aaba332fa0573a524bee062. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/385bd311-5a8e-4add-9749-37ba40d96f8d.json and https://artists.proofprofile.net/proofs/artist/385bd311-5a8e-4add-9749-37ba40d96f8d.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 0x44de8a8e02c50422651a19e460ffcf22dc64c69dcb8ae2577d8735a3d640f0ad. 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/ING212342418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc014521bbb407d7c92a9a97dc1e2f1b7581024227ab1e0b2badda5d27920bc60. 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/ING212454800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca4338b11a962548472d027d28a42361fa7be4469b50ee2f0e44c6ebe8c5ddb. 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/ING212454794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f54559e00d8124335689b5f9a4afbb8d5f37f620179bb6c614a7e3d4b08dd2. 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/ING212315429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb175eddfb9de9c370149c2e3e4cb9e903be72e116cbd8d44c48cff9b00b1a1b7. 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/ING212342414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddbd74d5e6d1e3e98884b853debc42fb75e84c56360cadaa70d023cb493baf1b. 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/AEA141801827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84bb869b7a0b9318d0a7eb772f0f49b4c42d37e16744ba6b3444233d3fdccf3c. 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/AEA141801826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860cfb3915f18f7d3dfa0a63d3beb5e6c432d309ff67f61f5b3b881a08bde337. 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/AEA141801825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6f12921f3f1a4e1ecaf92d462d8e2974d257d0029cdb2bb87c94874af1fca8. 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/AEA141801824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ec4ab0409b644a4b3c25562862ee344216b0cadc5f692125a20c3e9711b072. 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/AEA141801822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27ea3ca5c130b4888aade52463314f41f3b57d85cafdf31c32ecc3136f3c305. 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/AEA141801975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b3f505d1b50df584e77652a47ba46e296a83d975eab64897e31bfc1dbb6c2e. 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/AEA141801977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956abccf319acbbcf5961b34553c3f321b4db11c8b63184201bac517e116a6d6. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/AEA141801978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f489707c512f1937981706bb629c8bc0792dc4eb8ba18b1b1b51c4c49f5ad5a. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/AEA141801979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6619e56bf9706c4ec628ccee9a99aa5f33a53c4e3cddc80557e2c147ddd5eb1f. 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/AEA141801980.