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 0x773123fadd3b29a6657c45907ab886418802c4b48ed33a95e9ff657147588748. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/50ec1af9-1af3-4d9b-89e5-69a973c762db.json and https://artists.proofprofile.net/proofs/artist/50ec1af9-1af3-4d9b-89e5-69a973c762db.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 0x0a576b5c6b73632ea6d1351556b5bd7c376e444a3ebbd441da7ff717842e5b7b. 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/QZHN62425027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fea83d49b1654fb550bc6f5a790eb4d0aac0acf5fafe9187d1de08569cf5e5. 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/QZHNB2401805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5eb32b8511f949d104f3cd74af0919bb524bfbbe32e70ae189dde33f3a73b7. 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/QZHN62425028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe76e3d2455d2f750e265fa1776b44d302fc9a0676dd471e4b3e5c98dce5843. 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/QZHNB2401806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5864d553d845c372a0b5fb4bf5dcaa7ac228c011d87eeb51ff805d0345a67b. 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/QZHN62425030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2765233cd27146f71c48438d26e3dc5f3fc9bb2c0a2e90f3d2b29cd6567e6abb. 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/QZPLR2454864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f450f287280f40e12674b3633e415d5e175bedbab05246de91623e9ab55a1df. 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/QZPLR2454866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06258428cc2fdbe10e515bfa228d224c1b486aa3099a8d0cf9ca8c130499e2d4. 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/QZFZ32432083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc505d05ff57574141add8983167df946663c2f87fcb951b5d4ae4fe7b9a0277. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZWFP2309151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc132c961d8aa82465d2ea22cc30cc5bee48ea1432d0f666741b46b0889ed8daf. 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/QZWFF2339493.