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 0x31ebc6cd9f76f98666b179ab1b606d2183ee9a0c4a5da92416878465e338cc2d. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e8f2d59b-93ba-4e54-a026-0816ee705dd1.json and https://artists.proofprofile.net/proofs/artist/e8f2d59b-93ba-4e54-a026-0816ee705dd1.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 0x852fac28f8ed8718c5bc1c41ebe063883f7edf10f69b18b7037080fe5032af01. 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/QZTB82273435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd0e4f14ae6f1a3107ce63445b77c82f3a1181616117e34ebd23f703d305046. 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/QZTB82273436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8ddde10a226a4f2906aec65796184d5a603ef7e9f6adb658d3f8118f77a338. Chain 2 (Bitcoin): anchored in block 957287 (2026-07-09T09:48:29Z), 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/QZTB82273442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c722b0874026f8e583285da04672a981a43b0b4c1eaee4fdf6b4854b9375f31. 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/QZTB82298809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2416f82218dc8cd45cd1ced94fd8edc3022cd826cd2b5b9daee12b6842ed6f. 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/QZTB82298812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03db808dc805ff71334d53d47f3bf5055b6b4d4796a34353eade0acf35fbea39. 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/QZTB82298813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4bee2626842e499e92ca8422bf1a4ab6da4dd6913df07f3e99dc29af04174d. 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/QZTB82298814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e416f72e19e3cd7dbc343de5b857169a13cca61ae3447063f28d00c0ebebb2. 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/QZTB82298816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0180a96894315709c55b5d8b7c8818dfb796d721c053ecc523062a3cdea90aee. 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/QZTB82298819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe814de299c16e7270f2448ae460c8bf99c8694f310eb2cd52c951c9c950a5afb. 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/QZTB82298822.