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 0x44fae00b791f39ca3db224d662e552d37d4ce44a2d4e79e02f2ad73365892c87. 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/60d3488b-6a77-41b0-853e-0225cf2b5796.json and https://artists.proofprofile.net/proofs/artist/60d3488b-6a77-41b0-853e-0225cf2b5796.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 0x79a471bd771cebe795dc796531388da49b785e194725e4350dd75ab483f341e6. 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/QZFZ42417354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4830e2c0c7ecae3889e55b137859543577b6e4d04c6275c9c24260e6238f05. 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/QZFZ42417355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6ebd90b5b154465991d9c30185b402413719126a61ec418dc517648d1a7534. 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/QZFZ42417356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfdd0ddc58f8a05b59f0533b178b03c5513cc0ca99f8ca4d0851b410b4809a4e. 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/QZFZ42417357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b78723506fb94fdbe1234d3c205f4a5780251b8c975dce19c7bb3ded6dd2c5. 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/QZFZ42417358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c417401b90f6b918ccbd3e95df1ecc138759abb993582cfa2a0f26625d4d66. 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/QZFZ42417359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271aa192e2186ea27582148daddceee3dd75e659775c9fbb2d35a78b3ecfd102. 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/QZFZ42417360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380c595916db56ac41bdfd5e611e3ecd56bd5694317c44fa24773d39dd5b338c. 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/QZFZ42417361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2646f0daab44313cf929809af4e353ae3ddba9f70476783b58b044d269dfd80f. 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/QZFZ42417362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3912db5f032c0d63663ec5ad3a75fc3ead64843dbbca3e1b5b002842d4564df4. 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/QZTB92310615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0645dbedce5f9587cd4f7a7ddcf9b1a867d85de2ee501eb17ec704e882d2b5ea. 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/GBLV62204862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3324047a177e2ee22f8a44878f03f5f7a4625f6105715f86c15a9dfe258b4e5. 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/NLFL72400453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b594b246ca4a7588b451776fee9d37a2316a88cc82efdeaa351257a2ee8a806. 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/NLFL72400455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e30a3947310e31f5df75942754489d7b0386dc5d395a9fe364decc1ecfbe06. 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/NLFL72101233.