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 0x295928d9c7c9a0541cd5728edbfaa0d4bd329fba4dbb02f39354aa7e8669100c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/23eada29-60c5-4c7b-a9fe-ab426a6fd109.json and https://artists.proofprofile.net/proofs/artist/23eada29-60c5-4c7b-a9fe-ab426a6fd109.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 0x0eb6fb05e39246da0b4e9351aaf759bf849d410b137dd6836ca0d685f4c4d057. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:34:09Z), 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/QMXQJ1306403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0682303b36bd50b2d3865e9d95230a0260e660915620c00164b16d877fbac5fe. 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/QMXQJ1306404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7425e6cdbf93d2568085c110a75b0d1207a912098353fcd849096995cb1697. 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/QMXQJ1306407.
I Don't Wanna See What's Happening Outside
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3a9673011acb81fb4da355a93c5fc2a0618056eb84a3d130967ee0c64cc634. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/USSUB1613503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9d19d8c5506ae2930b2a78c064bd3ea4af5c02a3b1283a9b871c0ae92bcdc5. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:17:38Z), 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/USSUB1613504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6829d7d7014b1544a103bcd53544eca8bf1baaec1d57786be54500aef9daddc2. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USSUB1613505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20b5198e633f77816133bf5485b8d4da75e7e3cf1e4407775c797d303322dd4. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:54:33Z), 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/USSUB1613506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c4783582ce85db3d4c1309561909f4f75ee95a20140cfe382ce52fef846df5. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/USSUB1613507.