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 0xaf62d4d935760be005d3b8c6daac6b3f71a70d6183fc1b77795935aebce924c3. 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/683458d0-2102-4843-8f6f-ed2f09e06c0b.json and https://artists.proofprofile.net/proofs/artist/683458d0-2102-4843-8f6f-ed2f09e06c0b.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 0xa53971bf0f13de454d900e7727479b60449f1ab03edf47dbdb9b6dc7abb3bb7b. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:40:37Z), 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/SE6UU2400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0efd1f0826b8510b5f0814bd6c3c40f810c989e52dfdf9bf9a368889921b1bc0. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/SE6UU2400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416ac028f7d4d081feeff007dba6fbfadb5718a4760f1d0991ad5e2e9398de0a. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:04:23Z), 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/SE6UU2400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbaeafa4b50d9719b828975dd233bcb2bec60f58af6e4da1b2a68a32a55eb879. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SE6UU2400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07fb7be8e4650180286b8110fd844cddbeefa03399443b377d030a6adbc99d62. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SE6UU2400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7100705d5bb4bab0f01a46687563745c8572f02cedd0f3068698ec07d3fd2dba. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:32:01Z), 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/SGB502509639.
Nordic Flora Series, Pt. 6: Outlaw Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1fc56d5ffaa429f94dbfa5ddd513b1c298a4ad4b25f14ae969ddfecf8a0f1f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE5AJ2202166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3260ca6fa7da57ba40382fc418c1552872482c0045354f430a9a04dcc107881. 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/SE5AJ2202163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1fc56d5ffaa429f94dbfa5ddd513b1c298a4ad4b25f14ae969ddfecf8a0f1f. 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/SE5AJ2202166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1fc56d5ffaa429f94dbfa5ddd513b1c298a4ad4b25f14ae969ddfecf8a0f1f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE5AJ2202166.