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 0x3ecccffeffc85ff4f905548607c3b23efe3323a2be79b3e16d7c47ef6a410200. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27049f57-fca8-4cf1-8a32-bbd0187ba7aa.json and https://artists.proofprofile.net/proofs/artist/27049f57-fca8-4cf1-8a32-bbd0187ba7aa.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 0xcab7020c302732550b5df20bf05c11e769e5323ee0a43b7a08decbd6d6befeca. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/AU3O01902536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd17cb6507c7a68b70365cb60a07dc07605a01066b0b0f4f7b97e50b31704999. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/AU3O01902539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6fb7115095464d351c12291f07f6962df3e4dd47e4ffbc79599a371e6b655b. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:59:41Z), 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/AU3O01902554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2947a6bb8e8d28f659a8a995a4b0a9cdbe0574f80f3180d1cdd9205516061cf4. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:03:58Z), 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/AU3O01902555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758e67d9ae900233fb47fd88ab5f1c2631fc127deb6d13aea91b30369edb76fc. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/AU3O01902557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a84530144fc473fd2e0671d1282ac99199b80a28ccee3854e45c4faa8bf715. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/AU3O01902558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffcea668a5c5aec5411183cc2346d962c9592539741c7bc2b4490295373d09be. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/AU3O01902560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da1ed9b9022b345b057094254f8038cc2fbc6b152531b54184ab5f1859acc58. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/AU3O01902561.
Concerto (Live At Adelaide Guitar Festival)