Hidden Empire is a 2009 science fiction novel by American writer Orson Scott Card. It is the second book (out of two) in the Empire duet. See also Empire Shadow Complex List of works by Orson Scott C
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 0x5626b86493149e85896958560e6c1a0c9b6c6502545529f00e506190a277c02a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/28deb1d0-4380-4913-b918-fdc3c31ae2bd.json and https://artists.proofprofile.net/proofs/artist/28deb1d0-4380-4913-b918-fdc3c31ae2bd.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 0xdec8bad8a3f8768fc1a537560d851d9f5722dfda2ca44ca26b99510340ecd344. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEXO12053958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa609c5b82beab741da149d16904ac9f794bb6d013bfbad5ce01d8e0f744c63ff. 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/DEXO12053959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x074f17a38705a98af41c01dc40e3eace561a926d67f7aeb044ad6c7f60eedec4. 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/DEVU51780366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9eeebb1baa396b55359691933a7ad43a05243f6194b95a7365eb2b004d6989. 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/DEVU51780367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120f1344e82a9e7c3da4d261080a7dea53f27e5ffa4eaa7e30761674f25060f0. 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/DEVU51701156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4543f149b3fffb6d93a52780bfaed7db29c4347d9279d2751a16d695d17508cd. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEUE12333334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bafee881c4242bd6292a866245801bf976f9c20968ba7043159794eab4a7681. 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/DEUE12333320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59761de2777d0697efa73a0986bdbd15e5b617e590c2ea6a312ca6282362f0c. 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/FRX452108748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec8bad8a3f8768fc1a537560d851d9f5722dfda2ca44ca26b99510340ecd344. 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/DEXO12053958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ae7ed73b414d189e1502cb5f44dc03436c5989fe4b993cdcfc0f20ef8f2240. 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/DEXO81980877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea6aa889f44aace8f64730d67ce96327d779c4f60741eb5bd42f7934ff2f21c. 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/DEXO81980878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81198f5e1caa2eeefae721b79633c6e7ebe953246689cebbb69a3a76e29c3810. 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/GBKQU1983327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x074f17a38705a98af41c01dc40e3eace561a926d67f7aeb044ad6c7f60eedec4. 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/DEVU51780366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120f1344e82a9e7c3da4d261080a7dea53f27e5ffa4eaa7e30761674f25060f0. 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/DEVU51701156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2659b85f3a4deecb62ccbf0738bc44d9b810e4a8ef3d2d02436019c5f65b9bd0. 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/ES84B1710125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa516b830d20a66640ab0162db208affbd96d4cc4d94cde3b9fc3f77d35d5af04. 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/DEUE11740612.