thumb|Illustration of the Devil on Codex Gigas, early thirteenth century Satan, also known as the Devil, is an entity in Abrahamic religions who entices humans into sin or falsehood. In Judaism, Satan
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7474fba305716455b0e5d449b36c09eddc205b2febf5dc0c7de60e7dbadbd3c. 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/dde0e602-d9ae-40ab-bb92-de0ff4e3e2cb.json and https://artists.proofprofile.net/proofs/artist/dde0e602-d9ae-40ab-bb92-de0ff4e3e2cb.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3caf2663261a074d1275a0f577af51c98e20d1a543d261a0a60497fab07416a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/NLA321500152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4bb7cea22b81ae1d061ad37a7287f092ba1834b3220937bc9a4a9771afb6ff. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/NLA321500155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5253c03cc5482f91610f08e80db8369dbb9e86ad9057fd26e7485d151329b779. 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/NLA321500156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e723aad32203205e3277ebfff259e69ee59f8789484a32494f59cadb822a954. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/NLA321500158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4268a95161e53d379b14b422d8ebe7c123ccbf599bce5b928bfe696f69b001a8. 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/NLA321500159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0b7814511cdb82836f9cff820dd179c0a6d2385e685bba7129c47b8d45561a. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/NLA321500160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7bbe76a5ba57051d0cf7ef73fea2890a962f72ffcf2cfad213fc2a27f3ae8e9. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/NLA321500161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe433682dd3e69fd6b873241594919a04ee3d6c0278f8acfba0131a2cd849189a. 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/QM4TW2218475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66594de211c257bbb80819b677c23eea3fbf7f732748434331a7e4cdfe6f7e2. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/QM4TW2218476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a0725b4ae91793e321129b79c03b6fff7b1a3293a27840feb4e4a24d87efab. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/FR1PP1300160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09671e604cf54c8f395d1fd1f71892d1a243ab3eb6d67f0e1faed8410089cded. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/FR1PP1300180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c066668a2a59716126d4588c16e523704ea23d09b610dba5a3e242053918a66. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR1PP1300190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8b9596ac7a5580065086dde8d986ca266eff0c77fa55364489ee8355370b75. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/FR1PP1300200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47f9a0066209add963e05304529fa75c840a5473872198c868a97b5c1f24b58. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FR1PP1300220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86119cbe82b6ac8ff2b11dedf62d240971ec5b8a9e1a2b331aac2c79a9495ab. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USMBR1812941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d8683a9c0057beb6edc7dd35ff78481303e3d8c2a4a26bae63dd24a02fce1c. 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/USMBR1812942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6723aab661c08182582f06c0062364e3d36e7499bc13df2451d414580458ff5. 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/USMBR1812943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff6da7d7e9e5651f35f86bb332ef818ae8827986737f59077414a1f2dde613d. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-21T22:56:27Z), 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/USMBR1812945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba2677a83bc2a3e1006f7c6964f9ec0e0df6190b0a691d4099996371f2608c0. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/FR1PP2000220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620f25d15bc00c0abb34e2639db31f0e1f66e3634e22fa993355214896cfdbc9. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/FR1PP2000230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7c0e7efbf002d310d2db6ed69c7069456f393ed638d87da16e72b912eecece. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/FR1PP2000240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14cd7aa7b087742feaaca03c6e2fd74d489a38060f9ce57c3d9e297a0bb59ce2. Chain 2 (Bitcoin): anchored in block 957695 (2026-07-12T11:16:12Z), 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/FR1PP2000320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f8eb0a887f9f1b6c8f15d1328c2eed354497e9365bcda1fe72a37ed6c9c537. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/USMBR2215298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b8673dbafe7c2aad2685233522ec7633afe5816594a36912b82b6940aba3ef. 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/USMBR2416478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03aa8d2f754723c9b8538cf3dafc7084a0861f30dc3a8d4cb29f02fc22e38928. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/USMBR2416479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4c3c934c2d648ffc37a95b2b32ad2e0c02a25612b8c897356c94e56a401e10. 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/USMBR2416480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5ddb7d7fee6b22ab92b91abedb2369909e463b82831da2e91a680f1b54c71c. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/USMBR2416481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594250442f680d24a21abb974a0dd62535424232f5c34fedcd404230f6b1cd2d. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/USMBR2416482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a7ed137900dd8d677d78fe6269a87192f1ba89a494386739b0ebdf4ba3d918. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USMBR2416483.