DES or Des may refer to: Computing Data Encryption Standard, a block cipher that is no longer secure for today's standards DirectShow Editing Services, an Application Programming Interface Discret
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 0x86b672542b5a2d67d6302515b84a687fb13f654a0a9d922d70338494e8f47a24. Chain 2 (Bitcoin): anchored in block 953759 (2026-06-15T08:04:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b7889283-2b1a-44b0-8e5b-ace4fe762d41.json and https://artists.proofprofile.net/proofs/artist/b7889283-2b1a-44b0-8e5b-ace4fe762d41.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 0x861b78bd371ad5ec1363e5c080ce5f39f761c98dff5bdf2bce68f48bdd3cadcd. 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/CH7812404006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8a940387d13d5cc2f90e167929e2b525ac6c59f54b81c28c242137476d0483. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR8GV2402970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58cf5ceaf63e3b141fcc7e15cf2dfe479d87079e641bbe34568025b375931ca1. 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/DEXJ51800120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fbe294bdef74e63655d8ef61c03ffbe23cd44f57d84a6e18ec20d238e1115ed. Chain 2 (Bitcoin): anchored in block 960285 (2026-07-30T17:26:40Z), 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/DEXJ51800186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259f2645480dc219861c9283cb05363752698686fd3c6fa42101acbde6d70549. 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/DEXJ51800168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58cf5ceaf63e3b141fcc7e15cf2dfe479d87079e641bbe34568025b375931ca1. 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/DEXJ51800120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb7619b2142d79f34235eac7ecc1bbbc1033c70aa081e483458dd9deb48d6fc. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/DEXJ51800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037322728a85c4145138c4ee826fc6418dbc2375f86e4f6daba93cd9f96f48e5. 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/DEXJ51800153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1ca7c21ae4ff977ba3b84eb66d89426cc0e510ef849c330e43d1682675df51. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/DEXJ51800028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb7619b2142d79f34235eac7ecc1bbbc1033c70aa081e483458dd9deb48d6fc. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/DEXJ51800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe52e6b12fc6064ab81533cf19de426843fe0a6a86cc5e8ec38813a82a5a2e58. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DEXJ51800172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f03d4433c67208e6cb9a1b0b05919a80ca444ed5e9ec3ab3ddfa03ac6406058. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEXJ51800176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259f2645480dc219861c9283cb05363752698686fd3c6fa42101acbde6d70549. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEXJ51800168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262276027f68a0bf10102cce5e0091fa84d3db238c74e1297b7b3657d05856d4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEXJ51800181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb479776d812e489f693b8bc2f6e7eb2a7fbbfcef8f26fcf9239500a3c9bc69. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/DEXJ51800182.