Dan Smith may refer to: Entertainment Dan Smith (artist) (20th–21st century), American illustrator Dan Smith (singer) (born 1986), British vocalist for the band Bastille Dan Smith (21st century),
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 0xe2cce4bb816130149f2dd4fcc5c3851edbcf5d9aa4a23c38071b7ca70bdcbd8c. 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/f79379bf-560f-4f27-b54b-39771945afdc.json and https://artists.proofprofile.net/proofs/artist/f79379bf-560f-4f27-b54b-39771945afdc.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 0xc3f150d0378825f881a40e449a9951a15ed9955560f8671d58c51a02750839ce. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/USE830948340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ce2794e3e32a6e922300700a20cc0748d7e98dbf4e59a8a3c4033673b78ccb. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/USE830948341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57911fff3c148b8a4f59272639caf0fc3b2dcea74f2b415a7443a72d67af678. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USE830948343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64334b1b24eca71b56c8b99eeaf7fe3cfe9bd48297e89de0f67a3f89931ce744. 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/USE830948344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7baf569739dc1b6fee8a3ea3763457adca89d184ed0c2d8cc5dc83a74ceca70. 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/USE830948345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d2b939b6ffb0747e98a1263aa9b503ff0655f0977351d17ce88c2dc6517890. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USE830948346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee08809027ec9e22eb2f94102a2bcbcbe57aa761c980dcb42155aa418e7495d6. 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/USE830948350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7f05e98b6874fa759a36673a730152d212663d407b629cf035e41e10127e5c. 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/USE830948352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910b2923bd6a6525e5d3f4fa77d33f83cc9374be7ea160320f07e0df6761e405. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USRC19807694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b5afa712eb549745b4adc64dd00f9b19baff4931e0fe797f7424b097621ed4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USRC19807695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaaea43528fdb68c3834e5853eca7d6d65f0b067e241972e647efc9d3b471a83. 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/USRC19807480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872fa5a16ab6cae6666da50594e3b3e12f19dd924bc158b515efd1e70d54d5c1. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/USRC19807479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806385be134eb7f2db4a3297e369e729f92c7e36b65ee23721052c599bc98207. 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/USRC19807697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc94c8ca2780ed1daae5f7d5389db22c90f7c62d9328187ed0e10c6a82f6b3e. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/USRC19807698.