David Carson may refer to: David Carson (graphic designer) (born 1955), American graphic designer David Carson (director), British television director David Carson (climatologist), British climatolog
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 0xc859e3855ce1766b9f701be51bb445e339ee9736de85138c3701c586cbeb031f. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/61b0cf39-8f6a-4cf7-b24f-27aae662f337.json and https://artists.proofprofile.net/proofs/artist/61b0cf39-8f6a-4cf7-b24f-27aae662f337.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 0x9337491dd9626fbe832b200c0543f745758aee3bec3fee833878bf94e01b26fe. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/CH6541730104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31accca335fcc8fd6524ac11791ded445eb6488790482db1fe5db612fc526039. 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/CH6541803045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7548fb42a90ad1260ee4a67cbb340ce64686d26062d14ad9b8eda9c9383861ae. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/CH6541830398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e1e049d8c3587548a18e936d27455c15d58b0cea0c39512aa97c24aa88597e. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/CH6541848826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb641584e7ca647c494e536ceb117ce79987bad5217c405257c4b8c53200a8e. 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/CH6541865623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38f39bf8216f81cef2e947e30cb4e8af65b4356e33227d11aa39bace486ed05. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/CH6541878925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfedcf9112740a0858943fbdedc0691d8c120edc247d320c74745e65603504c4e. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/CH6541909453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4126c11a84b1f0f6c03c480747e94d2e8697226e41b374bff39cf58794b84c28. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/CH6541931394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00505660ee2fbd6d6e2f46715898820d327b2022ee54da21a0620e5883418b7e. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/CH6541991853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5555e6584bcc3c272ef9c1e3e9b022374707071676a06468e01f0b74db7fdae. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/CH6541949522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d30c5bdd208d25991f48e7195e7fa9ac89349d5327833ae41b1b02d902e8d4. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/FR9W11931135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0dd29b47240dd6f784e1c5fcec2ecc598aa60faa07d2007a40327e0d253647. 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/FR9W12014410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74168d6d4df8f1524c59ac8d93daeb2250893cd8ebf2eaa9ebe433908ab1a3dc. 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/FR9W12117035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c342fe2dda3b0f3c63e9aff334da1efa9a003572439cfb00da2d2f3380981a2. 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/FR9W12200160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba53ad04c54b9d094703a2b91cd1756f180a05dccd67273e8994fea9002cc88. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/FR9W12244835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd071072af862bce00f646e837d54c8540e778354b6644c813cc2cbeb354c66cd. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/FR9W12351419.