Benjamin Semple Chase III (March 18, 1923 – March 6, 1998) was an American professional football guard who played one season with the Detroit Lions of the National Football League (NFL). He played col
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 0x6e760b1b6e3a07aa383c74dc9e84db92af118de46865dd865893c0e4541b8657. 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/304f4cab-13e2-420e-9935-798ac850b07c.json and https://artists.proofprofile.net/proofs/artist/304f4cab-13e2-420e-9935-798ac850b07c.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 0x2ebb73eeeb979031a0ac71a227333c313f3f2249816b608f6f2123282115d2de. 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/CAIDD1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ebb73eeeb979031a0ac71a227333c313f3f2249816b608f6f2123282115d2de. 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/CAIDD1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea3032a8ffd9d7f1dff5e15f352622c1a129c1f1ebedd18fee8838ce0e3b623. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/CAIDD2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35dc66b68043c03394845aeeb32b126a0c81a491e18182373c60f26e1ca97942. 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/CAIDD2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f79722fad62e3c48fc5c0b609b9bc026e075b132f6e741b264fec69b595328. 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/CAIDD2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6da99f1d37d1046b14449a37f3804e668a00b18a5e60db6b2cca0d9c56e07e3. Chain 2 (Bitcoin): anchored in block 957540 (2026-07-11T08:19:50Z), 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/CAIDD2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1001ae02aaa695b253164ac998248fad32ef1103a109ab390b6da4df66e76c. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/CAIDD2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc73d50266a8a1c170eb8898ce6b42a82a86a27360bf9f93a493de85ae59ddc7. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/CAIDD2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db739bde005fbbe2663ba0507e6bf22ed06e4613f500a1197183a4c5a470c08. 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/CAIDD2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ee012ec6a25ec6ebbe603086a3b235fceb1adefd75bd35a44f51e8d4df64f8. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QM6P42490857.