Theodore Roosevelt "Hound Dog" Taylor (April 12, 1915 – December 17, 1975) was an American Chicago blues guitarist and singer. Life and career Taylor was born in Natchez, Mississippi, in 1915, though
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 0xfecbd040a587bb1934f80036ef4ca71593c0101c167f5149500387ea22535caa. 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/14363461-b1b4-404b-94e3-1fe66c6923c8.json and https://artists.proofprofile.net/proofs/artist/14363461-b1b4-404b-94e3-1fe66c6923c8.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 0x65f3c57a70fcf91a72a0294878d921bf229b76e07d7813c1a65a15d6912a1a29. 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/USARL8272701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4245fa95ffb263acc700f92be93e3bface52739ba1082471c46fe2378305ab5. 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/USARL8272702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdbaf496a8a1f8ec311d829b490b11eca7865f71efabf3edb3d815d83fc1596e. 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/USARL8272703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ceabd1d1d08cceed6a060bd079faac080e23264472ad07dc05f9122fa82dfcb. 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/USARL8272704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796eebfe205ce766413ee2fe50335c282645342e151f4447e37be2b24a66295d. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:19:59Z), 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/USARL8272705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3d745a12f8cf990bda1fab632406f3a784b8abb5c507f1a8008325b692a6ef. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USARL8272707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafaac2d0bc3d93ca92b831f0ca1e3eaf9bc724119875c43f82bf468f9d621210. 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/USARL8272708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0c0120caeed54f8d52e397c5f8cb755d2e7dd67b53769d422d470a7e4d8a15. 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/USARL8272709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2207027b27592c6e3f84ccae87bd7d9fd495e2da6a479496b0485c9108568d6f. 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/USARL8272710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa950baecf2b7019579594c1a64c39eac4d34ed6c0a463abb7c42753bcd071595. 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/USARL7670701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8144ff8c00bf37f2eb880712514b08a1c3cff96b7383ce2aa060ea3245a14dc. 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/USARL7670702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea53550929a4b1bc27c54b9163ae505125cf799e5c1ec08b6a28dbc100583e4. 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/USARL7670703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d98e99094dd052573be7ab54b5219fd256014c8d5380ac1d7367e1ab2e37aab. 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/USARL7670704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae725d87605aeed02d9ca86624e768a9dcde7ca673f5d52e9ce4f891eebca80. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USARL7670706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da91399307a7ecf155b4d6cbf9b51975721ef7e7181309a4e79a1c198ca208a. 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/USARL7670707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4917f420cc2d87c11f78c037dc77db01406ad230456f34f49c977be05f3ce359. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USARL7470401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8577c29ea3eca5e08fdcfac202afc0c999838f62238b691c4149140dd9123f76. 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/USARL7470402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e3ab4cd4c9ff345e29b86d3ab3e58652880c3c0cb68fbcddbf10871fe49f47. 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/USARL7470403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7893d8800d2c25346a2833fd58ee0f58a456ed5553b671f260feb9f4171a7c0d. 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/USARL7470404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0adcf6230d5d3432288637dafefdc8632e8b2304ed1d274d8dfa34fa20a2c493. 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/USARL7470405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289952a84fe13c402aed0e77c89055c38be604adc092845241416b5d4c01b176. 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/USARL7470406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19d346eef6d96ab9ccb19d0521f3ecf4596c63f67af73c6086c218b566a5b31. 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/USARL7470408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8857597baa0bebfeff6dc10eeaf923ba0e628a1892972b30edf041fa17774e8e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USARL7470409.