Harry Carpenter "Junior" Sisk Jr. is an American guitarist and vocalist in the bluegrass tradition, best known for his work with his band Rambler's Choice. He cites the hard-driving bluegrass of the
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 0x8ca0ebafb2ca97a764845ed6bb47d0559a99522225ef2007b9659ed233704019. 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/5f2b0ee5-276e-48ee-a65b-b5d3af097162.json and https://artists.proofprofile.net/proofs/artist/5f2b0ee5-276e-48ee-a65b-b5d3af097162.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 0xc2137190537ae3a2595460ff7e1fed7dbcae01ecdbfabe9927c514e6771f5f7d. 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/US37G0882506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e05d8d2b3d481f9b42b54514130ff02df6132cc3931c5919b5ea48ea3da965. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/US37G0882507.
The Story of the Day That I Died - single
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb899bb98fd6f1408a3d1094fe03cfe493a8adc39519c0c5a0e326962e573e682. 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/US37G1285101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76937ceda444b4ea413a6162881cd3bd3c8824d2b7f0824c1ee35dc53dddd2f. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T13:04:09Z), 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/US37G1285102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15e63a5f4692bce638537a9c334d065af61640b3afa08a81325e2888eb8cb19. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/US37G1485702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2700d9dfe7a6659ab8f33ac5893090f832e27e0658d86c6cbe031f9022e3c9. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USMTG1605102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0e58d0be4348627d62dadd46a8b4bd6fc2d99044bebb585e6e2a25a9411675. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/USMTG1605107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb840e8f6fcdec90d0e72f14c690fe57920404882ca664ed4b65ab2c7bf7fb511. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/USMTG1703207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa54a24b97bc52c7987c9161c951f58c7b4897613d4255c389bd38d9a81d5235. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/USMTG1703208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53f0287b63b8baaeddb83dee5e6336f43588d2f1f713fe4980a9f3150780cdd. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/USMTG1806101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4960c631b3073f419363430380c65846a16f4e80f095420026a0e3ecb7ed8144. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/USMTG2002141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2c27344e2a90c523222d9b6f4fffcd8d91700e89e371915524db5599456718. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/USMTG1910801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce5bb083f28a7a81ad381e9ffc1ca3cbf77043aa8e4ca827c1f8b252edf5a3e. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/USMTG2002146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71801cf8d626acf9d0443fe92ac37e21c40f570cdfee03bb5c8ba26c5837ce2a. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/USMTG2107101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260fc82ad030524a209bca92232a8b13e8e78d52ea9f48ebe98950b6f58073f5. Chain 2 (Bitcoin): anchored in block 957868 (2026-07-13T14:56:55Z), 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/USMTG2107103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf008504db3b72d88b0a054d80b3f985c9cf6d08aca3a0f90eb6e5b302033bc5. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USMTG2107104.
Long Hard Road (The Share Cropper's Dream)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3816cf81088a35545c6a9dc871c379ece50cbfa34e4f01b8a1519d28eb4106f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USMTG2310108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5968c51066961e2697bec615365ee814a14c46cdc73129e92cbddf42dc0a9e7a. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/USMTG2310104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3816cf81088a35545c6a9dc871c379ece50cbfa34e4f01b8a1519d28eb4106f. 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/USMTG2310108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf08ca48ea91ee789be409e5fb1af6d204ed3a669f4d5faf9f33f7435e910df. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/USMTG2310106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c6e35716a758a4e59ade1893260d5736ad7b66d016877f9ccdcf0301f5cf8b. 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/USMTG2310101.
It's All Fun And Games ('Til Someone Gets Hurt)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350476e1eced0d1d78c1809c989054960f93f3e677f127b6f04209d70a634272. 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/USPR90600801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd135c704e830af3de10581fe01916a09c281cc6a9e8100da2b4d371fa53fa24c. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USPR90600820.