Roy Charles Hammond (August 3, 1939 – September 16, 2020), better known as Roy C or Roy "C", was an American southern soul singer, songwriter and record executive, best known for his 1965 hit, "Shotgu
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 0x942d16d356e76aacffe4f83d24c18bdc9be2707cf792cd92e65879d4085bf21a. 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/c1df497f-5f57-474c-afa9-60e9ae66d741.json and https://artists.proofprofile.net/proofs/artist/c1df497f-5f57-474c-afa9-60e9ae66d741.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 0x56e647beba928027e842f95413c26f4031eb17517fc4516be179293c9435c9a3. 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/USHM81127242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1392de9f1eab4b0e142eb7301426981008466663594fbad74f1e199592cb2c7d. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/USHM81127246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d34a820b6b5f2c3c1d0b2aa7d8e17bf7267c8dc89489c71d21f00071a1259b2. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/USHM81126996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc349a5ffa67734916571cff51dbb8f337595dc4f86f8a4b52acdff92216a5798. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/USHM81126299.
I Want to Be Where You Are All Night Long
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f69383082d630980b3cd9befb84ac7141cfc395fb66803c9aa58313a46c18b. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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/USHM81126308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc5587022ce2ced52de64ac4b36bc6ee684bf306520c200f5b1d273a239f265. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/USHM81126310.
Medley- If I Could Love You Forever- I Stand Accused
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ef8354b6924a16053f7d081e55c69b65d32f138da9c2dc355ff1cfacf7d683. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USHM81126311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d570340f294f7adc1ea99b70463fb222343d44a90fe3ce2bbfe2b57f75b7ba. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USHM81126312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96cc3a38844585eddf1bc28221fb539a2e3634006e87329d0f1480701ecea8b. 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/USHM81126988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e24ed4868a0a89e8100f7a203b2fe27e90bfe97feb3f4f2e8d66462b9195d4. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/USHM81126992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b565f41989454237a4492bde65d3e0312c86a1ad21de0c31af873e60a0d9fd3. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USHM81128031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746251b05742493966c6dd24a2bdf74672dba39d11dbbbe02a1728ece8dfa6e8. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/USA2P2034833.