John Lester Nash Jr. (August 19, 1940October 6, 2020) was an American singer and songwriter, best known in the United States for his 1972 hit "I Can See Clearly Now". Primarily a reggae and pop singer
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 0x9dcd5558b29f4cb665e204b24b088ad93d885f7aff2d06646a7eef01f7c38052. 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/c4b5e587-2edc-436d-8908-c31999c5d0f1.json and https://artists.proofprofile.net/proofs/artist/c4b5e587-2edc-436d-8908-c31999c5d0f1.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 0x9d1b226988aca3703a6e6e6cf5d24e70acbd30d403bebb6d061459e22737f43c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBBBN7200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8df7dd4476f85d3d2a2be356c2423c5c883e424bd3423419f5ab4c90f4493a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBBBN7400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba16d966756c8d967f53a443c93e37061b93a7b921893a045c8d55a8cd8e370. 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/GBBBN9999943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25baddb54a50b71103856be31f99afa66cf31a15ad6a12cd7cfc51eb176adfa5. 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/GBBBN9999947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25baddb54a50b71103856be31f99afa66cf31a15ad6a12cd7cfc51eb176adfa5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBBBN9999947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1b226988aca3703a6e6e6cf5d24e70acbd30d403bebb6d061459e22737f43c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBBBN7200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6529e7c61103cc29f3498cfd0c840e576449bad2b0b83e9e059dc5882a82c0. 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/GBBBN7500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25baddb54a50b71103856be31f99afa66cf31a15ad6a12cd7cfc51eb176adfa5. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/GBBBN9999947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a467b1d9c17316736e03f234783e6a1e299849ee921c14f617283b4c31108b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBBBN7400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ba9c66a92d4bb7509536f32649849026fc5086670c0703838cf9a718e88d33. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GBBBN7502003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5a4bf3f9ae18c86c5dc8ffe09f502f39ff952d053bb471c3288aaee8363013. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBBBN0009529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8df7dd4476f85d3d2a2be356c2423c5c883e424bd3423419f5ab4c90f4493a. 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/GBBBN7400008.
I Can See Clearly Now - Studio Rio Version
Studio Rio Presents: The Brazil Connection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5371e869a11c6664aa16558c2a4e385db4891cc3e5eca3cf4a179eff860facc. 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/GBARL1400504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a467b1d9c17316736e03f234783e6a1e299849ee921c14f617283b4c31108b. 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/GBBBN7400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a467b1d9c17316736e03f234783e6a1e299849ee921c14f617283b4c31108b. 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/GBBBN7400002.