John Anthony David Sloman (born 26 April 1957) is a Welsh singer and musician, best known as the lead vocalist for Welsh band Lone Star during 1977/78 and classic rockers Uriah Heep from 1979 to 1981,
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019969b4735be20f5de15e3710d4ea1030cd3e9c542de9ac9417c8784f54c676. Chain 2 (Bitcoin): anchored in block 954038 (2026-06-17T02:57:22Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3e2a5297-f613-49cb-a1ca-9310292695cb.json and https://artists.proofprofile.net/proofs/artist/3e2a5297-f613-49cb-a1ca-9310292695cb.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664c1fe667af4b42ae270c18ab9e2385636756dafd63c7cc3160d5142a408b1b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USA371069903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa349e408318b9300287ca8cde4548da25c11557fe891fa61a5e845ae74c4a2e7. 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/USA371069909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e142c12780061c86171ee74319661887fb3923583244b570182ebabb55b9987. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USA371069910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06acc50b57e20a3898c210805142e04900705dca4201d22885dca893372f8ffa. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USA371069913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a7c7b52f081f1192ac48801d96a67cd809b17c05b650a78a1e32c821de80b9. 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/USA371069926.
This River Is A Time Machine b/w This River (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc305e56a00da5d5968e22f6735c879af924fb896ef0e6e2d5253b45851f8161c. 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/USUM70983505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11d56ec9c792dc077ab20c121194aeb2829e52fa796239c45233cadcfaba2b8. 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/USUM70983506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f8d258c5b692a88e35f9a2633dd105ae98590e1b78f28a79716697975394f1. 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/USUM70983508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2cb84c436b77cd96706bf60ec45267cdddf8740520b4d87bf8859fb2c769790. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/USUM70983514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa78fb2a4f5bd45c4f0e9282cb7fdf42dd7a1007a2958e614672e1e18e4131cc8. 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/USUM70983662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8567e1ddfebb252c1636d825fcdc0fd09892ab7e2a8a8f53e1da00066c7aa3. 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/USUM70983674.
The Time Of Your Life/ Fun - 1996 Original Broadway Cast
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc3cbdd79e27173db35722f8741748d7ff5e7c0fe93d64bb058e7eefdb202a3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USUMC0110250.
Do You Want To Play Games?/ Stars, Stars, Stars - 1996 Original Broadway Cast
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62589292c6f9e682c0127e842300b597ef33ed69cd5913c04191e02d0018998. 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/USUMC0110252.
Cross The Line - 1996 Original Broadway Cast
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffd509c35bd4123d6e2d9b02f45031aac4e1fa9f6e875c060edb0bb4a41032c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USUMC0110254.
The Nightmare - 1996 Original Broadway Cast
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e2dd1eb03e477be84180e3e0990caf7fabe5c8d59c496b6ecf6e3d440bf1e2. 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/USUMC0110257.
Dancing All The Time/ I Want To Know - 1996 Original Broadway Cast
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097fb0de4ca8d24b5b22bb7a3563dd13421eed87e546c789c7c7b02f2aa804b1. 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/USUMC0110258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa26efe913e89db81f3e714e40631c61c372fdbfcc65df15a0604990b4fb99b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USA371526201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0386c0b6596841cc454b653c6d03622a5b75ef71d2a4c3c39072d75e22b5a0. 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/USA371526220.
Finian's Rainbow (Irish Repertory Theatre Cast Recording)