Francis Charles Chacksfield (9 May 1914 – 9 June 1995) was an English pianist, organist, composer, arranger, and conductor of popular light orchestral easy listening music, who had great success in Br
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 0xa9d7fb3066f61683d07959316d527cd6d26706f45bcc284b26be53c3c61b64ef. 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/2a323f7b-fc55-4c4d-a081-0f65a80e45dc.json and https://artists.proofprofile.net/proofs/artist/2a323f7b-fc55-4c4d-a081-0f65a80e45dc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Golden Age of Light Music: The Show Goes On
The Golden Age of Light Music: Amor, Amor: Music for Romance
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 0x00505f101a034c5c8b908b309079910cdeabd4c661f0529ba4aefdcf4c6111b0. 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/NLHR52147677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238f7bd8baf84b32f12cb529c8a22c5a5161c6cfbe85eb53b67f449709b3f0ec. 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/NLHR52147678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa51342f3e71172d42adb2c282091639e7373ffb7430e4a9516a046582d9c527. 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/NLHR52147679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07c5d4711c071b63cda7aa9d9a6ba6eb5436661824532d4ef39ce523d82ebdf. 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/NLHR52147681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1318e3b2ae91e31039be43d3d4dd665b3247405e8e0baaa3f7af967756b4f17. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:37:27Z), 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/NLHR52147682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4e9d4254ee1e2d98f2de3e72551bb97755204d0d103ca6dcad751e593bb8c0. 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/NLHR52147685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8189a6e4883b38337db7990e3d708a4c4ffa55087028a3cdf307c25050e68dbc. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:30:15Z), 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/NLHR52147686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa835ea37aeaa933b41c10794777ec0af6c70c1613864ea15d73d7de1fa79df86. 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/NLHR52147688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5e9768b793bab6935a5f70aa16757727f365928fa035d3f06a2156f4fc3a8d. 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/NLHR52147690.
Three of a Kind: Robert Bentley, Frank Chacksfield, Percy Faith
Three of a Kind: Paul Weston, Frank Chacksfield, Stanley Black
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b947befeefc0104f21625dc3cf170318d36ec0a0d3ab1c38cb86fd1c5360aa. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NLHR52129811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcebda47de5f70779a77729dc978e3a62eb14edf783786d1a6831aa12267c652b. 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/NLHR52129814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7abbf184a4bb3af45b620a60206ba486bf9c9f67484c123d3f434685cdff5d6f. 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/NLHR52129819.
Two of a Kind: Ray Martin & Frank Chacksfield
Two of a Kind: Frank Chacksfield & Percy Faith
Les grands chefs d'orchestre de variété : Frank Chacksfield, Vol. 3
Dancing Classics with Frank Chacksfield & His Orchestra (Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2c80e0131650698a0fd37a7229e6541830db1671087d0205fbbaf8f7c46b64. 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/DEUE12098843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1d00924cf83d45ff3a5ce93defb515d42d597882a91edc575da3139f89ffd4. 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/DEUE12098876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d1268fe35dd4f47df5d55b68f846afdf4b0d8a38051b6ec3951e4e5638b469. 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/DEUE12098846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd647c9e2ccf43ce90488635f036f242efb1a0ff1c50c72345363f1889ac53413. 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/DEUE12098847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c4f3f29255ca0f8fd0701c23a5a3612477928109212d4a20f7b45b25b6f0ea. 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/DEUE12098849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0851324691c01a010daf28b0a86687743de9b6b7e79ebb0071da5c8d1709af77. 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/DEUE12098850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5dffc08b03a19db4785d37f83fc8a9d82a1659c639e878409b3ae1f7eafe5b. 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/DEUE12098852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59024b00d91806210971e5c360e4dde52ec43155a583b5713f411b279e15ec9e. 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/DEUE12098853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794ba8282f38ffd986cd1e7f3104105033c8cccb9d11370df51272d8e3427491. 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/DEUE12098854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f29c23b12bf865afea025ea69a2a21dba11be50c025699ef9a9a556872f14d3. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:17:28Z), 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/DEUE12098858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d39e7b009ab6a0eccbadbe95a99ddf3a87849de088822a6acc2d1697f728a08. 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/DEUE12098868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d304abe972d32252d509a6fe008e45bb42e23ffea5c22d9ebc50b5b7b0bae8. 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/GBBGL9900815.