Edward Heywood Jr. (December 4, 1915 – January 3, 1989) was an American jazz pianist and composer particularly active in the 1940s and 1950s. Biography Heywood was born in Atlanta, Georgia, United St
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 0x3916158d6dcb1a7bf88c8a4ce814b32971adafc7f343254eee20af0a109f10bf. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/042eac9a-6b22-4aff-a7f3-0ff8f448e286.json and https://artists.proofprofile.net/proofs/artist/042eac9a-6b22-4aff-a7f3-0ff8f448e286.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 0xb604173b147afb8bae640f22774277749ab32f328b541f5e5acb6aca990a247c. Chain 2 (Bitcoin): anchored in block 958635 (2026-07-19T00:58:42Z), 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/USUM70504962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5d9c35a533e3653d787220c04a444918e5a31e69726f736d2e7ca2c898a5d6. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USUM70504963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f196d90d0f7919eccdcad9906a7793b9e9835f6fd1193a20a9314f1e34bd0f. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/USUM70504967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a4e066ea3c71d7ccf0a24bfa21af41ca92740a2cadd9073d3017a1872718c0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USUM70504968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a0244fcd509b8733c315ee95b78c835bd85e1634d453250c42ffbedf9d130e. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/USUM70504969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab263c1d57b2da19aa491ac8a6979ec28c62a69d9ef3ad11f7fc423468cb3b59. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/USUM70504970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098083514ccee626f5387f2bd6a8aca87dae654cfc10971b3e861f55dbd0dc6e. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USRC15707083.
Begin the Beguine (Jazz Archives No. 183)
Jazz Piano Master: Eddie Heywood & Mary Lou Williams
Beyond Patina Jazz Masters: Eddie Heywood
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bda5218578bd22166c4c408c90701306256275b148c3161cf8160d2c6503ccc. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBDAG1391249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cfeffa9af85c709cafdbad76b86fc2e3ac3652588c29bc365989273f62fa232. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/USV351346400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c48c34c6d7e4f3990b5ac265f8e3edce3bd0912c0b6e2fe967d495c4f133b5. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DEXN92018135.
Complete Jazz Series: 1946-1947 - Eddie Heywood
Two of a Kind: Eddie Heywood & Ray Anthony
Essential Classics, Vol. 601: Eddie Heywood
Jazz in Bloom - Eddie Heywood's '44 Classics
Canadian Sunset / Soir sur le Mont Blanc
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89f03e6c446f829908fb0c3966f9e55a4b815d6135c8a5a3a35dcaeffe1e059. 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/USRDG0313200.
The Complete Decca Singles Vol. 3: 1942-1949
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16947f75af1384a28b82fa9a2460235d2c56a60888d1bf0a6e919dce17fcd94. 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/USMC14773786.
The Golden Age of Light Music: Amor, Amor: Music for Romance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4853b5dd45c54769c913c216b1dcd6d1a58b0dac7c9999e4a74e2607a7abc7. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/CH6630753322.
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