David Walter Foster (born November 1, 1949) is a Canadian–American record producer, composer, arranger, and musician. He has won 16 Grammy Awards from 45 nominations across four decades (the 1970s, 1
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 0x44f31954e8e7bf4a3ecb008fb5f8e5b4cf2f86e35e128ab3210396790195b736. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c0b26540-8b5d-4f47-8aed-0137656a389d.json and https://artists.proofprofile.net/proofs/artist/c0b26540-8b5d-4f47-8aed-0137656a389d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Moon River Intro - Live From Spotify, NYC / 2015
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 0xb446781ff017ab17524a84080a7e74cc3481b859bc7b786c215243b020ef0ef2. 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/ITZ041500180.
Moon River - Live From Spotify, NYC / 2015
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f6b49be8b269bf31811eb4b94dd7cb2d23b15fe09321cab19efe957803da5d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITZ041500175.
Can't Help Falling In Love Intro - Live From Spotify, NYC / 2015
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf01e0e84d1cff6ea05304bc8afda41ad5348399260925de8a99760cf29e6e55. 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/ITZ041500181.
Can't Help Falling In Love - Live From Spotify, NYC / 2015
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b505fb288b79a9b1e26f3c23edafe8c4f5b210e2d0162cf2772285371a539e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITZ041500176.
Strangers In The Night Intro - Live From Spotify, NYC / 2015
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe29de2483a01b4ce257a58493bf27c36d01d20a0a24fc1ed6174ad3ac581265. 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/ITZ041500182.
Strangers In The Night - Live From Spotify, NYC / 2015
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc212b1b1b3e0a5592f68475aa5815958cc45cc00e0c95042d230c965ba84c870. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITZ041500177.
Besame Mucho Intro - Live From Spotify, NYC / 2015
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f6770547065a78eee9a0ea6bbdf90c372fa71a01f90a5a5c2f3813a0543085. 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/ITZ041500183.
Besame Mucho - Live From Spotify, NYC / 2015
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737643f9a22fe3dc3f0b6bf0d1188a4723cc870a7a3e2dae6ef975d8a03dd32b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITZ041500178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b1e7d8305e55d3bb2a0c8aeb478df44f6f0709be5f70fef45f640301f6908a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USC4R2338394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d54718d96edfadae5d3cf2e8b01906d073ab9f3c3646f3e919e440c856bf1f. 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/USC4R2225035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc320b3e453993258abedb6a307efba5b7ee56249be4a77506f619e58b35c6146. 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/USC4R2225039.
It’s Beginning To Look A Lot Like Christmas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf12866c4e7ca218ca878c47eccdb5ec1b8a385b12abf7c4b8535fb279281db. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USC4R2338399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72195a8a9ac074f3578a3b789fe76576c0a0f27af479ccd5edfa46d45fb07cb0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USC4R2225038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213dba001d91b5f5b27ca85f7045cf4a8a6f7935e7cdb5c368aabf5d37bc4436. 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/USC4R2225036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89113e421099eedcadecee28472232c6f33a6090556ed607551a0c928f50b854. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USC4R2338400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71fc809b7619ca68cdbdbdc24b38d1411fedd2f1b3c3d1d5795f35dec809966. 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/USC4R2225037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1551cf35b2c57c1cb7419252c0c6475dca3978b133eb6bfd8d987f5a98fd49a4. 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/USC4R2338397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8268592916f7968f61ed381182b7190f28e2f53e8d63282c32afc4d467516f4d. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USC4R2225041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ff8c415fd52b36d530413efce4252f2ce9f33d1e740a700ca82cd84eb80e38. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USC4R2225040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5127fbb791bcbf35c312011d33bdb6ff45d5dc3e7a74605e943dbec0ed072d. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:49:07Z), 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/USC4R2338396.
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 0xcb51901e8e95fde36e8b13bacd1826689cf1739fcaa0a4b20fab580c5312d37e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USC4R2338395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d224fcf7b04838a487424ad979a782fcd8237394d3d8040024f5c785773bd0. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/USC4R2338398.
Just The Two Of Us: The Duets Collection (Vol. 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8282c0feee49d390a287066adae9a3079fdc86cdd6d89da2dfc5460a2b5326b7. 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/USAT20103417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2559d97dfb129890fb2bc3850a8a46c502365633a094af9a2c5b19325859c4a0. 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/ITZ040100717.