Druce is a surname. Notable people with the surname include: Duncan Druce (1939–2015), British composer and musicologist Eliot Druce (1876–1934), English cricketer Frank Druce (1875–1954), English
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 0xfdbed92ad302c45747100523e7ac27e4dffbb4daf5966e6a2a40b8e7c6e88cab. Chain 2 (Bitcoin): anchored in block 954043 (2026-06-17T04:15:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/40560514-1d6d-42d7-9e95-34f6cad07f8d.json and https://artists.proofprofile.net/proofs/artist/40560514-1d6d-42d7-9e95-34f6cad07f8d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Until the Sunset Essentials, Vol. 3 (DJ Mix)
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 0x40ab68cf8200948d44edf9572da48c98471b93bb31ca9930114bb3dd655b3860. 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/US83Z2222397.
Until the Sunset Essentials, Vol. 1 (DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9c3783a862499b60428a51667dd72c0bffc74ef444456fe4b4805dbaec61e8. 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/US83Z2102672.
Sun at the Terrace - Lumidelic Remix - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed29f39e5f825ee2d9bc4e4441b948bf508ffbe4dedc61237655b0bd84021942. 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/US83Z2120364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e8aa042e7177831b7ccf3ea7a5fd3b0f524e0cf31d6e677b1cd1ff896e10ad. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/US83Z2026361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143f3279d03ba91da2ffaa97dcf2f848849b8f6c54a07dde6d141ac33077cf9b. 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/US83Z2026366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955430442bdb3eda08e9bd3525f6003587303291d9c25538de8181c959bbe44e. 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/US83Z2026362.
Until the Sunset Essential, Vol. 2 (DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457f2c14f627fd1f2e95185248354c6092573790111f638801536100a5d58602. Chain 2 (Bitcoin): anchored in block 957025 (2026-07-07T10:59:31Z), 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/US83Z2345443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe61804748a051bc6839bd19bdf1d4b8dfe46060d645443924cc6ad284e906c. 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/US83Z2146287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74faef14f536ea573532f92d6f779b7cd1951b6176867415e0936d306416ea03. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/US83Z2130003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6119d38b86a002b4a5a9eae06b1d00cae8d4ba2c86a2ece41c06a1b776cedee. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/US83Z2044750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e15c8caab6490ec87e64ddbf43609e63ee9a8290b2637704e68eb4754ec632a. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/US83Z2020154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdece42cc8f109f14a87ef3283be8f547cb1f8e02e7decc83eccd595920c4fb6. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/US83Z2017092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf925bb7ccdeadd402a2fd1bf0b1eab96296b20e968a1df4d9fc5641bdae5d52c. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/US83Z2017093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820239e343deb710365371a00b8067e0d598913d491d275482323d21baf52fea. 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/US83Z1917805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23710bd72e2040d0b767e16fcf186818faaf1becc1bac85c0a102a9b069ba1d. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/US83Z1816817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24aeef731b257999c3c196f77bf6ffcdbd1d191258b8bb2cd4768532a79a7b7e. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/US83Z1769012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34cbecf55cb6eedc574635d8abf0ba2f0439504cf3f038aeb66ac71dbabe1b4. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/US83Z1818032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6cc086691a61c35f1545ff492ae376ca649f044c3fe751c8121c41b34a12c88. 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/US83Z1818033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb896bc8e052b8c3759fbe3d0e463385c54a5f6b61054ff323ef7349d536e16. 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/US83Z1818025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde708bb9c9ac88d7c943dbfb1a55163521195ae59c838922acb52208d29091a5. 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/US83Z1818029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba388253a2a855e1f16699f44769498f7b9a8567433f62f73157a4fcec19f7c8. 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/US83Z1818027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9ddf43c97d960b2c902b0bb59cb6bdbd2ddf41a3298a935bceb3942659366a. 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/US83Z1818034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6ce141aaef5d28be19a55fc2a6a321959562af9b56985ffd265522cf211d72. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/US83Z2222393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174b836752317f5c75b8e9053c9215cc25315f5a3bc7ccc8a5620c8d2a0c078f. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/US83Z2222394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede0955010782e7045b789daed3d9905714a68a723433d9d0653aa122c6173cb. 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/US83Z2222396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50f236a0143f7eefa43bbcdce4409ebd2f08dce7bf5dcd946c0ae4c7d32af6b. 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/US83Z1807407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a407438128acd899c5e6bdb746fe6269ac863524721d6b8dc84ddaf82ae385. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/US83Z1807406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1cfa0ec94bfd39cdb2d0f344d6e61d72ab5549e013d9ea988b30ce896dfd6f. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/US83Z1790869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599a3789f66c0ad5aca123b2459dcf5ba0aaf1b9d78984961f68cc4cb8ab404d. 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/US83Z1930011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03994fad2612005dc8641515270de653e8b559102e3b76d967165a07f4b0c74a. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/US83Z1930015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2cdc401282097aaea9104a27dc1bea3b78f3dc611e912c3b1fc27978ec6e9a. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/US83Z1651311.