Dave Eggar is an American cellist, pianist and composer. Early life Eggar was a musical prodigy as a child, beginning to play the cello and piano at age three and performing as a singer and actor on
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 0x2a931df3d7b6261ee04b57da98717c3376d49e83e2602175eb9c7bf89821adc8. 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/27302df7-9e14-4897-b4c9-bd74cefb0d2f.json and https://artists.proofprofile.net/proofs/artist/27302df7-9e14-4897-b4c9-bd74cefb0d2f.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 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 0xe052886b03d116734d3a0e526c8a068bf9566656686f9aada8bbeca0e81118ad. 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/USDO19800331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8970c803c24de138f0e8720b09fbd6e547f2eb07ca680a091547bea7d97af01d. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/USDO12300330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb398b315ca11ef1faf11861bdb15bb9147e8f94cfc657bbe98e4c9d0480deaf8. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/USDO12300390.
Blood Before Pride Presents: Tidings of Macabre Joy
Pieces Of A Woman (Music From The Netflix Film)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2afd5e1867405825ea45691153e87630ce0b48a29c36586e3b6c70703d964742. 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/GBUM72006736.
Aftermath (Music From and Inspired by the Film - War Story)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88aecf492beef665853ad8d45ab4b72fab71457a295d3639bc0b59d0c0c6efa5. 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/USA2P1427367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc521b9248e22487c7d4f2bf92bbc6990b9e04cc78175fa8cef9e8bc41a0711a8. 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/USA2P1427368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee39552572f69618552075f3aa2e7a15c0926af79accb389d05fae26b80d078d. 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/USA2P1427369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb68428fe17a37cc2a74996e4cb5c5d5bbc47990d77a498a22e00c367e86fa2. 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/USA2P1427370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5220a64d88a95c75e95c502bbaa099a718dee4e6147b8a90af280156d931133b. 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/USA2P1427371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f55e538345099c92a4dfecd2d3443ec7eafd6ab03e1a7fd6d2775623e2ad0b. 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/USA2P1427372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b5e601b1a9a5b5f057ffa51b89db1f4a12c38f87966a62914e6b96b48a6d5b. 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/USA2P1427373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba6f8322ae91d97d5d9d7bbb46ff9af559fa2d5a992a991dc004aef206ced64. 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/USA2P1427374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32f9c3ae7294cdd1146049f3bd04bae6a596fb28414aa6b88c371040e2775b3. 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/USA2P1427375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe052886b03d116734d3a0e526c8a068bf9566656686f9aada8bbeca0e81118ad. 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/USDO19800331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x782528fac1ec1644ff7c03dc06bf47b944c545259f269366d8f137ae4f6e7360. Chain 2 (Bitcoin): anchored in block 960231 (2026-07-30T08:33:28Z), 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/USDO10500306.