Benjamin Darvill (born January 4, 1967), known by his stage name Son of Dave, is a Canadian singer-songwriter and musician, based in London. He was a member of the folk rock band Crash Test Dummies in
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 0x8e663d55b0f3721d87c96b0ef2dc16837c07e347478503585a86969b80ae21a4. 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/593d9c24-7c99-427d-9c4c-4fee0b1e490b.json and https://artists.proofprofile.net/proofs/artist/593d9c24-7c99-427d-9c4c-4fee0b1e490b.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 0x7d71dfdf204aa53fa613e3ae56337e86a80e2661050828e902edcad898ee9332. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:38:24Z), 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/GBGLW0900038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462c65038c41ceb1bb46c670cd6c1a68bfb9eb4dfb68c3a3cf70fdf75b8d5d1c. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T01:00:22Z), 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/GBGLW0900040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57589860816e1f697d1d63277794e47b3c7a7dcab84df01b8194b2974078d012. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBGLW0900043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06847c7fb5c1a3f500c202fde403254a43b94a74b4bbf2b6a5c62ee7a6452b1. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:27:14Z), 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/GBGLW0900044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde7b05237d52cbed953267865792bde3047d80c1683a2ddb6bb0ecd3a882d24. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/GBGLW0900048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5e95dc3699bd4fe779ae7990df762235ed98093a757ba9ef7f2735d1f0c1b4. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/GBGLW0700199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ad0f06b82dba572347d2bd3a67266fadc1dcbb4bc945c5e321a274cacd26d4. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:10:25Z), 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/GBGLW0800202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56875bdb873f1c3874efe3248b9d5b8ef32d5f69aeb4b9d9ebbe96d9114652c0. 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/GBGLW1500299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476e35f2227d25566114b56300f4927ab7cb3cb4dc6c5dd8621bcb37d51c1cfa. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:20:11Z), 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/GBGLW1500301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c5511b59ccec3dccc6a1d8f481f5fb97900196f9eda9e3357f46046cdc207e. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GBGLW1500306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ad69b5c4faa33f9b91628095cd7e1c226c0927596fbb45d2db3a09921c3d3d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GBGLW1700133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b648123ec707bdf421d3ef6d9f4df9f5d4a60768428058531c59fc1a2d04275. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:07:21Z), 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/GBGLW1700134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf055e1d2a0db1158ccc5663267134c9f2ff0e0e7ddc0280795c9adb99c7eb373. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBGLW2100881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64962556fc10f0821a922bc293644599e916eca3e8be024c18400e57a5d072e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBGLW2100882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645960fa09e9b5d1d9ecf1b7fe5846daece3f16716a522fb955295de6f032e61. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/GBGLW2100883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f782fa178af3b82a8664a28589ba85af803e93cb0ea9c92eadc4085906c869a. 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/GBGLW2400083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21fcc567a3aeb4e7cf8d33a893fc0dbfbb69008297e31669decd34b437e4fadd. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBGLW2400087.