David Berkeley (born David Berkeley Friedland, September 22, 1976) is an American singer and songwriter. He has released eight studio albums, one live album and has published two books, all of them s
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 0x4c822d90eaef87f37d120603c83c51b51ccf65174dc8d6957195c07c5eb4d2e5. 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/88e7302a-f1e5-4a16-9f84-cccfbbcde8ef.json and https://artists.proofprofile.net/proofs/artist/88e7302a-f1e5-4a16-9f84-cccfbbcde8ef.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 0x7a1715f087c993a0a447a403c292aa6a93f5e80a11f949f1b67a4290b0c35a1b. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/USTCG1071657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316d8f6e48375735dbd794c20ffe2dffb5cdb69b5fff0ee62023b131980f7c2e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USANS2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df1cefd2f327ebec2729297888ff07856262cc0ac2a42842dd139d8045fa706. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/USANS2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47d03bf7d6ecd5f79d8c4371efcbcce806598224c9f26854eb221afb79d9167. 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/USANS2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863b937e56b9f04841e39f2c29482674583721ab16a9f90025654757999b4011. 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/NLD682203234.
Artists Den Volume 3: Hudson St. Recordings
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4759fbf2ec4ed491e9df7bbfc01503ce0958a5c1df166d364999ba1ea79ffb7a. 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/USDME0500048.
Sail on the Waves (Mix Cut) - Solarstone Pure Mix
Solarstone presents Pure Trance - Mixed By Solarstone & Orkidea
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c577acde6366aff45d7d0f00566bea95943f62256c6f647ed5e02cbd9050f7d. 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/NLD681801475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc5742f12f5456e5606715951bae21601ef1989b393fbf694b91b1a19458208. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/NLF711709892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc22def0b438830067d45e385afaa7a017b12d87339898af8ab4175293413c1. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/NLE711210010.
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
A State Of Trance Radio Top 15 - March / April 2011 (Including Classic Bonus Track)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66690f222c40a231906ff5746ecb5cc01e0de39f836f452bf34df4d0dbe1f34. 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/GBKQU1134733.