Drew Gress (born November 20, 1959) is an American jazz double-bassist and composer born in Trenton, New Jersey and raised in the Philadelphia area. Biography Gress studied at Towson State Universit
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 0xa417c668b6ed99e4af95fa52f326203260b21e2afb2c8fc81b5cfa9bef581b8c. 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/38793aa8-c68f-4258-96f8-c58be1c00678.json and https://artists.proofprofile.net/proofs/artist/38793aa8-c68f-4258-96f8-c58be1c00678.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 0xd57bcad302052a6a6db6e42f5074cca0bdc2a181973555443edde9dca1488bd4. 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/DEEN40501501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5638d9801e078514c982ae5cab9591e9bfa5fc0110c317c6e9ee2ded1eb1e7b7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEEN40501505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506b7dcff75b920e54b3dc25e61ee98ce816e7483a1c2ba3dc9b58072e42469f. 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/DEEN40501506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f43917b6a35023365952ce01411c5e519715b668f96ab99bb69d7463b9ddfec. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEEN40501502.
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 0x923f7c8adea64bcbea8d75b41cb907ac5fd90cc0c61ba5c3f461e956c3d5817d. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/DEEN40501503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e07dac47ea7361dfc36856d25cfd82a60b1f25f98275d4600c984e1086b971. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/DEEN40501504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818f5343719952157730ee9b66133c7d1d0bcae521367c0f626834ad393c65be. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/DEEN40501507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195c9c700dc04819c8135a3aac3a495d2afa0237460527dd4353d006ce2b6fa7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US29X2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d882a3968fbfe4407688b856ec454320b28b437ba1d5a321e5e65b617c4d6f3. 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/US29X2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7405e4364ee9f2879516f74c42dafcdf5ba898199d0ca8303f975065ec267d8f. 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/US29X2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063f578eaba9bd1a58d383eb7e1e1a03c7035f7a0971efb9000dc42765d1eaac. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/US29X2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99901be022b3343f2de120715b638c6a1aa5f8d9e3b576fbdf7aca7048517ad9. 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/US29X2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47535d05bf0ae26c8dc4b5c54da15661f03cc162937ee558acb2a08a60b38b7e. 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/US29X2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6536b700108f63510323bfe1edce2639d022b9a774c94c70b77499703614bb92. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/US29X2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d394a0a77bb80b80f3810dba7f5781a303e1bc407e5b18e4d7b8d8bfdc08897. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/US29X2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe3ee6ce2cefa3eeb2d70269a3ddf43ec19a247af753058a2501e831dacafb1. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/US29X2100007.