Donald Paul McCaslin (born August 11, 1966) is an American jazz saxophonist. He has recorded over a dozen albums as a bandleader in addition to many sideman appearances, including on David Bowie's fin
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 0x76c895b00a109ee3647df13dea107faf0bad8e69a3ecd702a9dac301b27c139f. 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/4e93ec21-b0a4-4322-80fe-8c35fc75b134.json and https://artists.proofprofile.net/proofs/artist/4e93ec21-b0a4-4322-80fe-8c35fc75b134.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Perptual Motion (with David Binney, Adam Benjamin, Uri Caine, Tim Lefevbre, Mark Guiliana & Antonio Sanchez)
Casting for Gravity (feat. Jason Lindner, Tim Lefebvre & Mark Guiliana)
Fast Future (feat. Jason Lindner, Tim Lefebvre & Mark Guiliana)
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 0xade5c9cd6ad79b6039b9d50edd022cc40cc1248bb342070b8b6733513bd2a4d9. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:47:00Z), 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/USAS91441001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86647e57d707398b9704cd746a3218ddf85f7faaba328ae9a000028f24e1e95d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US9331828204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846d9dae97d9c1867c0153e64d011f54f46ab7835e24717cf722160e4c4c40d8. 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/US9331828205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42571429505f036e6f4e959e1c2315e05a8a7675983d8357af03b4ef02d4cd79. 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/US9331828208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256b9fdca692b9bff1e63c2a3dc3a97ffb0836d5292aca02aa5c1c6c2cebfae2. 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/US9331828211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710a691e21074ec14d1bb72704c79793636a15f1416162a64468253337a43756. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/US3E42000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e046d213bab5e01343de1b3999b598c7e15e40f5c9cab21ee90fa12994ee73. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/GBVEV2595422.