Steven Blier (born November 25, 1951) is an American pianist, recital accompanist, musicologist, and, since 1992, a faculty member in the Department of Vocal Arts at The Juilliard School. in New York
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 0x2f063769e79c6808bc988ca9a460fbbdb84aa5ce821d3c3a5e38d95a89e9218a. 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/779c1028-a675-4f43-817e-df6155f132b1.json and https://artists.proofprofile.net/proofs/artist/779c1028-a675-4f43-817e-df6155f132b1.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 0x9b8b8c51e704e5564edde29657a4a044c50a5366c42cfaca3cc9a1d56d14aaea. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZZEB2318400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f84f6a6c75e4f7739676b56a5c2d266f13d82081d9e042074166a95f85aaf0. 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/AU3SE2200192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bfb4759cd313761c95533325275285dfceefc0db8f15dc074bc608fa3c1e074. 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/QZZEB2351484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab46e42bdcd64d30dfec8810cfcdd90de754fa6341f2b326ba215f391865892e. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZZEB2351481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8b8c51e704e5564edde29657a4a044c50a5366c42cfaca3cc9a1d56d14aaea. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZZEB2318400.
General William Booth Enters Into Heaven
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b52848566e0b7e993692354091ad536b89a3ebe6ad72a535157292df9d59d7. 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/USAB10620412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bac5b8b4394211abc8e12a1de576c1d7f279ada1f0446857fe829f9511b4b0c. 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/QZ5FN2368206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a21e2feb877fa18c4da832aa4125e593e949675732e4d58bcd792ae513e1ec. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZ5FN2368219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6e24ea727ab8b9e647eb9feb3e8512456c894d51f0d3dc683abd5cb31b0428. 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/QZ5FN2335025.
From Rags to Riches: 100 Years of American Song (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e42e66e37fd35ab457fd84c716e8f3d4a7346fb5f322b408517131e0db463cd. 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/AU3SE2100491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59165d468e6528ea852975040786505dcf2a37b58265929afc314b8eb13b7c8. 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/AU3SE2100496.
New York Festival Of Song: The Lied Between The Wars
Do I Hear a Waltz?: Take the Moment (Live)
Rudolph the Red-Nosed Reindeer (in Yiddish)
Gershwin: Songs And Duets - Including How Long Has This Been Going On?, Lady Be Good, Liza And Others
Thomson/Bowlesl/Hoiby/ Hundley/Musto/Klein: Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184e193993ea861f416d6a286ad31769ade9dd3ba38b72f5824b6674ca8f8821. 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/USBC16200215.
Bernstein: Arias And Barcarolles; Songs And Duets From "On The Town", "Wonderful Town", "Songfest", Etc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa769616b783fe69f4963466574361632acad36c523dc98aab98c1fd92823697. 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/QZZ8A2410255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00bc44ad81a673a428db130186fe5b4ab89e2afda26e295d79453121e0e0286. 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/QZZ8A2410267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd8baea2f4492a158e1d4a0f3a8a561ae7558702e636afde0051ba80dc9f947. 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/QZZ8A2410280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ceccba6c1afad6f00726bebfedce8c8be81f0485bdcceb267cb9dfb16aa68d. 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/QZZ8A2410283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4104760f50b398520be19b389db541c6c8ae306538837b4eba601cca3f5c1dc2. 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/QZZ8A2410289.