Eric Stern is an American vocalist, accordionist, composer, arranger, and pianist based in Portland, Oregon, best known as the founder and artistic director of the band Vagabond Opera. He also perform
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 0x277a07334e47297b7ae5ea9028d0413d7c96c35477baa2de855badf105e573c2. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/459271c1-62e4-4fba-9b92-7657b2804793.json and https://artists.proofprofile.net/proofs/artist/459271c1-62e4-4fba-9b92-7657b2804793.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A Little Night Music (Suite for Violin & Piano) [After Sondheim]
Rags: The New American Musical: Overture
Rags: The New American Musical (Original Broadway Cast Recording)
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 0x25afaf5fb9703828ad8162ed06379b46efb66bde940b2645a1b491125d7f6232. 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/USSM10409531.
Rags: The New American Musical: Penny a Tune
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ac96466eec0f67c755a62d288fd46138ff7f5274fa6c46556bd220dfdced09. 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/USSM10409535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfedab92172df5e1fbeed53714a6cdedea9ddd99097841a9dffe1b04b37b3a358. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USSM10409540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbbcb67e4a3b7ffd8fac95edf67eabf64e93ed20221e808f55228e96e85ce4a5. 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/USSM10409547.
Rags: The New American Musical: Greenhorns
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4e63334f1979bf5cc763bedd34da48601bd5faa4f5bf984a74ac4addbf7c53. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USSM10409532.
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
Rags: The New American Musical: Brand New World
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bbc886724e2178df4a84cec53da9a945b7f207f72ddceef15e4b1d7956e83c4. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USSM10409533.
Rags: The New American Musical: Children of the Wind
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e03cd72e9e0cfc05f4ed568ef3a4e56804b0bbede01e17c46c80b25745d4c4. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/USSM10409534.
Rags: The New American Musical: Easy for You
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c1af4aa87794fa7776909a20a900adfa5456e77fceed80d954d28d3b348579. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/USSM10409536.
Rags: The New American Musical: Blame It on the Summer Night
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead2b38d46675312ad84dda44823cb51984ab1caea4662403a8b937222cdeacf. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/USSM10409538.