Benjamin Staern (born 6 December 1978) is a Swedish composer. He was born in Gothenburg, the son of Gunnar Staern. Education Staern studied in his childhood cello, piano and percussion at the local
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 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 0x2a5c38c1222a322e3ba8f006c57bf00c9437d208296cc857362a1b5c722dfc6c. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/58c8dbb7-d8b2-4289-8ea9-473a6fb91404.json and https://artists.proofprofile.net/proofs/artist/58c8dbb7-d8b2-4289-8ea9-473a6fb91404.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 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 0x7c8408b9f8c75af9eb76d10fdc0c368de1fa44d410327654608363bebd6b24c5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEBAA2300601.
Clarinet Concerto Worried Souls: I. Introduction
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ce44087788a6facf9dde6ccf340d2f789331df69f9327821f604f0f248d4fa. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEBAA2300602.
Clarinet Concerto Worried Souls: II. Rhapsody
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50226b710406bbf86745bc7e758fb623d7d1f978ce2275e832839baf82fa3fdd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEBAA2300603.
Clarinet Concerto Worried Souls: III. Meditation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f7a04b954f0a02636e3beefbaa4e17a43ba429bb4eebeaa3e377ffdc6dfe7d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEBAA2300604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543d2ac18f23903b1590ec51a9c32314233ae950410f47706124d5a0308fe95a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEBAA2300605.
Polar Vortex: II. Intermezzo. Northern Lights
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1403bb4ee07bf9b550d8d8f43415f99d88f0414f0fee92a39746cd607c05bdaa. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEBAA2300606.
Polar Vortex: III. Finale. Volcanic Eruption
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1dbdff4a91d842c5b029a9f8a6c72cf32854781c9867579cbdb4f52e9f5ba7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEBAA2300607.