Hyperion Ensemble is a Romanian chamber music ensemble based in Bucharest. It was founded in 1976 by composer Iancu Dumitrescude Castro, Guilherme Peluci. "PROBLEMAS DE PERFORMANCE EM IMPROVISAÇÃO DIR
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 0x337b3d1f112cb1629dd504bb237ab40a96773d50fe025e5d4de978dfa8005bc2. 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/4df7cb40-a12f-4c94-876f-63bdf623bccd.json and https://artists.proofprofile.net/proofs/artist/4df7cb40-a12f-4c94-876f-63bdf623bccd.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 0x4bc7cf1916e549926c7caa199a46d77532ff3f611a4d97f82ed3a00a53fb5d5c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DEN720802279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bae159835191a33d23e2f22c6a563ae57675f2866aaef9745abeb0dc1aca2fb. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/DEN720802293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc810494c7ef71d12cf8cc8d435cde44f5443dd54481a2e5b9ca24c5d10006610. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/DEN720802311.
Bruckner: String Quintet & Schubert: String Sextet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9f03152dbba8e034f1d4257fba27d1216a61b165b5989c2e7df6160bc514a8. Chain 2 (Bitcoin): anchored in block 959011 (2026-07-21T13:26:15Z), 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/DEN721204145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ffdafad11312c0b879648bdec02bea829d5f2ac62d983a4125f19ddb752968. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T08:17:14Z), 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/DEN721204147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92041a82288d350b0d8695dd4d06a0a6316b25152b12a0cbe5b3778c2bf46c1e. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEN721204149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b13888684202c44bddaf0832e318aff1a96c2727b6e29922695fd86aab7302c. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/DEN721204151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450aa4c1be6ef315ec9949d1f4e5a3d7156192e325ca85d16c0ef3d5ccb9c2de. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEN721204155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d53d2ed169d911d1905b6585810e43de826f2c178371c17334b88436a79773. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEN721405907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95afe0ff5d4db02abc9d9d78e5827043444631bd016316f7698cc2d6e33ba835. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/DEN721405908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ce3550f8c72597b10193960db4323f33446350c30fbe3ac9431e83bde54c43. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/DEN721405916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c53d09c26f048f18da9806eca425a76c2ecb83168833d5d81391366ec9ee74. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/DEN721607472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0297905f9c94c3fc7094fd7f6d526ac92941c6f16d1a0862bcb51efbebd45483. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEN721607476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776acca9af0e7f6c4d8592e50fba89e3bff3109ab4ea442987697736673fddc6. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEN721607477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc359df00ff5c4784813460873250b41e7c562f350b358f4336db4fb09eae53a8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEN721607480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e345152001ee851e5b0395eda3804f6c2e6ce238241e15a0fa3c1e1d2e64f31. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/DEN721607485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf8a5ee2aff673184bb7307e03a47ba636cf4c04d76c48ccaba2596b994b8fb. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEN721607488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d0a06e7c2df257d436242ba02fc676a78ffa417dfb9739698cbcaabb3aa376. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DEN721607489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ddbee698a855fc9ba2ac543fdf301ea5688e5ead69ea8347e6cc95f9cf7de3f. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/DEN722000071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06835c853c682690bfdfbe6a9e2a0a85bf2dbf8322d34c0c46c210b6cad1a214. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QT3F72569000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cafb2277f0e581be20b4e42c42f7c65a80770027fc838f2549643fa393f5bc8. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/US4BP0401531.