Erina Yashima (born 1986) is a German conductor. She is currently Assistant Conductor of the Philadelphia Orchestra. Yashima was born in Heilbronn, West Germany, to Japanese immigrants. She received
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 0xac07367b4be6bd5a282da4a8229ba2b2a7f690aa89af5b3b9ad05fdf2fe513ab. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/48befff3-cd0b-4e18-ab23-fc5bb878df59.json and https://artists.proofprofile.net/proofs/artist/48befff3-cd0b-4e18-ab23-fc5bb878df59.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rachel Portman: Tipping Points, Vivaldi/Kerschek: The New Four Seasons
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 0x61e308745a965163068e06ddf6f2e1605afa18d407af0c2ac260d19e9e3c1309. 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/DEE862302201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c68d87c41a213abc9eb7cd0468ba83eb72e1d477b35a00dcd97b726b27f367. 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/DEE862302202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7cb589c10b2da8f344aac343994584c8c48417ef38815bd4e5f9b6153fc5c23. 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/DEE862302203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a6361be92007007417cff7f3ff7301927655e3bf55a4f8b39f65c7e99650bc. 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/DEE862302205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab8cd6483c83da71730936ca01edcb58e7141f02d62a3551d4b670183049b8a. 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/DEE862302206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02fe3b18bcfc3d854844fe5be205da9d1572ee5128982544b46dc0366f082901. 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/DEE862302208.
The New Four Seasons - Spring: II. Shepherd's Wildest Dreams (After Violin Concerto No. 1, Op. 8, RV 269, II. Largo, Arr. by Wolf Kerschek)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d06cdbe960326d74d3feff6b37ba1b2cc5435c52c6195542dd1b857f469c2c0. 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/DEE862302211.
The New Four Seasons - Spring: III. Dances with Nymphs (After Violin Concerto No. 1, Op. 8, RV 269, III. Danza pastorale, Arr. by Wolf Kerschek)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f5848dfa8a98f28261217051b520813a6556182c6f7bcdb82bf96600a12750. 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/DEE862302212.
The New Four Seasons - Summer: I. Heat and Raving (After Violin Concerto No. 2, Op. 8, RV 315, I. Allegro non molto, Arr. by Wolf Kerschek)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe342332dcfb7a6122616c7ff29740f7edd16d6872a64f2016ae7e76abd703cd5. 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/DEE862302214.
The New Four Seasons - Summer: III. Summer Thunderstorms (After Violin Concerto No. 2, Op. 8, RV 315, III. Presto, Arr. by Wolf Kerschek)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3098c8f4ee5b50e738ed28a201d6309f18753a16be8c7b9b03557eef5e76a72e. 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/DEE862302216.
The New Four Seasons - Autumn: I. Harvest Dance and too much Wine (After Violin Concerto No. 3, Op. 8, RV 293, I. Allegro, Arr. by Wolf Kerschek)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019c36b0b99a40e02156f1619ba91c11b28a049dfc01baa7049c0c154b824724. 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/DEE862302218.
The New Four Seasons - Winter: I. Freezing and Shivering (After Violin Concerto No. 4, Op. 8, RV 297, I. Allegro non molto, Arr. by Wolf Kerschek)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12de219da9890cd568d471029a3fc7f7ae30f568d315f31f2ad244b4014d2b4d. 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/DEE862302222.
The New Four Seasons - Winter: III. Slipping and Falling (After Violin Concerto No. 4, Op. 8, RV 297, III. Allegro, Arr. by Wolf Kerschek)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534df2fd30b62a3671e34c95f36d0e8cec83c1471c72205a9da99f31260cc6ba. 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/DEE862302224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e308745a965163068e06ddf6f2e1605afa18d407af0c2ac260d19e9e3c1309. 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/DEE862302201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac63c479cdc85ab55784087e34b260bd722304a1e7c90c0fd0058cd21c0093ad. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEE862302227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc127edd09d5eb88a48639366b9bcc121429e2aa6c525b42c39a3f95517b6d60. 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/DEE862302229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a6361be92007007417cff7f3ff7301927655e3bf55a4f8b39f65c7e99650bc. 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/DEE862302205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab8cd6483c83da71730936ca01edcb58e7141f02d62a3551d4b670183049b8a. 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/DEE862302206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a6361be92007007417cff7f3ff7301927655e3bf55a4f8b39f65c7e99650bc. 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/DEE862302205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7cb589c10b2da8f344aac343994584c8c48417ef38815bd4e5f9b6153fc5c23. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEE862302203.