Emilie Luise Frederica Mayer (14 May 1812 – 10 April 1883) was a German Romantic music composer who became one of the most prolific female composers of the 19th century. Often called the "Female Beeth
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 0x3f952c318a3e706f8207b0f68098177776730c76c90530bcb2fc9b6009a109df. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4b29ae53-fb9d-4d19-9473-b48c834d6f6f.json and https://artists.proofprofile.net/proofs/artist/4b29ae53-fb9d-4d19-9473-b48c834d6f6f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mayer: Symphony No. 4, Piano Concerto, String Quartet & Piano Sonata
String Quartet in G Minor, Op. 14: III. Adagio con molta espressione
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 0x1948205f8d83a7718c882b9f6bb2033d1fdc829fca08734416e79a9d89e105e7. 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/DEB261800420.
Piano Concerto in B-Flat Major: II. Un poco adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99af8dcafab17c0229eaab24804dce7c451956047865ea4aa8643ad61cb06aa2. 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/DEB261800416.
Symphony No. 1 in C Minor: I. Adagio - Allegro energico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36357cbe9acbecbace27f63c7e6f620a2019a6e8cbc746e4b40e007634aea3b6. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEB201929301.
Symphony No. 1 in C Minor: IV. Finale. Adagio - Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5585f8fb147a9ca437a8ae38cb9f43932c199ebffee6bf39ce0049aac9d4344f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEB201929304.
Symphony No. 6 in E Major: I. Adagio - Allegro con spirito
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9b8ca6a2fe1c2e43c549dcdaa7efd993256669fd061ec16f3c577c58eba3e1. 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/DEAD62201601.
Symphony No. 3 in C Major "Military": III. Scherzo. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf551b12235ecce38921bcde40a002ef9c242e91ffe3d432641ead82bb7ecde. 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/DEB202251103.
Symphony No. 7 in F Minor: I. Allegro agitato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2132b03186938d2009d103b5f7f224a36dc4c534c8d48e39eaa3712e678bf9. 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/DEB202251105.
Symphony No. 7 in F Minor: III. Scherzo. Allegro vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4a22d53e2338f98b807309c0c8fd3b11ac352f8ceebaaaedaafeafc0daaaee. 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/DEB202251107.
Symphony No. 7 in F Minor: IV. Finale. Allegro vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b675bd0719f9af3f14d377f467a6a215e8233ea3f2768e337d91713808860d. 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/DEB202251108.
Mayer: Piano Concerto in B-Flat Major & Overtures
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc853cb8e2521a8a86a4915dceeff22890242029c66414b33538bce94d91bbc0. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/DEB202255401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10bee1d141a5652b62dd3001cc07f6d05e7f55846e3b3a5c82a4dc3ec2fe1ca5. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/DEB202255403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4fc037e874d58065b22474f947d39a839d1eada38755d84afb15013caeebbc. 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/DEB202255404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7a85460167c6d197d096519b60a3dc8d789973636b4465ac3d6621c799315e. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/DEB202255406.
Piano Concerto in B-Flat Major: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662e2218e91fa682fb9fa79854ba077952320e6ede1c470750526b2ae7db24b6. 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/DEB202255407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6fe9ae27db5c60952ff6430fac06596c20dee60be4c6b267cb74f711b6eefd. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/DEB202255402.
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
Piano Concerto in B-Flat Major: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d9d80046dddf26b5cf21ff3d66e3e953b6495f7e433e9c6c874effd8564dc8. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEB202255405.
Sonata for Violin and Piano in F Major, op. 17: X. II. Adagio non troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42f100d7f13298c5b1e507a80f8f5370df51d989481d674520be0a2281cbf94. 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/DEB202260210.
Emilie Mayer: Symphony No. 4 - Finale. Presto
Mayer: Symphony No. 4 in B Minor (Reconstructed by Andreas N. Tarkmann) & Symphony No. 6 in E Major
Symphony No. 4 in B Minor (Reconstructed by Andreas N. Tarkmann): III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc15661ebbf9818e14586bf068a85e1b04bd08dc420173a8f89dfa7c1b329a13. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEB202361503.
E. Mayer: Sechs Stücke für die Kinderwelt, Op. 48: No. 1
Symphony No. 2 in E Minor: III. Un poco adagio cantabile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe230537a4f3b06797d010a9b44684ed621867d17e4fb2ee2eee66a9a11d276bc. 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/DEB201929307.