Petra Frey (born 27 June 1978), is an Austrian singer. She has released twelve studio albums and five compilation albums and participated in the Eurovision Song Contest. Biography Frey was born in Wa
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 0xbcd70ec052e3b2539dde0b9a7ca4a48060b1352dc15dcd1c9cac15d7cbb32b7b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/75310720-1cd1-4ddf-83f3-ca1efe14e546.json and https://artists.proofprofile.net/proofs/artist/75310720-1cd1-4ddf-83f3-ca1efe14e546.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d318d8abb63f29a6d62663f18bbef85d24e1cc183418faaaa5b134305d5b27. 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/DEA609600453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f5f2c322567f3b5d2b96a34b62c20af9d0ad6862bfc781e28be17535b690db. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEA609700578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed7f8f1db526825041b949cf5534c1062d23abe9140d4db63b5128a5c30c53c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEA609700579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf07915713fb0a0ab82f39d830ded730ab5fbb45ffdb9ec1a88dd813b6601937. 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/ATK239700054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325c4316e342690af13f09a4d60186dd416c6e1c4e072f1ee82b9e1cd42bc40e. 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/DEA609700581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8b92de84067541d9caab617e5a92c9c13347213f58b47e6845f5c7e4043060. 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/DEA609700584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6345517374dcb637d7d1eeafc3e7edae56eef647a57937d622d8a684b4df370b. 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/DEA609700585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b2c4c652a5943b52dd356b37fbf79320b4f0f099501806f6688163bde9ecff. 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/DEA609700055.
Heut Nacht schlägt mein Herz nur für Dich
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ea2f48016f289bf5b5c457e7ad8d71277de923a2a957384e53d5ac22a89c43. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEA609900123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaadbe02ecec7fa5c8168be88cb38f2fb9478e25dd3698682baa9b31e0c7757bc. 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/DEA609900100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f5f2c322567f3b5d2b96a34b62c20af9d0ad6862bfc781e28be17535b690db. 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/DEA609700578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfed0b1ab7fae52f20ad8f7ab9b8cd88b6ef64b902526f2be39fe681c8b95931. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:37:11Z), 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/DEN120402151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c24af593f5c5ce79087be8ddee8ba32308f0001f4e0b48c4bab60bb1e86058. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEA760700201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc6a2c55a5b89344e9c395e809b02f20f43298ccb4c81c6dd61cbac3d84cf7a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DEA761103008.
Der letzte Tanz mit Dir - Best of Hits zum Tanzen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f68181ebe813e44116dff458cac364e33ad094da41257806921a22d068ca55. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/CH3331900028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7194b6fd7cd09bc1d2d1d6e80c32ed56b47e784f500bf2da26add8ea1be7ba62. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/DESJ42000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaadbe02ecec7fa5c8168be88cb38f2fb9478e25dd3698682baa9b31e0c7757bc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEA609900100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf07915713fb0a0ab82f39d830ded730ab5fbb45ffdb9ec1a88dd813b6601937. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ATK239700054.