thumb|Penelope Antena Penelope Antena (born Penelope Moulin; 2 September 1987 in Brussels) is a Franco-Belgian singer and songwriter. Her parents set up a recording studio named Cedars Studio in the
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 0x4cd7c087177d931ee81043068768f708320eacf30420dd15111eb6bc9487508b. 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/497f4869-6145-4ea1-ac9a-935eec6fbc2b.json and https://artists.proofprofile.net/proofs/artist/497f4869-6145-4ea1-ac9a-935eec6fbc2b.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 0x5f09fe2cabc31256ee844eb432182d231e4a8113e88d2dcb4659f02dfa0018cc. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:24:24Z), 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/FR9W12301854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5efcb53713c83965a8d931acb2d9b8adf309fc0ddc21972e3c32d456d6a0277. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:55:12Z), 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/FRZPA2512300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5efcb53713c83965a8d931acb2d9b8adf309fc0ddc21972e3c32d456d6a0277. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/FRZPA2512300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4afb7cc241d081c57b9bef8d5f980050613f11aba9901d357807ee8d09b48f39. 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/FRZPA2512310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3142e3264f45ca178d05de84eb37a3599bc7c1bafd4af6da1f04bcdecbbb9c. 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/FRZPA2512340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71c709a7db58c8be4fa82434545f10e9c1f95b56156d410ed16d4ffcc71e9bb. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:24:31Z), 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/FRZPA2512360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0e0b4b61bc1a2753632e977051c3f38107240b69545ab696e5c5e0e884f54d. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:41:51Z), 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/FRZPA2512320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ee7d0282f72a21c305da7d67c10900273d026bff3149e0d933fd3c11e7cc8f. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/FRZPA2512400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd83d7179043c20d798da2c251a30787079424cae8417fa69142c24163619ce. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:51:39Z), 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/FRZPA2512370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e0b90a34a352986ec6497741849f096163c8dbfd24b1748b77ec4843097307. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR0Z42000810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e0b90a34a352986ec6497741849f096163c8dbfd24b1748b77ec4843097307. 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/FR0Z42000810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c971f8cfd1c0fc15c37ee33839ceeb091d87035d8c5c8348fff09dd87b5315. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/GBKQU1740826.