Erika may refer to: Arts and entertainment Hayasaka Erika (Megatokyo) Erika (Friends) Erika (Pokémon) Erika (Underworld) Erika Itsumi (Girls und Panzer) Erika (film), a 1971 Italian thriller
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 0xa1861231c566e70030546129269c6313d9fbf8e7fe70276e58803adcb0448ba4. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e2247d34-dbfb-4ffe-9dcb-b93a06e4b1f5.json and https://artists.proofprofile.net/proofs/artist/e2247d34-dbfb-4ffe-9dcb-b93a06e4b1f5.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 0x0f1055f1ac8a8396020eeca41650938aeafc0437124c3199fd90d065da48f1d7. 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/JPW462478246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b3ac865b97bf7a51e9b93e04a18db58a08aab642e147827cae8a7a084433de. 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/JPW462478247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d8bf6d1b9e40742b0c7d8b638d6dc1fd0807ef76f2a9aec644efd1f03fc2b0. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/JPW462478248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03088e792e8b2aabb987a9fd1b51fe70b901a10d529be07c45f0d85298216b0. 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/JPW462478249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4fc0ee8caeb6f6e10e7f77d362673294c441b368aa4e7a8050552d02af5865. 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/JPW462478250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2860cdb949ea1b6bebc5600c76060afda2a29ae50857118590efd5b41642a214. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/JPW462505098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b867d4f43db2c7566fb1f76db259955f0a7c46e6f2ec5c609bc2e5a5589f48. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/JPW462505099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2db0eda110666e2c795931f077a818e884204e026e83254ad27d71cbcf9eeef. 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/JPW462505100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b69b27bd00d47db6f16f718fff7ae5a33beae8d5bc960aafae5bbf077ed710. 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/JPW462505101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ecf10f00a89de42eeffe0ff345619ad4f298aba895741b262b173e77f89bbf. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/JPW462505102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee288892c367dbed6d95ac80b1cfedc6f9d860287b22377923a09dc9f256d25. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T00:05:41Z), 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/JPW462505965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5968deb336c944ea86c4f3317ad8f05532972337cba8b6aba6dd83f5646fd11e. 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/JPW462505966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562974fbca39bcd96b938550c591f435f3e0dea3be7309ef14a47861b393028f. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/JPW462505967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e047d77087b8a5241ead966e8fd18235e162b416794a5eec7f3d3978ee0054. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JPW462505968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ebd3be524954e96b2dda28bba39b51ea4de217d998dc41624325cf5dba85365. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPW462505969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b6c9de75cfcd7164061f0ecb52d41518bca8b28bf0a873d57c8ba2ce1d4e79. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/JPW462507982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e61381997f9c5937743b8c965e542c394c6c1ab3f2ebdd158a34a5b65d2a3c. 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/JPW462507983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9694944010795fcd1a763e581a9e510f04412adea88eb35c3613945b16a7afbb. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JPW462507984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99051df1b82a56984ef09a2ccb710551e2c78a20db3f82bd3e4d7ef033a3cbf2. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JPW462507985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575d1f941dcbb569df66e40fe7f2b50defbf22828a0cf6dcf677206e31249d9e. 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/JPW462507986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136a38774471a7772f321c60357e584834c0a827ab25d0ef9ad12b01fc4f1ddd. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/JPW462509049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb82ae99270a5e760404484e4e5f1967e5b4b49b9962c4b31a45bf2e6a04da0. 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/JPW462509051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9653f94d03d5e43fb9f64a5ab29b7181d15957d0da94780c66cfe8f1caf49320. 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/JPW462509052.