Potra is a Romanian surname. Notable people with the surname include: Dan Potra (born 1979), Romanian gymnast Gabriel Potra, Portuguese Paralympian George Potra (1907–1990), Romanian historian Categ
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 0xefaef383d10576738963006c86a89dd31d9accdf1c47ec56b1a8668563dd5554. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0bbb2f69-01a7-432f-8190-ba4a252cc19a.json and https://artists.proofprofile.net/proofs/artist/0bbb2f69-01a7-432f-8190-ba4a252cc19a.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 0xde85eef61dcf91be907f20219726c8fbec3c6b24e8bec2e7f447a6b4d9616961. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QMFME2125297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ffa52f8d5750bd07f849f51aea7dc986f8a1a449e0d26270bd3248ab2d056b. 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/QMFME2125298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107dc6ae1fd0f77b991f1f15201f176afb43fec2888ed14415af06b97acb9605. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QMFME2125299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee67af7c00099f2435e0fb582bd0122ef6d242322655a5df616d3fe1306d76f5. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:31:06Z), 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/QMFME2125302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9482fa08c469a9bf8e27bd5518787afd4daee477ea4254bd6382a01275290d04. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QMFME2125303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd47bf206233ee32c2e5738966ec58d313ce55425ca4d5a79767d6f74700049. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QMFME2125304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d34ff2d4ec7b1dd8eee97763b59cbf070cbd674a95055df92bb011c1e20dd2c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QMFME2126737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96368062492b6adfcd49841480024135d119f194441787bb532c5c4ac343115. 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/AR6B51800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63442430c6232a3f702b1c370df18029e726f25b4270cf06e3d08ba11a2af40. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/AR6B51800073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3937ea201b5b5513a38f4242232cde9eb46fbc4cf46f8298e579eadb02e5933d. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/AR6B51800074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8f0f265e82323f5095e2e58d8d53ff4c11cb93997eeee7025d1c48822ac142. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/AR6B51800075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa676e5f1bb23dba94b6ec37ddb53399018be893a84bfcfbd0f4c55526bcdb791. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/AR6B51800270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc38297cc9c0675c726b4b26e0c03b102e6d944c646480469a5685a522cf32a0. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/AR6B52100075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a4c6ad5a2805c683dacd3408c9794e69df36743d4a72ad5e14d60c9798414b. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/AR6B52300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f99c6d33830ad8dba020ed226bb38f174d1c9709f9eead595caf836cf772dd. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/AR6B52100058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2334eac2b4ec90c508bb6b8f6389c09f922b48cec8ebfae745b47deffb4e05e. 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/QMFME1972897.