Alexandria is a major city in Egypt. Lying at the western edge of the Nile River Delta, it extends about along the country's northern coast. It is Egypt's principal seaport, the second largest city a
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 0x5bb50808503fda70a2226a4c83fc080b6caca80dea0dc69ad9e269bca9505e03. 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/fa3cfd8b-f921-4e75-8d4e-6d5029280d4c.json and https://artists.proofprofile.net/proofs/artist/fa3cfd8b-f921-4e75-8d4e-6d5029280d4c.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 0xacd5a8c83983c0c4dbda378e7fa5dc568a44cece036cc59d3f59a658868e8d96. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USANG2068944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa40bcf59a03fdc7bddb1590932e4882c307b61a97c0888254adba2994c07ec. 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/USANG2068945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde86fefd813060b0d4bb8eb69c1460d9234a17d68ff74deea3636a98bf2de0a4. 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/USANG2068947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a4f1f92061cf939c25db6f03c4d932127bf5ae878373e448db9c9c2178a06b. Chain 2 (Bitcoin): anchored in block 959138 (2026-07-22T16:51:18Z), 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/QMEZE1701037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759d5df7bda25be32c2d307a4cc34b8ea3375ccc0fcd1e671d5a8075ab092c1d. 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/QMPKX1608712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314e334cf1e9f8da815ce820f7899fa15e06200e3b4db77fbbd0b8227f1ba399. 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/QMPKX1608713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf5fbcbd9a6e14c0911d6fdfac75c54039f61515c146221b2042d62ecb15cdd. 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/QMEZE1701040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7595d94fb9c90c5e8e5ac4b2b1d3aef178f0a0be1488e36c48d40d2a4eb9c9e9. 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/QM2PV1669969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b82e2108e93a3c305046b22ee0c713bdd7497b023985d2463519de958b42533. 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/QMEZE1701048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee511356a1bd208387c4c0850fe9b816cb35320bc0c62377ab51bc5a9174812e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QMPKX1608711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8998a277582b9b47d4d7a36940e9d4f0e385288c009a5761b84246604fb7a2c8. 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/QMEZE1701042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b6091212e0be485ca61dd315e05f7b2f6c1f415e43a7a23ed8338891e82fd4. 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/QMPKX1608421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556c8a817223dd63fbdd9a4c8f6441d07a19afd5f7a897b1f263d0a00e1b51de. 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/QMPKX1608422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cac45350d2b67e4dbfcba30bc2de1c79809fbf5cf8b40b10bfb7d621949cb4a. 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/QMPKX1608423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeaae4a2eba729ede81e5a8579ab8a2a270a88a2417e83f6f7b31c66c7094d87. 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/QMPKX1608425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc6a25fb4f326aa89c194bf51150bd4d3017d51d5d3af17a24ba27992c8a584. 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/QMPKX1608430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d452ef02e84cd7942a7685494c4269e4bec6037e3a85282baa3a5823d989c05. 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/QMPKX1608434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf68360713d8139026c391ae5c7ab02c4a46f11d7fce84f23d91df4c28a2c952. 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/QZTB42345156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee511356a1bd208387c4c0850fe9b816cb35320bc0c62377ab51bc5a9174812e. 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/QMPKX1608711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759d5df7bda25be32c2d307a4cc34b8ea3375ccc0fcd1e671d5a8075ab092c1d. 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/QMPKX1608712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7a644c487ed3ac204078b69fb86a7e7e8886e883699a581f2f50e286bb50ac. 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/QMPKX1608714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992d499fde1d74929fd45d9734cb97de2f9afaaae5ea8e7b27683b1236238553. 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/QMPKX1608715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f725a208c954ab13a03c1b8a72ec9de4fa47afe9f14907469449c5c2031433. 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/QMPKX1608439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae04d33f39a7e867b7a25ad29de21a1636ea5e60337d5aadccee7cc626ea711. 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/QMPKX1608440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2198a18d8cef22ada6020e8e7334aafafaebe5a1b4f70812f524dc29a9dc45. 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/QMPKX1608442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10386bee4e856820ad4076d68314177f549fc4dc66ea140f92a7a49b3451dcb. 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/QMPKX1608443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e20f2d6db33579558bae8faaf46d30610b550b2f2ff8c4644de9319f7f88688. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBLFP1591685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a65e1f916206a717148d54d0f7e66a67e8fdab673c1a9471e47d84e75f8910. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USYBL2301072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b5a727f6451686742ec114ac0aed376f5aa05a0695d5e85c62a2722ffdd760. 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/TCAHL2346838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033fe9d38e1710948039bbc18f8a1c2f917c63b3424bf89cc7248bc9b4129268. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TLREW2230228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00813697d32149cadfb0b840569ab4f9a3b610e45f6b18832043dc3375ff259. 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/TLREW2230246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1263ff12b448a83ab8550061f2f0f380aa21df69c2fa9391e9ce2dc603ba3a2. 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/TLREW2230247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84483378a987f3fd3d937389a3ebd3d11aa5d1392bf4adfda2b621a32853b33e. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GBLFP1591695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c60a95f4ae0146745936a099abe58f6d0d21ae3a11d2a7dc68e6c83d1fa5bc1. 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/GBLFP1591697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c8087f557de734122efe02f66f31c4a52f333c227cf42efffbcf3804c8535b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBLFP1591625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36e611fd1ef308fcc90ada8dbd5ca23e22c0f0cf04d5143d21b576aacfee02f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBLFP1591630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a4036d1fa6716575bdf608fe8e2ba6a7c470fa4b53fe99fbbe1cbe75d430f1. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBLFP1591610.