Alex Brown may refer to: Sports Alex Brown (cornerback) (born 1996), American football player Alex Brown (defensive end) (born 1979), American football player Alex Brown (footballer, born 1914) (
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 0xa17fffdf0420add28ce713a6118c862296d7ca91e1205fa1c70f0a1926c5bcc9. 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/42e266c0-8d2e-464e-b979-9bcbaca4f43f.json and https://artists.proofprofile.net/proofs/artist/42e266c0-8d2e-464e-b979-9bcbaca4f43f.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 0x670ded2602a93199e7c4e2d9fba72319dc31a9f1134adc5d97304e08f7769287. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T08:32:30Z), 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/QZK6G2383198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4979e088874c45d3f2eb1d0c93491a25c3b33584765380e79d7b0e2a1d16347. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZFZ72416122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049f9ec4786a9ca16fe19d880088c88b5fe91a77da10799b6ea2d1be38c36aa6. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/ES75E2403979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6892ed4292c14a6691996712549535eb3be4ee74ab6e7fbc97e7a9538d41f84b. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/ES75E2404372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9561f39814c4f9e6d47c24a55dec5282203610000e0a443bde801ddd2c3371. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/ES75E2406609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87aabc7e42e7de1668a8fba4c5675236f999c5e64ae3fb472ca2da3fc36a2980. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/ES75E2406610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6787aab5b01adf0717825911c59a98506da264644effa0d78534353be384f3e7. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/ES75E2406611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bdefe388ad0e9cd89133c0c3a5ba845369e0c233334e24fdf0c16957d322b85. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ES75E2408939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eab76691fc4c613d60eb8367cb64a66fe45de1430f06bf85542d704dcee3fd6. 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/ES75E2504000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9fd2deb115593d8236bf3ae36415f62bbf915361a6287ebbd585b0230e147d9. 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/ES75E2504001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7004e1298370cb67c2464286b34e07993652174d4aac3d34d35dde69b2b68713. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/ES75E2504002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd96525567ec8aa43f7774c5e247fbfd773858e0c6c004a34eb53bd7ed720678. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/ES75E2504003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b201bbf820030bfe076f616621aa181f38d6a6b46a4fa40f02df3f7772064f. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/ES75E2504004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfcaa49a8295bddd127c7004dfde5a022caa00006b6841c878dfb6331252c93. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T05:30:12Z), 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/ES75E2504005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f723cded952f093cc3220a8bf74b5689c63cbb8df338c2dd379eaa6f05ad50. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/ES75E2504006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828eb4fd7a18df9920174f195bc86a5c1b1a4252964476e49c1e8f21b3c4bcaf. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/ES75E2504007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18936e300cdf343679be134bfbb5a318c7a17ff54fa26432dacff34ddde0b904. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QMFME2518289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00aa659a980981bc165804f8df0fb63cd32c74f26eb8f726b726f4268b18756. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QMFME2519945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18936e300cdf343679be134bfbb5a318c7a17ff54fa26432dacff34ddde0b904. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/QMFME2518289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354cf4a0b074fc0788ce253da91dd9fdbcf26ce9228f527533b657dfb21178dc. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/QMFME2519947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf2d5a092151c3df82984fcffea521c82f54876b987b49f7e2a21ffbd43d94f. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/QMFME2519948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb011a2d0e58e61d9e233d4cb58b775698339e88b3f0d68d6efc2731113ddfb4e. 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/QZW9L2455425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0a4314af772c8311d06f0a240d8e0128367c98cdaa5d55856cf7c843f0fe1a. 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/ES71G2430759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0a4314af772c8311d06f0a240d8e0128367c98cdaa5d55856cf7c843f0fe1a. 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/ES71G2430759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99be931b27df3fe54a93938592de8a064c479d059f11b0208f187100626904d9. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QMDA72454378.