Alejandro Alonso may refer to: Alejandro Alonso (field hockey) (born 1999), Spanish field hockey player Alejandro Alonso (footballer) (born 1982), Argentinian football player Alejandro Alonso (musicia
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 0xf4e874f890872a374caee2a6335e752b432f87b391e9656277b622fc48242354. 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/952536f7-5067-49b3-ab6c-b9d48022c9a7.json and https://artists.proofprofile.net/proofs/artist/952536f7-5067-49b3-ab6c-b9d48022c9a7.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 0x356dc780cc065da8746b34f96e181efb90c1753eab96e13f2027e099a5ef7db3. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/COA2N8200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6a02cf160c2baaaa9fa50995ff642d4d44b6b6c3403c04479204dee15cf2d0. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:19:52Z), 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/COA2N8200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34bcd69183a2d7353d2ba96c7e987f94561594dc92cedf76c361325faad3eecd. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/COA2N8200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a40bdf349078ed4ecf23b9fdc4632eddc0dbd3e3971104a0c271376f2f800f. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/COA2N8200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83aa136cf7dbf503dd059f7f4cfa91f2551066c17f024955bbf887568759dfd. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:04:09Z), 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/USHM20893529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376948511d716bd9251d431238880776db1f27bdf5b8122b05d0bb89c0f0316a. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USHM20893530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b9c820243a36a44f90a5835e006ee42ecd037a11acdd1def47f856d46b0d77. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:01:39Z), 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/USHM20893531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ed08653ff53155ea9672c2bbcd53b2c1a1eb8d8391f975e9daeea5c56def2d. 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/USHM20893532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb868a144b3eb2a2a439118010d388b4a3d30918b442874f76eb46196a89686b. Chain 2 (Bitcoin): anchored in block 957665 (2026-07-12T06:13:49Z), 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/USHM20893534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa017ded068a7bb51aadaa05eb204d89334bfc5051745b89b57ba4007b1bf7940. 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/COA2N9400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ab190d3dd6d9fbd31b518f66f10ceb29bd563edc7c25272bb73e4981426b71. Chain 2 (Bitcoin): anchored in block 957661 (2026-07-12T05:37:10Z), 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/COA2N9400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ca206779be7cbe34092a87f3ce7248176da2ae826616c6dd18bd58926d3306. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:59:06Z), 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/MX2N06157560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21e7f9f12bdfb424fe239fadabc9a70302ba046f5ecf094405e74c171814577. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:00:35Z), 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/COA2N9400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b5fc2bf3e85a279f8d33900637e2074e184cf5b4f65204dd7fad01d36b7269. 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/COA2N9400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2771298a2991dbdb2630ed6e08e032b0794027f96092280fde579d145a2fa4ec. 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/COA2N9400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16d2befe6bcb82538b1798b91ec7f2d870e3a0ee936278befd29ace5f493bb6. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/COA2N9700041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067b64cb9a0572d430ae36704f0f749e5cec591453200c398607d2322a741a2b. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:00:58Z), 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/MX2N89849846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9c520f85f88f44dd3deb65a77738cc120b554d2f70161953598708093f8f46. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/COA2N9700042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede4fc7295fea6d5acb2a9d428dd839fa77899f6753f047990cb7119cd9495e7. 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/COA2N9700044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b13663cc7d60c1222c81379dde9ef08eb2a7eff08e6e1154bfa7ee30cf485f. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:00:46Z), 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/USV291413840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6ae2ca81dad83ed9ae0fd9e91c5d8390cee37bac33dc0de5fa50a70fa784a2. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/COA2N9900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58a34f08dcb53110ecc0ec074cde019b22eb862ad2389a7d46ff78bb948f2e9. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/COA2N9900019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a57e7641bcd1c00ebc7c815a656480663448dd6f9a9b76ebcbd0b6f340c392. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/USCGH0871568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7123b6b5f51d460ab71d2720ca1e9633ebbde9430aae51c54cd50be707dcced3. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/USCGH0871566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d50d5f95cb2839a6170f8e51bf892962c78fc49a84c81756074f19e657a66c. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/USCGH0871569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4556e4e845ffd9f811b4b69f1c768c3ab12e1849498c52e630276907a52eec4. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/USCGH0871570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88c1c3b4fa57e079b433f978f2406ca60435d40ad295bee3f88e79975ff9786. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:49:20Z), 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/USCGH0871572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceee7e41ff0c024f2bdf787417a7c925c5e574c1ff21acb56b317cb3b345723a. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/USCGH0871574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9569a6c0433a2ce49969d0271ea1a4f78c812ce0a32398ad661c72b05b90a947. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/USCGJ0868448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f2d2af353bf7fa98e6c0eca2257170d8786bc47014657d264b223e1492d4f9. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USCGJ0868449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ee666910772fd578fd752ad3035ff27e42065bc1652fdbb08986f6c1a8aefb. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/USCGJ0868450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055cc7b750c04eb01860a90ed72d5f4cb4fd3825f820568752a2d3a42708fcea. 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/USCGJ0868451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb3fe64b0b5e96954e11eb4ec3bd0393d2f1912cefc00187b0828a8d2fde344. Chain 2 (Bitcoin): anchored in block 957661 (2026-07-12T05:37:10Z), 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/USCGJ0868452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3926b65079c03ae863c22f5107511c827a744bdb03b29de58e6f6efa5f0eaa49. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USCGJ0868453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a15fbccc1be1c86ed8a73a8da37d04405fab83d4532e1f4eaeb52bf3bb9a04. 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/USCGJ0868454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ee7a39d611c7acb30f2177160feb26495a3a1c8a998f574d164d11c45af4d1. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/USCGJ0868455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc50846297156fe4fdbf54ed7cb87667f38c9bfc17ef787aaab80879cdb6a3c. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/USCGJ0868456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6fd50b57e179c6f08fd9c1411cbb2db073089e304a310c583847f27ec53b12. 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/COA2N1900083.