Dennis Magloyuan Regino (April 9, 1961 – November 29, 2020), known professionally as April Boy Regino (), was a Filipino singer, songwriter, and actor who popularized ballads such as "Paano ang Puso K
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 0xb8b518865c1b9ef4edd47128c6d7f8d7c3be7f53f65de33760274f60889b6611. 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/6d9db78b-420a-4aaa-85e2-65b7b1fbe661.json and https://artists.proofprofile.net/proofs/artist/6d9db78b-420a-4aaa-85e2-65b7b1fbe661.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Legends Series: April Boy Regino (Greatest Hits)
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 0x25b6be81bc158bc55e4b14d4cb26aace27b559a7f5810a395f3fa3fdff26937e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:37:30Z), 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/PHS090201117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4aa03a1c1082c3f99ad311c910148d4a59686034d6d9fbdbd3c7bd73891265. 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/PHS090201121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e60a3498e6911da045b3096fcc1fb8c1843d242975a2d5f278b5785179c108a. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/PHS090401578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1721f8fbbdd98645c843e65e4f0bd821b8d127bf65854d6939dfa35e3211ad77. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/PHI019504317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56540ca74e84a0ab0a65a1ab4658af34457075748a8a88b30fd120baf838815f. 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/PHI019504315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8efdc609a540821ec73b203ad575bed64cd5d1a47a55a1073d2008dc98a4e3. 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/PHI019504319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66c212dea4ae7263e96b7cc73b0c421baf4ecf7956f834b3d9452bbaca8c84a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/PHI019504313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09836c75f37eef483af3b1f6dc2077dc622a718150fc9d4c65ee8c934f3cd685. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/PHI019504314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea93afd36af5af41b43c0a69fc1778355602d9a552bfe956aa94b17872a2ece0. 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/PHI019504311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3177ec5d38e76ab3a0c0bdbc52db0dbd015e77c1b15e1005082d41b7fa782920. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/PHI010000108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90fb37d822d54612fb7437ebf8b0a590daaa291113e1ad565249fd48d3353355. 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/PHI010000113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c9b469c31a9f3eb20429f99da0e5a6583d477091e494afe752c8598792f744. 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/PHI010000117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f8428de49b6f64815710e6c0ae571bde12f5f6adb1e8fbf443b1eb394b9085. 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/PHI010000123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fae534ef9e2377da4e1b57cb455d26269a305c6ab45e7b770d54fa6a4d0ea3c. 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/PHI010000125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1251eaf2c54e1f6a06f4e606bb6266afa0c80dcbd785533045f6138a76c44571. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/PHI010000127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e3d3b3cfb4cb55c507a73a8d1b2065c02536f0e135f8ab2832c3827b5ae31f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:33:17Z), 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/PHI019700092.
Salamat Sa Iyo (Adapted From The Song "Boulevard")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe7cc281074d5027fc52ec87cff17e9b15e2495146ecb3ba68edd6d3b219e2d. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/PHI019800094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7492f971c3d2cb0d6492d8a7b775160fa74570f62ecb6727ea20e4eb4e7ba9c1. 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/PHI019800095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe952e77fc7f5cb3f904c212e7c3628c1d3f015bac6b5b2515ef1e2f006de0a61. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/PHI019800096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4602630d9675d7b8422ff4a3d8022762189dcb0b225725ada4084fdf5dff201c. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/PHI019800101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bacc1a30eb836619c66800a499f435686fd834e43b841509f1d91c8e2c6e9c9. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/PHI019600025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a9ab47aed2c722b6b7c942bb8335c964843451c6af83ec0b3778acbbf8ecaa. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:46:53Z), 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/PHI019600028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb3cd4d47fe5cd150c7964cdb51a4f1d22e120cabf12d01d5287b1243f1341ed. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:38:37Z), 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/PHV031015255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f7708b1750a48d6b9f5268b69c16bed2afb0c39531b9af0511740c5d2c6f53. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/PHV031015258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c6082d07fb679d058740ba2b788a37ca36431aeed3370d5a9718ee41416314. 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/PHV031015259.
The Legends Series: April Boy Regino Greatest Hits
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e1e060166d66d21ab6e20d12a6944df4cb8692e89ed7b17610edd3f5fadb61. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/PHG111500890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01940dddcf90270cd0815252350d0b8fe03ae90a09ab12c6607e1677e50ba8ba. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/PHG111500889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6753f8111852f4962ff4059edc10dbcf1782c19192d00c45ddd4a93f29a05bbe. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:42:45Z), 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/PHG111500891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3080a102df16b7b26b7f8f30de8aaee7c34bd934ade3ce3b5c1c4d0cc08e2b. 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/PHG111500892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d4e3101165bced4070028598b5f6bcef118e55a6b943c72c0245d0776b98b6. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:18:29Z), 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/PHG111500893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432b2e5d6fe2543be73a3b4e0e605c0249e168e8387384a2385060e9665c7393. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/PHG111500894.