April Boys were a Filipino musical group whose members are brothers Vingo and Jimmy Regino. Older brother April Boy Regino was also a member upon the group's formation in 1993. He appeared on their fi
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 0x375ae92026274ac931d9234f790efd7c84c39a94a3829f0f0ba9b2df2a8cda6a. 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/40fd3023-8764-4424-a100-152d351facaa.json and https://artists.proofprofile.net/proofs/artist/40fd3023-8764-4424-a100-152d351facaa.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 0xd29eff7ef6a3da17a3e25fdb07d5c0e655973978526cd3f262d589dccca6992d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/PHV021011448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f1a02420dcbd47a97c5e40d6e9b368948a255b01326ea3e883d81426eeaa75. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/PHV021011450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742951c9aab018543c809ffa122f2e18f222b9375f7bbb01bd7681970478851c. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:33:33Z), 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/PHV021011452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66159bec1bd3a4e22c509cbf9dafe220695be70185c83d646d4bba44b0354e77. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/PHV021011453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538a280309c30c4e468cd693d186ff977233213a84f449717f2914c8eb03154c. 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/PHV021011454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b8fa575a9a1afbe2d9a51df5d4412977ac87e987a1b4376dddaf8939a90c96. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/PHV021012480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x766a8013c7267152d5b40ee703cc0b0703fb4ac76b407f6d530a73861e9758d6. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:43:25Z), 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/PHV021012483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc244cf435bfdd895063fe44c0a5cb6274083db8af5fa15c1bae888643f7130. 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/PHV021012489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5aeb4545a090087a7f6216f1e412ed19c2c9acac4e8063dc9a5ce7c0309177. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:00:26Z), 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/PHV021012490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b2b78638aabd4da2211d4da044cc6a02c2e0ebdc57afc3a30c714b645be239. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/PHV021012494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbd236fded8c13732eca95a16b7ae24284c00d95c83e92beedf568d32630000. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:54:32Z), 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/PHV021012477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b13cca575506c4f2722766b6322a5c7019515e613bda97bc9d2300a5ae9a4fd. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:12:10Z), 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/PHV021012482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7853e139d094bde49e58275b1f53c8c84061270699f98660b12516188cac72a5. 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/PHV021011414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f60df2f0eb09afea365b878b252014b162edbff6e94ab4043d8815642ec2ca. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/PHV021011415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba8f0b88fe267ea020c84386afdae7bdb9a878fe557dbb484d2551e2eacb1ba. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/PHV021011411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc937c5da3cd1047ff34ab5c554f9f9d4d678ad15977415805e6946b9c5696857. 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/PHV021011417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a069eb5ffa6501fe431dfb151ecb12dfcb7196802b5a7834f9fb7cb6dd1b1ad. 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/PHV021012485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61fd29b7faae0b9a7f1a2cda2357eb11d70939ab047f32789373ded4d80336cb. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/PHV021012491.