Urbandub is a Filipino rock band from Cebu City, Philippines formed in 2000. The band's current line-up consisted of Gabby Alipe, John Dinopol, Lalay Lim, Sam Saludsong and Russ Manaloto. Urbandub is
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 0x172671d66de9ada3b726f722f94f1ec3d23a5ce6b9783e898f74f7c67212fcd1. 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/db91c445-0c84-4bf6-9fd1-f1923e62b697.json and https://artists.proofprofile.net/proofs/artist/db91c445-0c84-4bf6-9fd1-f1923e62b697.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 0xddf05ad58d217538e6af150585f95ccdbc4f471686b8ed6fbf69aefa234d7aef. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/PHW012300193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16039de1fcb6eb0c88af931b31f6cbf603bdf5c9db262a0916835ad54896c1c. 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/PHW012300393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72969d6933d221934b18def903a81a05f3e1596295f9fc7929eda4358437e7c0. 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/PHO010500073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae71f8b8aa69efc47ae25b6410038b0369f31b9dd6c75fd7ea9c3dd8470af145. 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/PHO010500074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2cea93f04908e42d6f6f95040010f16c0a47ab00a9d1b9e6405966f8ab530e6. 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/PHO010700122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cdfdf3d9449f2fd0414186290908abe4b654a6cdefc48d12ed79c1a1b308aec. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/PHO010700126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96971a64bff14f63c66033fe85b600c0b24dd98cc45fc1ef40308f39bd0aa9b0. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/PHUM70900249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa6aaeea94dc594c8f62502a76da24f1051e3afbbfb2eb471dc462e19e408f9. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/PHUM70900250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b688cf223a12dc7a581502a97d87c40a1abccfd3848685a75f22f0dd7876bfe. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/PHUM70900252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e338afde908325551f8d5dc34d04d90bb49553a860ba7e529fca46968ee8dbb. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/PHUM70900261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0c47ac179a63aca24412d6ae731bd72398d59ac37dda71fddcb9fdede73336. 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/PHUM70900254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c892b2015022365613ebf9e92da6d8a4af840339a0280edab33990aa10403e7. 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/PHUM70900255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4dfe700a4d73e262f66192d309a3d7fb75e5bb39176283694c7395b2d7ca40. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/PHUM70900256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed45542eaaf5fa6193d74cf59b7db3005bad4a6fed47a1e97196f4765e5f32cf. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/PHUM70900257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3086e891e992918d0dadf9dd10d10ec590bfbff9f1d537a4c6730aa908897082. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/PHUM70900258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ef84dab349d3e37ce60cd538dfe5dc600bd4da2976c498900ff2e491f79884. 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/QZHN62473245.
Sending A Message (International Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70dff6f8747dd85b962ec251c99e02e739d422c0882a8b1ea42bc479ddcadf7d. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/PHUM71100120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f15116c04e6b4ef1e81ff580b1d90f8d9a6e499f73330594c6156546a8e397e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/PHUM71100122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e6b467d1946d839d191741f88fa0fa4bb7ad9249482dfbe7732935b45202c9. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/PHW012300254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b79166fea6cd681a96a27a8a3c8aa6906e8511598d2b90afa323c88c1a5ea4. 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/PHW012300255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce2ece6378120bf7c285a99b783646579837533bc9bab29481b55b73998f2ac. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/PHW012300256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d2a98c53b91f6cdd7c84492b8820c697a20677523f823feaf1e2ebea6d2437. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/PHW012300257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16cffbd86eb3cf2dd549922cba070a8e14f1935f0404a8269f377b2b0a51b47. 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/PHW012300258.