Cetu Javu was a German synth-pop band that was active between 1987 and 1994, consisting of singer Javier Revilla Diez, Chris Demere on keyboards, Stefan Engelke and Torsten Engelke. Vocalist Revilla
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 0x55955471d57f52fcb011bceee14a901383946ec47ae749145187279d809b8fae. 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/cd2b86b4-9793-446b-944d-d0053ed93b19.json and https://artists.proofprofile.net/proofs/artist/cd2b86b4-9793-446b-944d-d0053ed93b19.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 0x589ec337d04a140486fa74156e82c5c35132a15c2c72fbb8920a20371ea087c8. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ES5059200058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2323e3d127d0ccd4b0b35a174d7817a627d86bc56610966a73598857835a64d9. 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/ES5059200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ba9588589d14e6b428c28eb0667ce3664e679dc84688f863c44c318443b12d. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:55:02Z), 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/USA560961785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b76a068688b647e197be8566fc0569adf25801461b2870664e5737084da685e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/DEA311105846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5cb21eebb2cdbeb4b422bf1ff73950e12f51da697ee5f164d126b69b302125e. 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/DEA311105847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e8955e697c4c78fe8347bbda01157edec19a0be7df0040d100a3e69c3046cf. 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/DEA311105855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1715c21eb800e5b02b95ed960c1e5b1ab82abf18ad7877439d72513faee80a. 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/DEA311805221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7392fdf0296af9ac1e0d0cdbffee0c9ae590d0fad8fa82eba56a3ace29e3b5c5. 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/DEA311805224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc1c25c1f7a86a594b4f1a95d8b6ea7d8a18d39b4eeadb61ba2e4821de15ea3. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/DEA311805228.
Situations (DJ Funsko Remix 2021 - (PINK DISCO EDITION))
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e03ff72381f7d9f9f5df50f6dda17ac805cfd62c9e8c70559007d4dd58177c. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USA560987558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078bd10df3e4f7f22bfb4901e0468ed5af5618f2bd3ada9eb17447a970e6dcd8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM7281456090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb752c21e56d6e1b96cbaed5c120fcfe0019825cdfd1071eca651045c2d332718. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USA371146987.
80s Dark Side - the Dark Side to the '80s
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ccbc7cd7095795e6d1ca8ccb9fafa78a17c475bcae69b78b62de6302066fecf. 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/USA371574610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7434e833f5b8387140a72652495be4c9c96f2d77071177e566c71095e3bf05d. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/USA560987570.
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
80s Darkwave, Goth, New Wave, Synth Pop & Death Rock
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab819a591797bb79cc6f028ebae9abcc028fbc81ffa73c7f09693b3a069a7abb. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/USA561051688.
'80s & '90s Love - Power Ballads, Slow Jams & Love Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d66070d63245d3acddc3f7ad2ec7e0a9dbcf2cf5dcba37f54c498e42714934. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/USA371121843.
Valley Girl - Soundtrack to the '80s (Re-Recorded / Remastered Versions)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1955904ae15ba759a2b2011b09a2ec192894e2feebc66a09e057defa7adfe616. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/USA371025132.