Put3ska was a Filipino ska band formed in 1993. The band's name is word play, combining the Filipino phrase, putres ka ("damn you") and "ska". The band referred to itself as a "60s-oriented, 90s ska b
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 0xc115403f5dd7e113fd1d84c7a6d9cbee62651c9929cade9c0b28a1f5f8ba71b5. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e4ee1b90-5c66-4609-8daa-d923e8314a9b.json and https://artists.proofprofile.net/proofs/artist/e4ee1b90-5c66-4609-8daa-d923e8314a9b.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 0xe323e7380e10eefc393058790afe961889897a8e1db432d5bc3b074497e698a3. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/PHO019000039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998e2f5f1cb11d4fe74c23f88376297a0dd4bc052db017d9cba461cd6af7be63. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/PHO019000040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a06c460f71346fdc2c9efe841091c479dcffd99f50ff4e9f2b078f9af96120. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:32:33Z), 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/PHO019000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde4fd7a544dc55a4c06d0c1cecd47cca71f3a0ef6eb08456e65e869fbeb2eeb. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:01:28Z), 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/PHO010000041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb1fac96c5de1026b6cd5de45edf5723bc912bf8d61c0c83871d23186cd24f4. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/PHO010000045.