Punga may refer to: Punga (mythology), the ancestor of sharks in Māori tradition "Punga" (song), a song by Klingande Punga, Namibia Punga, Tanzania Punga Mare, a hydrocarbon sea on the moon Titan Pun
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 0xc11142792cd1d1c84f89e8c94d8ec8048ae5112b9c4f9c8689fe0a05293997e6. 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/3d41b6bb-c39f-42b6-85f5-ded833857b21.json and https://artists.proofprofile.net/proofs/artist/3d41b6bb-c39f-42b6-85f5-ded833857b21.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 0x8fd47ea31e2889298ecad54f4fd307bbdbeff4220f6843b67a49bbb29407bcf3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZTPX2388443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f718641df0b035f2c2da93471741e93a559f907ade9ac9f908a62ec0abfbd2d. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/NLRD52212382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442ac3756975d9fe62e06eae7aea1c2a168b45a5380b9f26617db565fd77c27b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZGLS2195033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f06d4947a31c1794906bb6b1d049d18a1e9a9428e741716489f0177bba3cd1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ5AB2118212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe102c25b47c35cff5c737ce1934cb934877ecdbebdb9f0b0da71fb0b7c145bef. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNJX2047314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc307f883dd41109d84be56045ad5735613605a5fa63c6144d5231f2d3cf56f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UKXN21946677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e944093b3d5d93417f8572d9cf4f5a784713a8fa9a0dda51c38e24031bfefa. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US7VG2453615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c2a7833b8ee4ef3209c7e7c7842e08bf75a2a450392bb87acd99fa0bb7fe82. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AEA0Q1913872.