E3 (short for Electronic Entertainment Expo) was an annual trade event for the video game industry organized and presented by the Entertainment Software Association (ESA). It was held principally in L
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 0x9b3c26475cd128346895157371d3b3024fb168ee7b6f424b58b8bcadab3de983. Chain 2 (Bitcoin): anchored in block 953617 (2026-06-14T09:00:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1c52d842-3c3c-4763-9131-72e5b453ee26.json and https://artists.proofprofile.net/proofs/artist/1c52d842-3c3c-4763-9131-72e5b453ee26.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Never Hold Back (feat. Saukrates & Method Man)
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 0x175456e641d32d147488151b5cb06128343bb3546b1c9898e7bbeb4e2eb6a727. 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/USE830970350.
Timeless Tunes: The Instrumental Tapestry (Instrumental Cover)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26055a5ff30be88760924e8aad2be825f8107b002d4c8740f187fac897122acd. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZWFN2381858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781d99f60549effacbe3f2c3fd11c5af59d5bf5d0061c5884750965e44f42a44. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZWFN2381867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc254ae5d6a2e2e535b215dc55485b8b7a53bd1de55bf1185822415ea1dea991. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBVPL1800061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccbd0ee92ef97bfb7c03c342e7339a8b29be12a2af28b48a7af41852cb803469. 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/USDJ20400448.