Q2 or Q-2 may refer to: Media and broadcasting KZJO, a television station in Seattle, Washington, United States, which formerly held the call sign KMYQ and was known on air as "MyQ²" KTVQ, a televi
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 0xad0b6f559545c4941520760a00b525b69a33de8b1f686e8fe5d9acfded1b1e3c. 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/13521857-8cf2-456f-9adc-f56b398296c9.json and https://artists.proofprofile.net/proofs/artist/13521857-8cf2-456f-9adc-f56b398296c9.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 0xe45b1a98ff3baf8132bde91813eb803e578f9178535fb4565f1a8108fdc9eced. 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/QZRP42207502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4174a8a6b1d4fae397d89a3495adda0692163b79f678e42a83a4a2b51fd0f2. 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/QZDA42404057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63a12b44807ef2785fba4db89f8821565fab688fb2b19c771a9e42681da79f4. 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/FR10S2537632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6468ae2f248988c7dbcc628b2496104c0a7adfb3ae8723b3dfb38e6b1689dc68. 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/DGA0S2448354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06a3f1eec7a721875a537665feda49e24c36523ef63d7f0257d57e1684a76f6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZWFX2460231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc562093aaac53c7e70f8bbe36e545ef0bd9fe0f5be5da7dfe731cb01032187. 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/QZWF22456771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1797033a3bbdac2473b954ab16c44bdd35b186609b3e6eb29b37ae1399b7a4c9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNWU2450908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4174a8a6b1d4fae397d89a3495adda0692163b79f678e42a83a4a2b51fd0f2. 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/QZDA42404057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c010eeffbf55c620f54e530d72509def9b71affbe0950919a80cba75336b5e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNWQ2335337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de4dcc1db72fcf790f6d75bd0fe4c7a16b3469d0dc14161d0309d3917a2b999. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNWQ2335339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaad925fde79eaf5d4f5a7f60abd77940d1a9f8a280d3812214a4f19e5e31ce8. 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/FR59R2570096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5554d8fd883e407e37b890720644d592d616d1ee5be72133394566b87729b077. 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/ES71G2415735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5580c784deba5facb5914bf9cb52c747db73123e034587b216779de074f4b2f. 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/FRX202513560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45b1a98ff3baf8132bde91813eb803e578f9178535fb4565f1a8108fdc9eced. 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/QZRP42207502.