Mensa may refer to: Mensa International, an organization for people with a high intelligence quotient (IQ) Mensa (name), a name and list of people with the given name or surname Mensa (constellation),
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 0x7fa45be362b0f4a660644f330017d653f8ce4dc98559f4d573b25fe1f7a1ea7e. 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/2177306b-ee2c-4345-85f2-907353141b1d.json and https://artists.proofprofile.net/proofs/artist/2177306b-ee2c-4345-85f2-907353141b1d.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 0x7018adc1dbd779c084914a23c6b89dfc9215396cdbccc752199bce3a6305ab68. Chain 2 (Bitcoin): anchored in block 957959 (2026-07-14T05:54:20Z), 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/NLG661900931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4631f95b735295823d0879725c72629061292465cf3dcd68272baa6ce9f63bc. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NL3GQ2100275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f92b3dbc9da7c18335e9ec6128dc4eecb673df7e637a9d4fb5f2ac9190c8d2. 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/QZK6Q2498866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7df3216cde23462ae50911526d66a84ecc11b00f519a68b1793b959897610e. 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/QZNWQ2462419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aaf318791a20f3d34b87797f5afbe027fe8ca3c5faa133b612b6ed32b8f450c. 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/QZNWY2496632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf787dbf8a239c81106ca6855f3eae540fb4cf204dc3ef728dfcf3d6a7c718a. 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/QZTAX2435589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190e98e693350804268c99c9eb2e8e61d02b42e74609d3e125e8757d8f24e954. 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/QZTB92497930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190e98e693350804268c99c9eb2e8e61d02b42e74609d3e125e8757d8f24e954. 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/QZTB92497930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee64257383c6d0345bad93ddf26d62dd74b290c3199d661a19ad42f4233c55d. 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/QZWFJ2447049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33727a8dd63a3a5b2c7fd51109c5012eb4dcd0fa4aaa1e6dd2253eb97086cea2. 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/QZWFR2402757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2662fae3d57067c530c0151bc5bb5eaf1d8abe6d6ced0fd12f6b26e9707347f4. 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/QZZ7M2438015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db97ca7971ce273a05f825403c5b9781e8034740747882bd9b46077d3290817. 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/QZFZ42540983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86775b03f0ea7b7db0216879ee47a7442f02a0a0bbbb1e9eb18b89f1379bd5fb. 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/NLG662000593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9176e35bda17f9377e98bec6d32cf281605e2b10826638c310db6efd9e901f6c. 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/NLG662000653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86775b03f0ea7b7db0216879ee47a7442f02a0a0bbbb1e9eb18b89f1379bd5fb. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLG662000593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57289afffd897caafac34812d9a89d0cd5d02cacf7ab8445442ad3465a551d36. 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/NL5HJ2500025.