Lu, Lü, or LU may refer to: Arts and entertainment Lu (duo), a Mexican band Lu (album) Character from Mike, Lu & Og Lupe Fiasco or Lu (born 1982), American musician Lu Watters (1911-1989), Ameri
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 0xbe0aeb22c994a24e1f4e3ebc5ea71df70f8577f173c7b470829a1eeab5801872. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dd5a4995-7d4f-4400-96be-c97d4178454d.json and https://artists.proofprofile.net/proofs/artist/dd5a4995-7d4f-4400-96be-c97d4178454d.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 0x41f20095f62c663f54fae785e553d5a6460849186a7e097aa001cb1caef52c12. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZNWW2364778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f20095f62c663f54fae785e553d5a6460849186a7e097aa001cb1caef52c12. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZNWW2364778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c56d4278ea9c748082d1b0e18e4353431fde812eed062d72997fcda84d9892. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTB62377588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c56d4278ea9c748082d1b0e18e4353431fde812eed062d72997fcda84d9892. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZTB62377588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e63d711202637495d6e3b24934a45fd6ae3760ecc650ca6d2485a43bcc7c98. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/QZES52463723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323b637d00cbf3e067b1f8c5c51950e82642cb832f3c4576dbf20d74f0ecc220. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZNWT2463442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15168b6283a332e6b9812f975a531f4a3a9027f1fabcc960111be7fb0e81378. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZZ792456204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1c46ab66c02f9805f29d293aee5fc040ac61d97e20b275fa68fdfb0efee09c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZZ7M2460575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15168b6283a332e6b9812f975a531f4a3a9027f1fabcc960111be7fb0e81378. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZZ792456204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f6e1e39f001fe2d5d2cc1984e6b49b08fd715f562f384658bcfe7decc362c2. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZZ7M2460576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df86aa73ce76046cd00a03eaa54c79fcdd955f481a5bc2baca0d7c6e9831965. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZZ7M2460577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53ec0fea70fe20eddd720da829826012025809aeda907d49a5ee95208c5e6c9. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QZZ7M2460578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85ee83f423ed5f118a7bddca4d2ab379134e6b5b3eedc5dc0e0f841dcca48ac. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZZ7M2460579.