LOTO may refer to: Leader of the Opposition, a title traditionally held by the leader of the largest party not in government in a Westminster System of parliamentary government Lockout-tagout, a safe
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 0x76febdb85ee4a17a98d9a9cc3799d6d1cdeff83bc1572c1220b64734b2726170. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/84d71628-ae21-40d6-927b-83759719d276.json and https://artists.proofprofile.net/proofs/artist/84d71628-ae21-40d6-927b-83759719d276.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 0xcd5e79680083a6e3ca25c4824a295994fa354757f0c220f9bdb5161c0098233f. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:08:48Z), 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/QZNWZ2228875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0b58c6395b5112ad62932c79f4636a60ab790979d3b6925dbd6faad46c8fbf. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:28:11Z), 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/QZMEM2179253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882719ebfadbeb295eb93d76756e76fab81b39f33dd10d1bb44fb2bf3b053c7c. 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/QZHN82435996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f6c5d71ff7dcd93bb9b3da0ad08e02e188942ff38591196a7e79b00c510b4c. 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/QZHN82435997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c6dfaf415732a8270b16d0b1e194db7358807441817e38a83fa0c3f4ef47b1. 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/QZHN82435998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76dcd307b91ff819a2731c3c8edfae2fb214929fd65584feaba3b2c90f87648. 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/QZHN82435999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c91d298160711b477ead24c3410497b49496696a952a6f0385687712939bcba. 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/QZHN82436000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891007ea09ea82a3b850163b743b3b478bc89e61cfd27b4909fce484d623f2d0. 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/QZHN82436001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb817a7ddd015dc27380b671298fa593b85d0419d92990aeae6bc03ac1f010fc9. 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/QZHN82436002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5279b9e139fdadac1be62db89c5ece7001c8e11dba5da656b7afca6e43a197. 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/QZHN82436003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091feb10ad220a8c9859acc6afa59411fb0a540ea6f990ac5921bd5524524544. 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/QZHN82436004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27725d3f892668a45c052d20dd47828d6f2d334035cc2f8fd4f924e982825f0. 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/QZHN82436005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4071ec07cf535c5f4455ef0361694e152c0d1e6db8788f236e3f1fd5fb480dde. 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/QZHN82436006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c6161a9063d09007862916c84adceaaaac7302341fd96b3470dab987de7400. 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/QZHN82436007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9aebf18e1be214f9c6e5c1f40843b62d13afb9bf043510c3d00d9c9666bc0e. 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/QZHN82436008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40027c18f0834d6be763500079f72a2c1db5912920aeedda4c00b4ead5c9bbdf. 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/QZHN82436009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc71cfd04426fe0c0d148626798f606a9093e57cc63c0f740f2811b1290b14db. 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/QZNWV2285518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816ef230e3c7a9f68af56534213b46c697d82bd8cd9ca87365cb4adb2ac6cd42. 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/QZNWV2285524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba78a62a9e611a0767544226ec2a803d9a17fed57a25f6ad510ac8c7ea160358. 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/QZNWV2285525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495501e11036d9ef09b881b797afa18c9cce1d2c21b0e1641e490ed7f26c9c9d. 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/QZNWV2285528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6480597d780034f074c669f1465d0e057189bd954ad50d838f08fa00ff9bf716. 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/QZNWV2285530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3958a28998f01b1dca504dadcc5c013eab47728bca4fb501860b346a6c65cc07. 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/QZNWV2285531.