thumb|upright=1.35|The exposed blade and tang of a Japanese sword without the hilt A blade is the sharp, cutting portion of a tool, weapon, or machine, specifically designed to puncture, chop, slice,
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 0x3db208944ffde715ac94536f8805f7560095def8a4cdce29253e1310569dbf95. 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/708f1a19-7ade-436c-add6-2675a8dda5f9.json and https://artists.proofprofile.net/proofs/artist/708f1a19-7ade-436c-add6-2675a8dda5f9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Lion Goes from Strength to Strength (No Compromise)
Ups and Downs - Pain Music (Gutta Fab Presents Blade)
The Lion Goes From Strength To Strength (Instrumental)
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 0x17e1ac7f71a50bbd1d028bebcc79aabe0673d7e614618079ae2f731a7feee9ec. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QZ28R1500005.
Liquid Drum & Bass 4 Autism presents: Redefining The Spectrum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec20b6caceb7d44123021c912ae4f5f99d5f110bb5ed3781e3c6d57af18ef57d. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/GBKQU2050899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe507a8860383dad65db142e1303a33a9b0c0999a2c4b0e7011e521d416c9a7af. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USUYG1115592.
Liquid V Club Sessions, Vol. 5 (Presented by Bryan Gee)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb55b0b6221b8efe736cdbb6566862a85d337809541003d02db86f4614894105. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GBCEQ1300075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b88afc4d9132559242d89a8bee3cdca6a6bf85da4381e214c438ded7635bf54. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBCEQ1300097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf09aadb0107e3894aaf3a71870d0daa2b6434c744a2a980d32a0c7282a2049. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USJ4U0710041.