Pentatonix (abbreviated PTX) is an American a cappella group from Arlington, Texas, consisting of the vocalists Scott Hoying, Mitch Grassi, Kirstin Maldonado, Matt Sallee, and Kevin Olusola. Character
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb307dc1cd07cddcf5aba56d24ea72e91bed799394bb696756f115f27a60aba. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/22e268fd-9aff-479c-be98-efed110e9d60.json and https://artists.proofprofile.net/proofs/artist/22e268fd-9aff-479c-be98-efed110e9d60.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa93a0113d4f0ac253f64c0da7bc6171fe21fbca1703383e551c5ffc91bf91a. 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/US4DG1300067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3a335588b3c59c973b4ce0de51209b6a5f1d62297ce340a6568991926d4c85. 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/USRC11401470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c805aa9a93d6c65c8cd42d4c3f2e728a6e9339accf87afea5b0263f8ec6024. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USRC11401834.
La La Latch (Sam Smith/Disclosure/Naughty Boy Mashup)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9350207ae516b7cfea099bbe70f702fb949592b0d5320a8b1fdc21ebbe5633. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USRC11401835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6425cd99dc56425cfa16e919be6790fe743ee36766ebe8b46597a86001097ca. 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/USRC11401836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95752c18a97a2c0b5cfd704a8982a25b97806f0745cd04cf5cc8fa264594b378. 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/USRC11401837.
Papaoutai (Stromae Cover) (feat. Lindsey Stirling)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2924ba49800c6054869ccd77a8f6fc85380d4c139becf6c0d27709d4d974417. 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/USRC11401839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77031604eb667cd46f57c101d1876dccd16b8ddf8db0bc4f20cf7071ed23baf1. 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/USRC11401838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c4c0ad50f471f1572ab3ef6c197a9f03a663f6a4bc107f028575543a0f5a75. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US4DG1300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4534440a8da63b0e782abbfc5968298fd3cd03a309335b17035c1b3626f86ac7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US4DG1300064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a5749e47cfdd93557b72aa156e27a375c4df2d91a3b0c59aabdae8d4b180b0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US4DG1300068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e8e6f91167ae473aec929606a3c9eec8faa7547923eb09a1d97d5a72006b5d. 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/US4DG1300065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d1a9cac4fd157057ae2fa7351a67f9cd87ab5daf29d255e3d6b8e17f62ed8a. 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/US4DG1300061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c33bfb87388c3b668e2bbe51beb2a72a22c82fa0bbb7e1ac6b80f5a8fbb26b. 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/US4DG1400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0504834a119d112bf03a70ec47f489640065c93bb0c9c1bdae3f32b139c3cb3f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US4DG1300066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019aa6907493eb025e0bc7e38e74e04f4c3cd4e7063d2e2543cb24b71350fdff. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US4DG1200142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe683655f8a720a4e254bc64db182bb572739749ab1282b9096fae42dd238a8aa. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US4DG1300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92701ff22a15d862aeac72b96c08837adb949b43ec2b476be1773be13433f3d. 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/USRC11601833.
Any Way You Want It (World Championship Medley) - From "Pitch Perfect 2" Soundtrack
Pitch Perfect 2 (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc04616a4cbe83d72dc1604f017bc8669fb32f083454a7073143017908aeb79. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USUM71504648.