thumb|226x226px|Turk punting in 2010 Matthew Edward Turk (born June 16, 1968) is an American former professional football player who was a punter in the National Football League (NFL). He was original
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 0xbe15de52426f330ee114f7465b4e0923485e264adbcdd94b5f786ebf767a25bb. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3c938923-5ed8-4f6b-931f-5794cd9c5c6e.json and https://artists.proofprofile.net/proofs/artist/3c938923-5ed8-4f6b-931f-5794cd9c5c6e.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 0xb1894e4537b20b4f52b6ab23a99ad134d897453231a95ca089f57b58cab09b3a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMAAK1781877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8300efd12c6ff08c5e2618b46935954ed0dd9da66c37990f340ce0b1d89681. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMAAK1781879.
Truckin Goin Down the Road Feeling Bad (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8559ba601ed5919076bfa42eb2eb6b337404769045173e51b1d561bb16fb93. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMAAK1781880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138d6ee5f9965241c04188349ad37837e41e5c1bd115112f4bc998ff272ef5ed. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMAAK1781882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d8eadd5ec5ceee85aed155a34c6fec0a70d072ac46f18c2f68249b827cc369. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QMAAK1781878.
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 0x93fb3b9b9219c0cefd9a9589cb0c4881f6837241fbc120f9dbc937c73ef91c4c. 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/QMAAK1781883.
Mississippi Half-Step Uptown Toodleloo Franklins Tower (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0020d25231917eb3ecd92d7261857601737e51da717a7d91fd56278b5c1b0840. 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/QMAAK1781885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa751c0a42995386991502d32f35e16f18b1593316cef993024f12545f0a687a7. 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/QMAAK1781886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb188e183a7260c4809e18287f369899f190e12ac5dc3b3a75bdc531f25f317c9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USL4Q1979703.
She’ll Be Coming 'round the Mountain - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf0c3ed9793e6a10f646f9bfe3c7acb25ce6e987a52fb72680dd4186cc7eb7f. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/USL4Q1979704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa604d2b4ecb45c3fd7a5ee02328fc5706df13068779d5890193c5afda7e1370d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USL4Q1979707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513206bfba12444dac85b848332975db04cc8b8a893eeb5cb1fd5e5863d1020a. 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/USL4Q1979709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9813a6cfbba05db0d78bbe85b03a97cccdb61d43e49a1ef3e6aec9033214269. 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/USL4Q1979714.
Ain't Gonna Let Nobody Turn Me Around - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3715f03ff2f29013d952d7a191420004a80610d8a41e30e73978d7143ec616ab. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USL4Q1979711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9ae6be951d42dc422c68793d99d9b565ba1ec8ba97c7e3104d7fd105c86ca6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US7VG1607430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42d2824eb281aeb89fd500c3cdfc70195d5d9bbc904bfea3bfd440a1d9c1d30. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US7VG1607433.