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 0x9878764369892fd9c343dc4d79a3d85d37726f401fc9da98d61a6ba1f8b2915f. 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/3f62c227-e87e-479d-92d9-69d9986f7407.json and https://artists.proofprofile.net/proofs/artist/3f62c227-e87e-479d-92d9-69d9986f7407.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Groovin' Through The Modes - Jam Tracks (Remastered)
Groovin' Through The Modes, Vol. 3 - Jam Tracks (2021 Reissue)
Groovin' Through The Modes, Vol. 4 – Jam Tracks (2021 Reissue)
Groovin' Through The Modes, Vol. 2 - Jam Tracks (Remastered)
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 0x9e792869ec7547ad57f5d89bee37ce75ea448b1a18903b4b49f6e55b59c8e81a. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKHF41700501 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e91cfe9ee3b85c9500d8610c82a506e5f18117722752c9e49732fd411742193. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKHF41700502 — a six-check JSON result.
Bossa Nova Jazz Blues Backing Track (Gm)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4734be8cf2085e6a854787cf12cd56d833a5191d11e197bf37e169e2b5fa3a36. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKHF41700503 — a six-check JSON result.
F Jazz Blues Backing Jam Track (Fast Swing)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57179f58758ec7022f6227885275023a86df657fad82ab5c53bf085df6a76c16. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKHF41700504 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7d9d985926bb52dff389b61f32aa0ff271dc9faaf8b3d2366533699786489f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKHF41700508 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc88bff450770983f3c29315037503524e6c20c593ee3f46c2a33666d7aad9a2. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKHF41700510 — a six-check JSON result.
Into The Blues, Vol. 4 - 10 Blues Jam Tracks
Soul Jazz Jam Blues Guitar Backing Track (Gm)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef9855162d47af0ab24d8246640cd6dd63b8a865040df1f7ee1af3641c87e47. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKHF41900203 — a six-check JSON result.
Texas Blues Guitar Backing Jam Track (E)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9df32cc0a6c4ad2eefbf9d597e277bff58dae3c691156f6da2e18215f7483d3. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKHF41900204 — a six-check JSON result.
Bossa Nova Blues Jam Sexy Guitar Backing Track (Em)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d55a5a7d4e2ab5d5655a0f44199a3eee2b03b0e04b83f454567ffe94ef74a61. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DKHF41900209 — a six-check JSON result.
Lo-Fi Blues Jam - Sexy Groove Guitar Backing Track (Gm) [feat. Quist]
Drum Practice Jams - 10 Drumless Backing Tracks
The Sexy Series - 10 Slow Blues Backing Tracks
Groove Time, Vol. 2 – 10 Funky Bass Jam Tracks
Into The Blues, Vol. 5 - 10 Blues Jam Tracks
Groovin' Through The Harmonic Minor Modes
Lockdown Blues Guitar Backing Track (Gm)
Lofi Beat Jam | Slow Drumless Backing Track - 70 BPM (No Drums)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e09daa5c48dfe1746e536e621ad1b7fc97291db4a9ac83a5f532ae38926574. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU9704383 — a six-check JSON result.
Slow & Dirty Funk | Drumless Backing Track - 71 BPM (No Drums)
The Sexy Series, Vol. 2 - 10 Slow Blues Backing Tracks
Into The Blues, Vol. 6 - 10 Blues Jam Tracks
Chill Groove Blues | Jazz Funk Guitar Backing Track - G Minor
Drumless Jazz Funk Backing Track (NO DRUMS)
Jazz Backing Track in Bb - Slow Swing 1-6-2-5
Smooth Groove Bass Backing Track - Trap Style Beat (E)
Smooth Groove Backing Track for Drummers (NO DRUMS)
7/4 Blues Guitar Backing Track - G Minor
The Sexy Series, Vol. 3 - 10 Slow Blues Backing Tracks
Super Slow Blues Jam | Sexy Guitar Backing Track - A Minor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3212505c80e59efbeece1b2acb0429ce2369499aca799573c10f243c8f2fbb1. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX5MY2173155 — a six-check JSON result.
Essential Blues Vamp | Sexy Guitar Backing Track (A)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d71860ebb0b75ced4da0821296d1685559af295540bcf5a57da1738d67ddbc2. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX5MY2173160 — a six-check JSON result.
Sexy Groove Blues Guitar Backing Track - A Minor
Slow Groove Jam | Sexy Guitar Backing Track - C Major
Slow Groove Jam | Sexy Bass Backing Track - E Major
Into The Blues, Vol. 7 - 10 Blues Jam Tracks
G Minor 2-5-1 Groove Jazz Guitar Backing Track
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39248706711f7c9f8e9ac5bfcad6b7519e3f54345cbe9f16921cfa877f178440. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX3HH2278786 — a six-check JSON result.
C Major Jazz Backing Track | Slow Swing 1-6-2-5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936c0c785710f50fc6b2066e73c008064cca39c2b0ec69da743c31696cceb4a6. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX4R52227948 — a six-check JSON result.
G Major Jazz Backing Track | Medium Swing 1-6-2-5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2669894c70b55e7533299fbe87f2ef70e5b3af7b54c02f5229ff7491ac096d8b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX5MY2231229 — a six-check JSON result.
The Sexy Series, Vol. 4 - 10 Slow Blues Backing Tracks
Sweet Groove Blues Guitar Backing Track - A Minor
Slow Blues Guitar Backing Track - B Minor
Slow Blues Guitar Backing Track - E Minor
Slow Blues Guitar Backing Track (D Minor)
Into The Blues, Vol. 8 - 10 Blues Jam Tracks
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbac29d11e7a11fae30a879004d5bade83794c66280dfed66df22a7dde67f9e. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX89G2384244 — a six-check JSON result.
Slow Bluesy Groove Guitar Backing Track (A Minor)
Super Slow Blues Guitar Backing Track (B Minor)
Funky Bass Backing Track (B Minor Blues)
Super Slow Blues Guitar Backing Track (D Minor)
Sweet G Dorian Groove Guitar Backing Track
Sweet Groove Guitar Backing Track - A Minor
Super Slow Blues Guitar Backing Track - E Minor
Sweet Groove Guitar Backing Track - B Minor
Super Slow Blues Guitar Backing Track - C Minor
Sweet Groove Guitar Backing Track - G Minor
Easy Groove Bass Backing Track - C Minor
Sweet Whiskey Blues Guitar Backing Track (G)
Dusty Groove Guitar Backing Track - E Phrygian
Easy Rollin' Blues Guitar Backing Track - B Minor
Easy Groove Bass Backing Track - A Minor
Easy Rollin' Blues Guitar Backing Track - A Minor
Into The Blues, Vol. 9 - 10 Blues Jam Tracks
Epic Groove Bass Backing Track - A Minor
Sweet Bluesy Lofi Guitar Backing Track (A)
Slow Dub Reggae Blues Backing Track - G Minor
Sweet B Dorian Groove Guitar Backing Track
Sweet Whiskey Blues Guitar Backing Track - G Minor
Easy Bossa Nova Guitar Backing Track - A Dorian
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc3aadb0ffa957fa8baa8a065b54db45b5408c680f601791494311eaf44b1ef. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX5MX2423829 — a six-check JSON result.
Sweet Mixolydian Guitar Backing Track (E)
Dub Reggae Blues Backing Track - B Minor
Slow Blues Guitar Backing Track - Eb Minor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4965cae7c5d82071bb86276fe17b55fb6afedfa730463ea17273393a38896589. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZPB12402887 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff4b6533b053b3a8ac1d24a5ae7aef4d93d9240b71e133938186101ce8defac. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZPB12402956 — a six-check JSON result.
Into The Blues, Vol. 10 - 10 Blues Jam Tracks
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20dcc6ae6a027612f8cd6eec6ed830f63203d563b01d6e299f64dbbdf8c6440. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZPB12403814 — a six-check JSON result.
Vintage Soul Guitar Backing Track - A Minor
Soulful Vintage Blues Backing Track (Am)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c39fb7a54eec34659fb0d2e239437bc68f1ef823aca87875adb367f0120727e. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZPB12404092 — a six-check JSON result.
Sweet Groove Guitar Backing Track - E Dorian Mode
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbf002b33ae9ddcd749072259c4e87018a8e086ce3958c98e51fa633121e155. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZPB12404100 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890270c7757139c2a83f2f1daacb60d90f591657a9f7cb2decd4842be87fc546. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZPB12501623 — a six-check JSON result.
Simple Joy Blues Guitar Backing Track (B)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f9c948c92f954ed2b51a4b249ed7a3291a33e75cb84c94761d9226ce73bc0a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX8KD2591686 — a six-check JSON result.
Sweet Allman Brothers Style Guitar Backing Track - E Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a31a581243a229ee9ac9dde0f3a607b426592035abce83b72b2b0edd289cdac. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZPB12500563 — a six-check JSON result.
Soulful Vintage Blues Backing Track - D Minor
Slow Lofi Blues Guitar Backing Track (Am)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf639d2fe315cdf0e32b8daf1e9a7e705304a840ddcda6f21ca2959c9dbc19fb2. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZPB12500764 — a six-check JSON result.
Super Slow Blues Guitar Backing Track (D)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffff96c474353818903790fa2f5aaaf76b54bedb94a632ef71976304e7742ba4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZPB12501205 — a six-check JSON result.
Soulful Vintage Blues Backing Track - G Minor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500976dc6b062404e531510ee516609330848cfea715f6acf6f95c626f791adc. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZPB12501206 — a six-check JSON result.
C Minor Groove Blues Guitar Backing Track Jam
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5aa22b46cb56f4998d5a1d5a15da58d1ed72d724ab3f8888776aad929a4d829. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NZPB12501208 — a six-check JSON result.
Jazz Bass Backing Track - Medium Swing 2-5-1-6 (C)
Groove Time, Vol. 3 - 10 Funky Bass Jam Tracks
B Minor Groove Blues Guitar Backing Track Jam
Sweet Mixolydian Guitar Backing Track Jam (B)
Slow Blues Jam | Freddie King Style Guitar Backing Track (D)
E Minor Groove Blues Guitar Backing Track Jam
Feel-good Vintage Blues Guitar Backing Track Jam (G)