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 0x007d494a9f7cffb1fedfb339a546741d4d4cc820dd48511b3feaac0f971cc124. Chain 2 (Bitcoin): anchored in block 953695 (2026-06-14T21:42:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/723a7a0e-101b-4515-8ae5-d016219ec3cb.json and https://artists.proofprofile.net/proofs/artist/723a7a0e-101b-4515-8ae5-d016219ec3cb.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
New Orleans Jazz Cafe – Smooth Jazz Music for Relaxation, Rest After Work, Stress Relief, Good Mood, Meet Friends, Piano Bar Music Collection, Workout Plans, Relax Time, Positive Attitude, Jazz Songs
Blue Mood Jazz – Best Instrumental Background Music, Leisure & Relax, De-stress & Good Vibes, Easy Listening, Bar Café Pub Restaurant Songs
Jazzy Lounge: Piano Solo – Best Instrumental Background Music for Bar Café Pub Restaurant, Destress & Good Vibes Piano Songs
Bossa Jazz - Blue Jazz Music, Piano Bar Jazz, Relaxing Jazz Sounds
Cool Piano Jazz - Calming Piano Sounds, Soft Piano, Relaxing Jazz, Chilled Jazz, Lounge Jazz, Smooth Background Jazz, Jazz Music
Peaceful Piano Jazz Music – Beautiful Piano Jazz Music, Slow & Soft Mellow Jazz, Smooth Jazz Music, Calming Sounds for Relaxation, Background Sounds to Calm Down
Saturday Night - Most Relaxing Music to Relieve Stress, Close Your Eyes, Cafe Jazz, Simple and Beautiful, Jazz Sounds for Restaurant
Jazz Club – Black Coffee, Smooth Piano Bar Music, Sweet Piano Jazz Music
Jazz Piano Ambient – Ambient Chill Jazz, Soothing Jazz, Instrumental Background for Relaxation
Sexy Jazz in the City: Best Smooth Piano & Sax, Cafe Bar Music Collection, Evening Lounge Relaxing Music
Cocktail Party Jazz – Jazz Party, Piano Sounds, Background Music to Relax, Friday Beautiful Moments
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 0x983e662a7643d15c3c7c3b96c25d68da49774aa1fd8771cfc55773558228c3bf. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/PLL435010994 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9abfdc33bf71305012908110ea0f17c4a803875db59ffaae9700ec09409952. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLL435010995 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43305759916a40e33d8f5f6003d7ce38f65093694554572500312042c3f2eae. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLL435010996 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcdb8474d64db505fe70b01cc83fce5f15e3b25953197deb9a6ee77d607b1521. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/PLL435010997 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67caa81e4f2bdea6fccbc71677f74a4259675ce12a8c2f97918d9c97e7641b6. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T13:04:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PLL435010998 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3fd22ac386dd3650086ce51893b7bd51fdbc4d9f3aa957ca1bfc3f3384b834. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/PLL435010999 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf71b5bfea9b9de1b4caa72fbdc77e66e136973d2d1af02e5b9c190b212584c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/PLL435011000 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd7a9d1d5f7adcdb12ae39e8a0c12791692acbfe02d81951406fd602ae3afac. 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/PLL435011001 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e3d703d9a5db573eb8713fc94350efc82d64b9dfdecf069b6ac7cc94d6c855. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/PLL435011002 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1c5408b634cd92a4db409832405d1baccd9c23c5c0512a3c04a515dac43f9b. 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/PLL435011003 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52fc5630e76c4cdb6c6a21cc2baa5bc7c3c5bf53a47b3f462db942d23213b2a9. 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/PLL435011004 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7798d5b7ece79017ba225c40d05b303c6e3a5d93f44aaeb979dc62fc1b01da8. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/PLL435011005 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8a622efa4a4a8c6a836e948073cc45ba0ec29d05236d191390b244be1d882b. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/PLL435011006 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff14ebbb173f789016c64574925cdf2344952c9503267a3a232ed0719998d5f. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/PLL435011007 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4b5f66a6021a8bf4ad7ca07623e97d11a653b7dccf29e02b58ba0e9f89fe2d. 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/PLL435011008 — a six-check JSON result.
Lounge Jazz Bar – Drink Bar and Jazz Music, Favourite Jazz Sounds
Jazzy Jazzy Lady: Smooth Summer Jazz Session, Pure Sexy Instrumental Classics, Piano Lounge Bar
Ambient Piano – Best Soothing Piano Jazz, Guitar Collections, Smooth Music, Jazz Relaxation
Easy Listening Guitar Jazz – Smooth Guitar, Chilled Jazz, Mellow Piano, Soft Sounds, Restaurant Music
Night Piano Shades – Smooth Piano, Jazz Night, Beautiful Evening, Calming Jazz, Blue Moon
Evening with Piano Jazz – Smooth Jazz, Sensual Piano Sounds, Jazz Vibes, Vintage Music, Rest a Bit
Easy Listening Jazz Music – Smooth Jazz, Piano Bar, Restaurant Piano, Shades of Relaxation
Liquid Piano Atmosphere: Beautiful Jazz Music for Wine Tasting, Piano Bar Cocktail Lounge, Elegant Dinner Party, Romantic Classical Restaurant Cafe
Under the Blue Blanket – Soft Music, Rhythm Sleep, Cool for Fall Asleep, Blue World of Dreams
Jazz Swagger: American Funky Jazz, Cafe Bar, Lounge Background Music
Elegant Jazz Party – Beautiful Instrumental Sounds for Dinner, Romantic Evening, Cocktail Party & Any Elegant Occasions
Tranquil Jazz for Bedtime (Soft Piano Notes to Relax & Sleep - Calming Music for Total Relaxation)
Night Ibiza Jazz Lounge Club (Summer Jazz 2017 Collection, Cool Instrumental Songs for Party All Night Long, Easy Listening Music for Relaxation)
Chill Piano Lounge: Moody Piano Rhythms, Relaxing Time, Elegant Place
Relaxing Piano with Nature: Most Calming and Beautiful Piano Accompanied by the Nature for Sleep, Study, Meditation
Magical Piano Perfection (Relaxing Rhythms for All Day)
Soft Piano for Dreaming: Soothing Music to Fall Asleep & Relaxation
Piano bar de luxe jazz: Musique apaisante pour café-bar, Restaurant, Humeur calme
Good Feeling with Smooth Jazz Piano: Mellow & Soothing Music
Relaxing Jazz Music - Instrumental Time for Meditation
Fascinating Piano for Expensive Restaurant
Piano Sleeping Time - Deep Jazz Melody for Rest and Relax After Long Day
Soft Piano Music for Studying Concentration: Peaceful Piano before Exams, Study Music, Relax
BGM Piano Jazz with Rain: Piano Jazz Bar
Αστικός πιάνο μπαρ άλμπουμ 2021: Αστικός κιθάρα για δουλειά από καφετέρια, Μυαλό nου χαλαρώστε τζαζ, Βελτιώστε την καθημερινή σας εργασία, Δημιουργικό πράγμα και εύκολη εργασία
Μαλακό πιάνο για ύπνο: Μουσική μασάζ πιάνου, Φθινοπωρινή απόλυτη συλλογή πιάνου από διαχρονικές μελωδίες για απόλυτη χαλάρωση, Χαλαρωτική μουσική πιάνου για ύπνο και ηρεμία
Beautiful Piano Lounge: Soft, Emotional and Touching Piano Pieces for Studying, Reading and Relaxation
Magical Piano Night - Nice Evening with Piano Jazz Music, Romance and Sensual Piano, Soft Instrumental Background Music
Autumn Bliss: Relaxing Collection of Autumnal Piano Jazz
Autumn in New York: Jazz Piano Bar Music, Background Instrumental
Winter Romantic Nights: Intimate Instrumental Piano
Comfortable Piano Jazz for Cold Winter Day: Soft Pleasant Piano Music
Times I Have Forgotten: Childhood Memories, Old Days
Nostalgic Piano Songs: Instrumental Piano Jazz, Calm Sad Sounds
Coffee Table Jazz: Classy Retro Cafe and Lovely Background Music
Sunny Autumn Piano: Peaceful Soothing Piano Jazz Instrumental Music to Keep Positive Mood
Feel Good Piano: Happy Autumn Morning Jazz Cafe
Nostalgic Fall: Atmospheric Piano Pieces for Cozy Bedroom With a Rainy Night
London Antiques Fair: Old Library Piano Jazz, Bookshop Autumn Atmosphere
Rekindling Love for Life: Jazzy Instrumentals to Evoke Emotions
Cozy Piano & Rain: Calm Piano Lounge and Nature Sounds for Relaxing,Chilling
Midnight Melancholy: Relaxing Piano Bar Playlist
Midnight Melancholia: Piano Lounge Poetry
Midnight Not Sleeping – Nostalgic Piano Pieces
Illusions of Reality (A Dreamlike Escape)
Softly Into Dusk: Falling Flowers, Falling Notes