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 0x68f80903e13dc6726c8bd40c073bb42d6c60fe30eb0b52fb7062ce54d6ffae3e. 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/82b8d44f-02b5-488a-b556-00720af03550.json and https://artists.proofprofile.net/proofs/artist/82b8d44f-02b5-488a-b556-00720af03550.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 0x81864c8d567d3851316abac4c7c55b5ebf378c0106bf6454b12e23c6d2742320. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BGA471902811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9620d1f0f12b9a5230f2f36e80f90bf277850c30a4d314311260653ec5e5cdf7. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/BGA471912725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb91de54508379ac413e21e3f64d2d1586e64554f4430386b5ee0ad85c8f9a8. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BGA471912726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0d953e9247d50c36f8c39615ac3c7d876746d97023ab0d864f23fab7fc2bf5. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/BGA471912727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8241c4004dafdebda330e933b985743922ef51b2aa568347e97066549ab968. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BGA471912730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03266e029333d369acd0d03c2851d4135d4c54d13f80c659036078ea6ca4fb16. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BGA471912731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd373fecf3b4a4e75c50d511ad035f7a5ee9542f57f62bbda687952142b2022be. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BGA471912732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39cdc2e4e03f39aeac7f0cc9cdcd77171a46e36119a4a882a6ff93924951e267. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BGA471912734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181ff9ad66465cec780807f4867fbab96917780ea2e5082c3cba6b965e6c4f51. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/BGA471912737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec71da4c37722378e501676c4422607ba63105bb397b38a4bf7f9462cc8cef76. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BGA471912738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7231e07a2ee2fede5a0a44bd1b33dcadd50e9ce4fd9e21ad66b26f2677503a. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BGA471912742.
Trio Jazz - Background Music for Chilled Days
Fabulous Background for Working from Cafe
Tenor Sax and Trumpet Solos - Music for Working from Cafe
Music for Cafe Focus - Opulent Trumpet Jazz
Breathtaking Music for Club Lounging - Trumpet Solo
Music for Midweek Escapes (Trumpet, Electric Piano, Alto Sax and Soprano Sax)
Scintillating Backdrop for Friday Dining
Smart Clarinet Solo - Background for Exclusive Restaurants
Entertaining Trumpet Smooth Jazz - Ambiance for Weekday Getaways
Music for Recharging Breaks - Hip Trumpet, Electric Piano, Alto Sax and Soprano Sax
Lonely Background for Morning Inspiration
Trumpet Solo - Ambiance for Coffee and Brunch
Vintage Trumpet Solo - Ambiance for Coffee and Brunch
Music for Breakfast Diners - Divine No Drums Jazz
Jazz Guitar Solo - Bgm for Good Memories
Big Band with Tenor Sax - Bgm for Starting the Day Off
Big Band Ballad with Vibraphone - Ambiance for Morning Sunrise
Big Band Ballad with Vibraphone - Ambiance for Morning Inspiration
Sumptuous Ambiance for Morning Inspiration
Trumpet Solo - Ambiance for Sweet Mornings
Deluxe Trumpet Solo - Ambiance for Brunch Meetups
Big Band with Tenor Sax - Background Music for Lounge Bars
Jazz Guitar Solo - Background Music for Classy Hotels
Music for Breakfast Diners - No Drums Jazz
Sumptuous Music for Hotel Brunches - No Drums Jazz
Jazz Guitar Solo - Background Music for Lobby Cafes
Fun Trumpet Solo - Background for Orange Espressos
Excellent Ambiance for Classic Cocktails
Music for Orange Espressos - No Drums Jazz
Cultured Trumpet Solo - Ambiance for Room Service Coffee
Backdrop for Classy Hotels - No Drums Jazz
Music for Secret Bars - Remarkable Trumpet and Alto Sax
Fashionable Background Music for Back to Work
Music for Secret Bars - Trumpet and Alto Sax
Backdrop for Secret Bars - Astonishing Trumpet and Alto Sax
Vibrant Background Music for Back to Work
Opulent Background Music for Morning Coffee Trips
Contemporary Ambiance for Lunch Break Coffee
Heavenly Background for Morning Coffee Trips
Tremendous Backdrop for Wellness Vacations
(Trumpet and Alto Saxophone) Music for Midweek Workcations
Fabulous Music for Midweek Staycations - Chill Out
Backdrop for Long Weekend Getaways - Chill Out
Scintillating Smooth Jazz Chill Out - Background for Weekend Holidays
(Jazz with Strings) Music for Meal Satisfaction
Backdrop for Long Weekend Getaways - Fun Chill Out
Excellent Quintet Jazz - Bgm for Jazz Clubs
Jazz Guitar - Ambiance for Fashionable Eateries
Vibrant Ambiance for Midweek Staycations
Music for Classy Resorts - Awesome Trumpet and Alto Sax
Jazz Ballad - Bgm for Spring Break Trips
Groovy Piano Jazz - Background for Spring Break Trips
Bright Trio Jazz - Bgm for Fine Dining at Hotels
Jazz Trio - Ambiance for Fine Dining at Hotels
Jazz Ballad - Background Music for Quick Holidays
Magnificent Piano Jazz - Ambiance for Fun Vacations
Inspiring Music for Fine Dining at Hotels - Trumpet and Alto Sax
Unique Jazz Trio - Ambiance for Evening Drinks
Wondrous Bebop - Background for Seasonal Vibrations
Music for Rejuvenating Creativity - No Drums Jazz
Jazz Guitar Solo - Background Music for Spring Sun
Jazz Guitar Solo - Bgm for Inspiring Ideas
Majestic Latin Big Band - Ambiance for April Goals
Music for Springtime Feelings - Big Band Ballad with Guitar
Trumpet Solo - Background for Quiet Day Moods
Trumpet Solo - Ambiance for Trigerring Inspiration
Bubbly Cuban Big Band - Bgm for Spring Stories
Mind-blowing Piano Jazz - Ambiance for Tokyo Clubs
Backdrop for Spring Days - Big Band Ballad with Guitar
Music for Late Spring (Big Band Ballad with Guitar)
Jazz Ballad - Background Music for Tokyo Jazz Bars
Trumpet Solo - Background for New Creativity
Music for Spring Fresh - Big Band Ballad with Guitar
Fashionable Background for Simple Reflections
Smoky Ambiance for Rejuvenating Creativity
Beautiful Trumpet Solo - Ambiance for New Creativity
(Piano Solo) Music for Thursday Evenings
Majestic Big Band Ballad with Vibraphone - Background for Spring Days
Ambiance for Refreshing Coffee Beverages
Music for Study and Sleep (Vibraphone and Tenor Saxophone)
Jazz Quartet - Ambiance for Ultra Fresh Coffee
(Big Band Jazz Ballad) Music for Happy Spring Moments
Jazz Quartet - Ambiance for Coffee and Study Moods
Stylish Music for Study and Sleep - Vibraphone and Tenor Saxophone
Lively Jazz Quartet - Background for Refreshing Coffee Beverages
Trumpet and Alto Saxophone (Music for Work and Study)
Music for Study Focus (Trumpet and Alto Sax)
Music for Aesthetic Vibes - Stellar Big Band Ballad with Guitar
Terrific Ambiance for Boutique Coffee Roasters
Luxurious Music for Fresh Java Spots - Trumpet, Electric Piano, Alto Sax and Soprano Sax
Smooth Jazz Sax - Music for LA Coffee Clubs
Quartet Jazz - Ambiance for Jazz Bars and Lounges
Excellent Piano Jazz - Background for Night Time Coffee
Divine Piano Jazz - Background for Jolting Coffee
Music for Yesterdays Dreams - Trumpet, Soprano Sax, Tenor Sax and Guitar
(Soprano Sax Solo) Music for Relaxing Jazz Nights
Dream Like Background for Chill Imaginations
Music for Early Summer Changes - Trumpet, Electric Piano, Alto Sax and Soprano Sax
Music for Lazy Thursday (Soprano Sax Solo)
Music for Work with Coffees - Modish Sax Jazz
Trumpet Smooth Jazz - Background for Vacations in May
Music for Calming Night (Soprano Sax Solo)
Music for Inspiring May - Trumpet, Electric Piano, Alto Sax and Soprano Sax
Quartet Jazz - Background for Slacking Off Sundays
Backdrop for Fun Dreamscapes - Superlative Jazz Guitar Solo
Backdrop for Fun Dreamscapes - Jazz Guitar Solo
(Soprano Sax Solo) Music for Chillout June
Soprano Sax Solo (Music for Summer and Relax)
Music for Summer and Relax - Modish Jazz Guitar Solo
Superlative Quartet Jazz - Background for Summer Love
Music for Peak Jazz Academies - Jazz Quintet
Quintet Jazz - Music for Wonderful Overtones
Backdrop for Wonderful Imagination - Jazz Quintet
Tenor Sax Solo - Music for Jazz and Chill
Smooth Music for Wonderful Imagination - Jazz Quintet
Music for Soft Melodies (Trumpet, Soprano Sax, Tenor Sax and Guitar)
Music for Classic Coffee Drinks (Jazz Quartet)
Music for Energizing Coffee Beverages - Latin Music
Elegant Music for Easy Summer - Jazz Quintet
Incredible Quartet Jazz - Background for Sunday Morning Relaxings
Jazz Organ - Background Music for Summer Blues
Music for Pure Daydreamers (Jazz Quintet)
Tenor Sax Solo (Music for Summer Delight)
Jazz Violin - Background for Quiet in July
(Tenor Sax Solo) Music for Summer Delight
Happening Trumpet Bossa - Ambiance for Mind Hours
Guitar Bossa Nova (Music for Calm Reflections)
Backdrop for Coffee and Mental Health - Trumpet, Soprano Sax, Tenor Sax and Guitar
Sprightly Jazz Trio - Background for Deep Summers
Jazz Organ and Guitar Solo - Music for Complete Resting
Music for Deep Summers - Jazz Organ and Guitar
Trumpet Bossa - Background for Coffee and Mental Health
(Guitar Bossa Nova) Music for Morning Wellness Coffee
Trumpet Bossa - Ambiance for Staying Cool
Trumpet Bossa - Background for Excellent Summer
Music for August Moods - Trumpet, Soprano Sax, Tenor Sax and Guitar
Backdrop for Fall Vacation - Chilled Jazz Organ and Guitar
Mind-blowing Acoustic Smooth Jazz Guitar - Ambiance for Coffee Relax Zones
Scintillating Acoustic Smooth Jazz Guitar - Ambiance for Loving Autumn
Background Music for Last Minute Holidays
Swanky Acoustic Smooth Jazz Guitar - Ambiance for Forgetting Time
Glorious Trio Jazz - Bgm for Autumn Beginning
Jazz Trio - Background for Casual Summer Moment
Warm Trio Jazz - Bgm for Casual Summer Moment
Music for Casual Summer Moment - Jazz Organ and Guitar
Tasteful Music for Fun in Summer - Jazz Organ and Guitar
Hip Music for Awakened Starlights - Jazz Guitar Solo
Modern Quartet Jazz - Ambiance for Awakened Starlights
Subdued Music for Dusk Lights - Jazz Guitar Solo
Backdrop for Completely Present - Jazz Guitar Solo
Quartet Jazz - Ambiance for Mystical Sounds
Jazz Quartet - Background Music for Easy Vibes
Quartet Jazz - Ambiance for Quiet Loungers
Backdrop for Decompressing and Coffee - Fabulous Jazz Guitar Solo
Music for Acoustic Silence - Opulent Jazz Guitar Solo
Quartet Jazz - Background for Lush Acoustic
Quartet Jazz - Background for Acoustic Silence
Backdrop for Deep Realities - Latin Music
Organic Guitar Music - Ambiance for Calming Down Lounges
Scintillating Organic Guitar Music - Ambiance for Autumn Night Drives
Backdrop for Another Chill Evening - Acoustic Guitars
Latin Trumpet - Ambiance for Bright Stars
Backdrop for Fall Positive - Jazz Quintet
Music for Night Spirits (Acoustic Guitars)
Backdrop for Fall Cleansing - Jazz Quintet
Organic Guitar Music - Background for Mellow Recliners
Latin Trumpet - Ambiance for Autumns Spirits
Distinguished Music for October Clarity - Jazz Quintet
Backdrop for Mind Soothing Fall - Elegant Trumpet, Soprano Sax, Tenor Sax and Guitar
Tenor Sax Solo (Music for Accepted Hope)
Trumpet Bossa - Ambiance for Mind Soothing Fall
Vintage Music for Discovering Passion - Soprano Sax Solo
Opulent Ambiance for Respectful Flashbacks
Trumpet Bossa - Ambiance for New Experiences
(Guitar Bossa Nova) Music for Healing Octobers
Fashionable Quartet Jazz - Ambiance for Accepted Hope
Trumpet Bossa - Background for Mind Soothing Fall
Music for Stress Managing - Trumpet, Soprano Sax, Tenor Sax and Guitar
Music for Crazy Solution - Extraordinary Jazz Quintet
Sumptuous Tenor Sax Jazz - Background for Delightful Time
Brilliant Music for Painful Blues - Jazz Quintet
Music for Higher Tones - Wonderful Bossa Guitar Trio
Bubbly Jazz Violin - Background for Perfect Energy
Jazz Violin - Background for Beautiful Illusions
Backdrop for Best Horizons - Grand Bossa Guitar Trio
Guitar Trio - Background for Morning Pictures
Delightful Music for Life Lists - Jazz Quintet
Music for Morning Pictures (Bossa Guitar Trio)
Backdrop for Morning Pictures - Hip Bossa Guitar Trio
Smooth Jazz Guitar - Bgm for Accepting Pictures
Acoustic Smooth Jazz Guitar - Background for Brave Acoustics
Music for Upbeat Winter - Harmonica Solo
Lonely Music for Upbeat Winter - Harmonica Solo
Simplistic Easy Listening Piano - Background for Adventurous Ideas
Guitar Solo (Music for Accepting Pictures)
Music for Tropical Joys - Soprano Sax Solo
(Tenor Sax Solo) Music for On Cloud Nine
Backdrop for Jolly Victory - Dashing Soprano Sax Solo
Fantastic Quartet Jazz - Background for Tropical Joys
Background Music for Coffee House Winters
Stellar Latin Trumpet - Ambiance for Sleepy Winter Nights
Festive Music for Breezy Winter Feels - Jazz Organ and Guitar
Music for Calming Lounges - Piano Bossa Nova Duo
Amazing Piano Jazz Duo - Background for Private Moment
Music for Late Coffee - Exciting Piano Bossa Nova Duo
Cultivated Music for January Surprises - Piano Duo
Jazz Piano Duo - Music for Sunny Morning
Music for Easy Resolutions - Lovely Piano Duo
Trio Jazz - Background for Lazy Chill Peace
Backdrop for Cooling Oceans - Spectacular Alto Sax
Breathtaking Piano Duo and Alto Saxophone - Bgm for Mellowing Fridays
Breathtaking Background for Relaxing Intros
Mysterious Music for Colorful Unwinding - Jazz Quintet
Guitar Jazz - Ambiance for Smooth Escapes
集中するためのリラクゼーション音楽
Music for Vibrant Reflections - Jazz Quintet
Music for Losing Nostalgia (Jazz Quintet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ad9e58eb2260e9a81062c047330ac43283180fc40431de27753674fc245093. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX282305898.
究極のジャズ：ナイト・エディション
Deluxe Jazz Trio - Ambiance for Simple Rest
Underground Vibes Pulse: Dynamic Jazz Music
The Land of Honey - Sweet Sultry Solos of Jazz and Blues
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3bf073f4c7561fe3ca5007c4ccc21bfa5a2d19ccb0c3952fbfa41791b1a654e. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAR42571963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c20f2944dff490e74cde3ee86932ef690c46ea3b12fb7febea335b127198702. 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/QZP7F2412741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497b252ad366782da366fe9bd0308e8f4b63b20ba2909c590e1865f621fff89a. 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/QZP7F2412745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05fc4203499efebf64e7d426a8fe3e0bb63602d548db944f8ead20df4899fb48. 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/QZP7F2411980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9f568441d06349c08d3b98b7f64502a1cc57cd72b0efdd365b94a8413e7aa9. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/QZP7F2412737.
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 0x9ee5a43a57a140b02c5f1612acf12abb7959de0ff580c5528307727b00d63a2d. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZP7F2412738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2469bcecabfb3af400ddf7a1878d5776f1272d1c16685a81ca6677822292e04d. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZP7F2412740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349f772dfa46df357adbea3092d68a31372a8d06733061921439721f78788250. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZP7F2412742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792675e1d031f289b4e90432a98002bef75abced659750de5bbc159ed5303310. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZP7F2412743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa381cfed5bb0116aa6be49fcd3edcde7416fc2643e6abc4809ce4f2b9b569fed. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZP7F2412744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5803dbc11dcaf8a7ab6bf6e1a1fd9835f8c8a396472b9eadbe5fb6e31ebcfc. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZP7F2412746.