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 0x181fc6e7ce2bae227ab60ac2362a211ca1187fe6410d80debd48ef81d5a98ab3. Chain 2 (Bitcoin): anchored in block 953746 (2026-06-15T05:25:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a5e918ee-31e3-45b1-8000-ed834b3b7a87.json and https://artists.proofprofile.net/proofs/artist/a5e918ee-31e3-45b1-8000-ed834b3b7a87.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Chilled Background for Unwinding from Work
Jazz Morning Playlist - ChillHop & JazzHop Instrumentals
Music for Depression - Lively Chill Hop Lo Fi
Double Bass Solo (Music for Staying Focused)
Cultured Music for Reading - Electric Piano and Alto Saxophone
Music for Reading - Electric Piano and Alto Saxophone
Hip No Drums Jazz - Bgm for Staying Focused
Terrific No Drums Jazxz - Bgm for Relaxing
Joyful Jazz Piano - Ambiance for Work from Home
Jazz Trio - Background for Preparing Dinner
Ding Dong Merrily on High: Lonely Christmas
Backdrop for Study Time - Bossa Nova Guitar
Brazilian Jazz - Background for Working at Home
Music for Working from Anywhere - Bossa Nova Guitar
Artistic Music for Remote Work - Bossa Nova Guitar
Backdrop for Relaxing Cafes - Trumpet Jazz
Heavenly Music for Coffee Bars - Bossa Nova Vocals
Music for Staying Focused (Trumpet Jazz)
Outstanding Tenor Sax Jazz - Ambiance for Resting
Music for Mental Health Improvement (Trumpet Jazz)
Music for Staying Focused - Trumpet Jazz
Music for Mental Health (Trumpet and Alto Sax)
Music for Wellness - Luxurious Trumpet and Alto Sax
Bartione Sax solo - Ambiance for Coffee To Go
(Trumpet and Alto Saxophone) Music for Chilling Out
Music for Reducing Stress - Hot Trumpet and Alto Sax
Incredible Background for Unwinding Time
Cheerful Bartione Sax solo - Ambiance for Rainy Moods
Luxurious Jazz Trio - Background for Relaxing with Coffee
Bartione Sax solo - Background for Evenings at Home
Jazz Trio - Ambiance for Relaxing with Coffee
Backdrop for Cozy Cafes - Superlative Trumpet and Alto Sax
Lonely Jazz Trio - Ambiance for Friday Night
Carefree Background for Long Study Sessions
Contemporary Music for Hip Restaurants - Trumpet and Alto Sax
Serene Jazz Trio - Ambiance for Hip Restaurants
Trumpet and Alto Saxophone (Music for Work Energy)
Trumpet and Alto Saxophone - Music for Staying Focused
Carefree Music for Cool Restaurants - Trumpet and Alto Sax
Backdrop for Secret Bars - Trumpet and Alto Sax
Backdrop for Studying Moods - Number One Trumpet and Alto Sax
Jazz Trio - Background for Long Study Sessions
(Trumpet and Alto Saxophone) Music for Deluxe Cafes
Spectacular Jazz Trio - Ambiance for Deluxe Cafes
Backdrop for Fine Dining - Fashionable Trumpet and Alto Sax
Smooth Jazz Chill Out - Ambiance for Yuzu Coffee
Astonishing Smooth Jazz Chill Out - Background for Cold Brews
Romantic Smooth Jazz Chill Out - Ambiance for Yuzu Coffee
Backdrop for Morning Lattes - Superlative Chill Out
Stellar Music for Morning Lattes - Chill Out
Backdrop for Organic Coffees - Chill Out
Superlative Background Music for Yuzu Coffees
Inspiring Background for Double Shot Lattes
Classic Music for Morning Vibes - Chill Out
Joyful Smooth Jazz Chill Out - Background for Double Shot Lattes
Music for Nightclubs - Simplistic Sax Jazz
Relaxing Instrumental Background for Breakfast, Lunch & Dinner
Backdrop for Storytelling - Happening No Drums Jazz
Contemporary Music for Taking Notes - No Drums Jazz
Lofi Cafe: A Relaxing Lofi Environment For Your Daily Coffee
Jazz Work Harmony: Coffee Lounge Productivity
Twilight Cityscapes Rhythms: Atmospheric Jazz Music
Jazz Brygd: Doft av Chillhop med Världstoner
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 0x1a371d9211508aada43621bda0833c259e18ab1d6b757e5241aa176a6a1410d5. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/CAWK52521514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe292393af77ff7081e68db8c975d2eafd9424934085f7bc35de2260cf7f3b712. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:06:51Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAWK52521515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2604f762442299a1f510b537554e70ce0233e17e73791f9e3b2c39312c3ee54. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:11:20Z), 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/CAWK52521516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855143f7ffce4b233f59bb95c28ffbaee0cc110c8febb39e048b035120a166fc. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:52:21Z), 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/CAWK52521517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc806d5090e7f467e74acf4020e46fff83fa3cca357a5cd67bec7bb576f25ed8d. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/CAWK52521518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a99ed1314c9442d963fa94b0bc2ad94087e0f5766786277e8388ec06a6594aa. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/CAWK52521519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7664fc86b1a0b68cbf4a2aa08e9e21f84da96028c4eb020bd8d4271c0543fbb. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:11:03Z), 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/CAWK52521520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46667540cd9f2c0093d751b37b34ab9754aae71cf510bb6865b1f696d788962d. Chain 2 (Bitcoin): anchored in block 958882 (2026-07-20T15:37:08Z), 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/CAWK52521521.