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 0xa9c97299790da712e00bcfed225419769b7264df26caceaed7cec8b612852e45. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa7deaf1-acf4-48db-8bae-faed9d101621.json and https://artists.proofprofile.net/proofs/artist/fa7deaf1-acf4-48db-8bae-faed9d101621.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 0x0bf3d71858ed093cde4a3e5c90ad2717f9fa03d94bc13ca1905df5fb5ea5046f. 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/QZAKB2003384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f516624a966cfdbcb039dd6d4065f360c8593a19839046a9665f558986ecfaf. 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/QZAKB2003385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14828fb08f900326eeab5f7f5850f8143ab0284860a2f92c43a9423303cf5e2f. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QZAKB2003386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6501f33a39fc03f69f4c9f275e5564f696d481f004a4652caf1676fa29edece7. 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/QZAKB2003387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5148a84785f0b64c72e45bd2ee085d4ce27711e73904df763166c343a0a94a46. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/QZAKB2003388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd042cb0e8a2cb826f17ecc97a705f856823951011085325063ef0a95469a7da6. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZAKB2003390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8f172ec9105cfba258decd2247bd22dfcfde296f0d03b1986fa786a9aaf045. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:28:15Z), 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/QZAKB2003393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ecb318922169ee95071f26435b407ccc5812d4331b7565c636662bdcf3c703. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:54:19Z), 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/QZAKB2003395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd172cadc8e0ca1f7f4dcb0bdb453c695216e28a9f1ef86df371f1a7b90b992. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:20:26Z), 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/QZAKB2003396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc001e6121d7963027754f10de2398867dd2f8d2c952ff457d453283c4a1b1b8c. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZAKB2003398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82494fd194f20a3235789ba4b2234ef6164cc9de46228d66b8c55b1c507dbdb. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/IDA632204224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c44d2f58d02b771a64956c93486d110631f2b6f081481479e3693bbf3e8296. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IDA632204168.
Music for Concentration: Focus Clarity Beats
Deep Focus Music for Complete Concentration
Ultimate Piano Focus - Deep Study & Concentration for Productivity
Ultimate Focus Jazz - Calming Music for Deep Concentration, Studying, and Productivity Boost
40 Hz Binaural Frequencies for Deep Focus and Enhanced Productivity - Study Music for Concentration and Success
Focus Music: Melodies for Mental Sharpness
40 Hz Binaural Frequencies for Deep Focus and Concentration - Study Sounds for Productivity and Academic Success
30Hz Binaural Focus Music: Deep Study and Concentration Frequencies for Exam Success and Productivity
741 Hz Deep Focus and Study Binaural Beats for Productivity, Concentration, and Mental Clarity
Meditative Groove: Chill Music for Focus
Study Meditation - Deep Focus, Concentration, and Productivity for Success
40 Hz Focus Frequencies for Deep Concentration, Academic Success, and Productivity Boost
30Hz Binaural Beats for Deep Focus, Concentration, Productivity, and Exam Success - Alpha Sinus Waves for Study, Meditation & Peak Performance
Alpha Study Focus - Binaural Beats & Solfeggio Frequencies for Deep Concentration and Exam Success
Deep Focus Beats Music for Unwavering Concentration
40Hz Binaural Focus: Deep Concentration and Productivity Boost
Focus: Work & Study Music for Productivity
Concentration Boost: Relaxing Background Music for Studying and Working
Relax and Concentrate: Chill Focus Tracks
Ocean Focus Vibes: Waves for Productivity
Woodland Focus Vibes Calm and Concentration
Streamside Calm Focus Music for Relaxation
Focus Music: Essential Tracks for Deep Concentration
Deep Focus Rain Sleep: White Noise for Productivity
Focus Music for Productivity: Enhance Your Work
Rain Sleep & Study: Ambient Rain Sleep Sounds for Work
Rain Sleep Focus: Gentle Rain Sleep Sounds for Studying
Rain Sleep for Focus: Soothing Rain Sleep for Concentration
Ultimate Focus Sounds: Music for Better Concentration
Sea Waves Focus: Deep Work & Study Ambience with Ocean Sounds
Focus Music Mix: Energizing Beats for Study
Ocean Waves of Concentration: White Noise for Work
Sea Waves Productivity: Calm Water Sounds for Focus
Focus and Flow: Music for Deep Work Sessions
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0958f144b6626cc77184417f86c8541c5c379571f39641c21cfd22c372e5879a. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPZ2461346.
Flow State with Sea Waves: Relaxing Focus Music
Camp Camp Fire Focus: Cozy Camp Fireplace Sounds for Work & Study
Camp Fireside Productivity: Warm Crackling Camp Camp Fire Sounds
Concentration Boost: Sounds for Maximum Focus
Deep Focus Camp Camp Fire: Ambient Crackling for Concentration
Night BonCamp Fire Study: Relaxing Camp Camp Fire ASMR for Focus
Focus Vibes: Chill Music for Productive Days
Forest Ambience for Work: Enhance Focus with Nature Sounds
Deep Forest Study: Tranquil Nature Sounds for Focus
Mindful Focus: Relaxing Sounds for Concentration
Woodland Concentration: Peaceful Forest Ambience for Work
Whispering Forest Focus: Gentle Nature Sounds for Studying
Creative Focus: Inspiring Music for Your Projects
River soundside Focus: Flowing River sound Sound for Deep Work
Streamside Productivity: River sound Sound White Noise for Study
Daily Focus: Everyday Music for Productive Work
Calm River sound Ambience: Natural River sound Sound for Enhanced Focus
Gentle River Sound Flow: Relaxing Water ASMR for Work
FOREST JAZZ CAFE Easy Listening Jazz for Deep Focus and Study
FOREST JAZZ CAFE Chill Study Music Background Collection
FOREST JAZZ CAFE Relaxing Jazz Café Music for Reading and Focus
FOREST JAZZ CAFE Study Time Jazz - Calm & Relax Background Sounds
FOREST JAZZ CAFE Smooth Focus Jazz for Work and Study Sessions
FOREST JAZZ CAFE Jazz Café Vibes - Background Music to Relax and Read
FOREST JAZZ CAFE Calm Jazz Sounds for Reading and Working Hours
FOREST JAZZ CAFE Soft Jazz Café Music - Study & Relax Playlist
FOREST JAZZ CAFE Relax & Focus Jazz Grooves for Studying
Smooth Jazz Vibes for Focus Music Sessions
Gentle Café Jazz and Focus Music Collection
Chill Study Time with Jazz and Focus Music
Relaxing Jazz Sounds for Focus Music Lovers
Calm Jazz Grooves and Focus Music Playlist
Late Night Jazz & Focus Music for Studying
Concentration Boost: Instrumental Beats for Focus and Productivity
Morning Jazz Essentials with Focus Music
FOREST JAZZ CAFE Focus Jazz Beats for Studying and Working
Comforting Baby Sleep - for Stress Relief
Instrumental Beats by Focus Music for Focus and Productivity
Focus Music Tracks for Concentration Boost and Study Efficiency
Focus Music for Deep Work Sessions and Concentration Boost
Summer Focus Jazz for Study and Productivity
Concentration Boost with Focus Music Instrumentals for Study and Work
Productive Flow Beats with Focus Music for Mental Clarity
Focus and Productivity Soundscapes from Focus Music Sessions
Midday Focus Music for Productive Work Sessions
Focus Jazz Grooves for Productive Afternoons
Chill Café Vibes for Summer Work Sessions
Calm Concentration Music for Bright Work Hours
Workday Focus Flow with Light Jazz Grooves
Smooth Daytime Jazz for Studying and Working
Background Rainfall for Enhanced Mental Clarity
Concentration Boost Playlist with Focus Music for Productivity
FOREST JAZZ CAFE Summer Forest Study Jazz
Focus Music Mix for Office Hours and Clarity
Gentle Crackling Fire and Ocean Breeze Sounds
Study and Work Rhythms with Focus Music Beats
Concentration Boost with River Stream Noise
Relaxing Jazz Lounge for Sunny Work Hours
Intense Focus Music for Work and StudyIntense Focus Music for Work and Study
Light Café Jazz Vibes for Daytime Productivity
Focus Music Background Tracks for Deep Work and Concentration Boost
Summer Calm Focus Music for Deep Thinking
Ambient Campfire and Water Flow for Focus
Concentration Cadence: Focus Music for Clarity
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a1e1f801b27dc55f6c5b6c7cee8085c31b91804b43a9a9be65375cbe0347ca. 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/USLZJ2590848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd78e31906c91601f6e3a793f3e1e9e81e395ba8787a794d0ce8638f790e388e. 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/USLZJ2590857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fe33892fc7854c6634ee614ef0dc4fcefce09865de8a38802763547a573197. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USLZJ2590935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d215eac8bdd92e644881443378d278432bc310ea282aa981ce2fbf50e6c90a. 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/USLZJ2590964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27673ae1d7bd693cf7e9bada539718803f948076163ef526aa81163002825f05. 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/USLZJ2590987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3e5656ed4057efcc6a37e9269f875ce29c18e638b78e4561370191c278e016. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/USLZJ2590866.
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 0xc7770ec0574591ab6545517df6f6eb031bbf7aebb60a0341a06e6129c67ccfbc. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USLZJ2590874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0c85d3c676a45d755876ae044842e4c4b702d7df2698a973a27e49a86eea12. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USLZJ2590883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b0aaaaf0953e6925457aa3108c4e3d5442796db206d9e6b46c410ec5fdfac3. 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/USLZJ2590890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x397b8f7a2719febc92296c1b4d21e9d2e8a507a7c20c0ec21e7c1893d7e97d03. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/USLZJ2590898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844f901fb256cb61750f156ff56d4ffadaac2d65603bee135b25daedacd115c9. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USLZJ2590905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb9ef68f47bab12a9bff7e40dcecfcd03a5a5a7ad883dfdcb018987d73c18c3. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/USLZJ2590913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40250a03bb75f9a751dc7f3de952b4e66a1af1611d571e7e22312531ba45c246. 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/USLZJ2590919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf429f43fe9d427df1b7600ee7af71f2c7f712c87969ba3b6cc04ae60b8f7ffd6. 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/USLZJ2590927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb66bd65982eabf11d7b08b9008b3a23388833fd797f3fadda62917817617e7. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USLZJ2590941.