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 0x26ca73f3ff36b2def246949ce258227b5306321bd773e412ca8e4bebdc588659. 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/e02f539c-e752-411d-aa0f-2f481a49db11.json and https://artists.proofprofile.net/proofs/artist/e02f539c-e752-411d-aa0f-2f481a49db11.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Guitar Transcription of Famous Classical Pieces
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 0x898a6c98d4a880b200c30d48b7bba915cee1198bafa3d624b6fc034b6edbb63f. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/ITK261900031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5cb9b24e498a0b9d0b3d9e76c72f3817c6fa14786ddbbcbcea510b796b55fdb. 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/ITK261900033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7be4cfc7dd37cc05a79195ecf741ce2937d96ef2deb17df06f5c8fa730d46e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITK261900035.
Mon cœur s'ouvre à ta voix ( Aria from Samson et Dalila)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x467a9edfb149f12f27996d2d72f74cc2f84fe906607b2aadcb2638af8cd121e3. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ITK261900036.
Guitar Transcription of Famous Classical Pieces With Ocean Sounds
Guitar Transcription of Famous Classical Pieces with Ocean Sounds
Classical Guitar Music: Famous Classical Music for Studying and Concentration
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7404bc7031f3cbd25b01f636534b4d9d60795d5b14e32c715e1c044565ff66b. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:30:28Z), 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/ITK261900478.
Concert Royal No.4 in E minor 5. Sarabande (Très tendrement) - Guitar Transcription
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x563a45f4c06a1ddc24a7f8c449e2b46caca3b656efdc1e1cc7d08f2a72821c40. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ITK261900479.
Jazz Suite No.2 6. Waltz II - Guitar Transcription
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ddbaa9c395d65e17046db832bab732643aef8d5c54e8c85af0c0c1ca4a51983. 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/ITK261900480.
Suite for Lute in E Minor BWV 996 V. Bourrée - Guitar Transcription
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8fcf723f86e408853a3f6005c87542e1bc4865c4530089ef223ae6a3b58d0bb. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/ITK261900483.
Ave Maria Ellens Gesang III D. 839 Op. 52 No. 6 - Guitar Transcription
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1ebebe41c3673745efcfacd8d46aa68256f141df869c0e316c70f166ed6278. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ITK261900486.
Minuet in G major BWV Anh.114 - Guitar Transcription
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0821741ca9212b487befa0dc36fe186c8ee3c0bfc25207bd4fda7e110b6d0e3c. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITK261900487.
Relaxing Guitar Music: Instrumental Guitar Transcriptions with Nature Sounds
Ave Maria Ellens Gesang III D. 839 Op. 52 No. 6 - Guitar Transcription with Ocean Sounds
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81efd94318252e5ec2887145f52a9414ca9a78c9c914e1a053eadb7b56cf8ed. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ITK261900496.
A Blessing in Disguise: A Blues Smooth Jazz Trip
The Red Planet: a Trance AmbientMusical Voyage on Mars
Guitar Transcription of Famous Classical Pieces, Vol. 2
Arabesque L. 66 No. 1 in E Major - Guitar Transcription
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c058568ec5529f8747e32837c2036f947ac03918c93d5a7f5e6dd20e498774. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/ITK262101389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6916f433565027de60b297bae31caac9aa7e721a8119c49aa052cf900ec73361. 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/ITK262101390.
Liebestraum No. 3 in A flat major, Dreams of Love - Guitar Transcription
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0296d81fc1bf2a084f62cefe34db70e7f7dc11b649b69cdd30362f3aa5cd5590. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ITK262101391.
Piano Sonata No. 8 In C Minor, Op. 13: Sonata Pathétique, Adagio cantabile - Guitar Transcription
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6b7ac050ddcabbcd0f06b87211f4cb78693f332bb6a1d261dda891056cb498. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITK262101392.
Nocturne, Op. 9, No. 2 - Guitar Transcription
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e07ce8e746d7ccd9e472a1fc56ddee48d3ba69a7ed6ac8f1a7f5e49357f8532. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ITK262101393.
Prince Igor, Act 2: No. 17, Choral Dance - Guitar Transcription
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ebc95a6105c72b790aaec387381c3bd6d1c1d8396e2c370a369b530a871620. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITK262101394.
Transcription for Classical Guitar with Ocean Waves: Classical Guitar Music for Sleep and Relaxation
Remembering My Father (The Mattress Maker): Jazz Music to Convey Him All my Love
Hidden Reality: Lofi for Study and Positive Thinking
Cello Covers of Popular Pop Songs: Relaxing Instrumental Cello
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f470d0f0f15527b7519a7fbc7af93ead3f398a9263c5b7a2ad8d236d510fb1f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITK262300762.
With or Without You - Cello Transcription
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dcef7c225084a48332957def85a6f882c13d78db4534cf3cf12039732211e11. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITK262300763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae85f092f7645fe77138f96e6f0bf07d51e9b5dcfaddc5b1d63385e6cd60ba16. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITK262300764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa008e1f51eabf625d5ac4cab783651ddb861d54313d713d6a9c1c14fb95ff12c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITK262300765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa072c3b717184e5f953ed7b8bdecf32bd67673d890def2df8c441152e4536ae3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ITK262300766.
The Long and Winding Road - Cello Transcription
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67cf84bf36e54f58e1def0e1a1e52c2f142af87ee828105e6c6347bdaf24781a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ITK262300767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf13a6fc16819b009916793acc28cc5ccefd2cb580ff94dbeb9f068ed0e2381ab. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ITK262300768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4097fd5ebc2e2dbce4f4992ab766968d8d9d47bfdcec6719a7951d07a223892. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ITK262300769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8a60b77435e4406e1a26c88852136ce6ac24c02992cfe17a6e0d642a88cb27. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ITK262300770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4532393c77adac94c7a1a68c3eb5226d713c7505bc81b62b6b458f3cffabb60a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ITK262300771.
Can't Help Falling In Love - Cello Transcription
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c70196b1ebee7d5efd532b57f60827235b48e36d3852e35f6a761ae94bde915. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ITK262300772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94ff73f2932a7da8a659ca38ad442b4a81a4681d1e16de0e7c8af339ee717aa. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITK262300773.
Have You Ever Seen The Rain - Cello Transcription
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8480a388b8e86371d201824d1ad3b93544f6cda7382fdb89bcbedf2f0bf0d7. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITK262300774.
She's leaving home - Cello Transcription
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ef19b5d1afa6c55a6ce791d5fab22018c5e7b222f441299cdb98297e21bfd2. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/ITK262300775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f377543f29f177e8c2e7db3bdfacaa6fa4a0022d3a6e72ea3d93cd3540fdd9. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITK262300776.
Classical Music for Studying DEA Channel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f606002a42967a260a38315557c44fb1af2560321e717164c0b54124e1a334. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/ITK262200137.
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