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 0x34e168644fb1237333b91d22f8197bd30007481dc9e83f019d014cf091a84b43. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/24252f89-e474-4786-a94e-edb1ccc1171c.json and https://artists.proofprofile.net/proofs/artist/24252f89-e474-4786-a94e-edb1ccc1171c.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Nursery Rhymes and Lullabies for Babies, Infants, Sleep Aid, Baby Lullaby, Naptime, Meditation and Relaxation
White Noise for Meditation, Deep Relaxation, Spa Ambience, Yoga, Insomnia, Soothing Baby Sleep, Nature Sounds, Serenity, Study
Relaxing Classical Music (For Relaxation, Sleep Aid, Study, Yoga, Baby Lullaby, Prayer, Meditation, Spa Ambience, Massage, Travel)
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 0xbb833058d9ef2abf017f5cd2d27f4477198b21976f2f01928321b625a6928b05. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM21592633 — a six-check JSON result.
Sonata No. 14 in C-Sharp Minor Op. 27 No. 2 "Moonlight Sonata": I. Adagio sostenuto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7fc2ef1f186f527dc0c6fe2691cf489bef7f6cec80dac610fe9f5f014916a6. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM21592634 — a six-check JSON result.
Scenes from Childhood, Op. 15: 7. Träumerei (Dreaming)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd214dcd1718b4abbd647ece6c18f9cb5ca4578d7f081e400f63f9376b0e5c224. 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/USHM21592635 — a six-check JSON result.
Orchestral Suite No. 3 in D Major, BWV 1068 "Air On the G String": II. Air
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae50b610ddc01c5bf0821b66d5f16af83de62b4e701dfb644fa4cb96a983109. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/USHM21592636 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b297837933fbb3fab1114ed09a1a31925f13a2fe5f71739964b71301fe0f8ec. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM21592637 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23abb289b3e85f73c190ec365417e5d8ba2102337be811ce7dd95e1359e18db5. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM21592638 — a six-check JSON result.
The Well-Tempered Clavier, BWV 846: Prelude No. 1 in C Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b68ff15ff385d606786d519866ef2aa3b2344149a43cc208ab01be04391dd1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM21592639 — a six-check JSON result.
Scenes from Childhood, Op. 15: 1. Of Foreign Lands and Peoples
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe188a14742707b3bf8b3b4968de90c48d3f0770d04c17a447c3e216a7ec0dbda. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM21592640 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3cea4717d0af50872e94d9bc04746d5e6d9e7ee6998e3af1ba5b4b748460318. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USHM21592641 — a six-check JSON result.
Piano Concerto No. 20 in D Minor, K. 466: II. Romanza
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd854a35ea4a6ed79f635a79ed2c33dc078716c966a2c6f37533e2b53cff1fbe3. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM21592642 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92bc242a734c7302741c2b011df2e847eb566cb571dfd12ec9d56cae387bbf84. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/USHM21592643 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf6dabd2c04b6bedecdc5533547abd2fdff63e52323be15adaff5a2ede14285. 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/USHM21592645 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c76f16450e9f4ec3aec9d1a9f47c0cd328b446d5b79563423cb9db426adf690. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM21592646 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadbe0f4386ed732f4a8a6a7e7c29119d120e5f83120e69c775a7ea3dbc00fc96. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM21592647 — a six-check JSON result.
Consolations, S. 172 3. Lento placido (D-Flat Major)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc145fdadb736e66d3766dcbd1071f7b8f668a448f6ceb6a53edcc509d4cbd1. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/USHM21592648 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c5f4d6a431881bb1f933749f0cbcf80d24512d8240601cde0d3873f0001ebb. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM21592649 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba709073adf2b4cc93fda1ea63d5006525f373eef9b60545a4a91f64b0aa0a55. 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/USHM21592650 — a six-check JSON result.
Mozart for Babies: Calm and Peaceful Classical Lullabies for Baby and Infant Sleep Aid, Relaxation and Nap Time