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 0xbfd20b2f01675269dac33006a5cdfd10486a11dab30779f71ffee5a603d286da. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c97d5162-725b-41bf-88d7-5ec28fb0d260.json and https://artists.proofprofile.net/proofs/artist/c97d5162-725b-41bf-88d7-5ec28fb0d260.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
The Beatles Lullabies 4 (Music-Box Collection with Ocean Sounds)
The Beatles Lullabies 3 (Piano Collection with Ocean Sounds)
The Beatles Lullabies 2 (Piano Collection)
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 0x78250ee753a685b01d86e13ab702615b51b447ea376da2f45538f636d3b1384f. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITK261600029 — a six-check JSON result.
Lullabies For Peace In The World With Ocean Sounds
Brilla Brilla Stellina:Ninne nanne per Bambini e Neonati
Brilla Brilla Stellina: Ninne nanne con il dolce suono del ruscello
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7541843ff3d1a5c596123962f0b4dc9d09002db314175d4bca468fa3e589d6d7. 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/ITK261800395 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81ab6fb755e247f45aec6f2ebcdfc2f3ccdf76c3fe3f2a62f46e504f3cdc7cf. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITK261800396 — a six-check JSON result.
Twinkle Twinkle Little Star With Natural Gentle River Sounds (Lullabies To Put a Baby To Sleep - Sleep Music - Nature Sounds)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa260c9af81965d300a391b5ff8f37d478c32f2f7938a5c979be41bd26f6b1bc2. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITK261800036 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30b0202b534890f788a609c1486be24e3d6f54db996860ac63d87c9efc0820b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITK261800037 — a six-check JSON result.
Baby Lullaby: Classic Romantic Piano Lullabies for Deep Sleep
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09873f3f97ef7d80c2130ec58f19e6a2083e72331df5dd016edca5b66afff982. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITK261900151 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26277f6ea2f57ca12643ef154abf6602e42497bf28f7d722b9c8188843765e6. 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/ITK261900152 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de461f3e18c4e099c4c6b011160547ea2ce51c1661ec8f4ed57eb9363b6c66d. 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/ITK261900154 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b9c29ae66decdc9be267845bbe342e89ef7bc0fced61a1fe0a3916247de97c. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/ITK261900160 — a six-check JSON result.
A Long Night with My Baby with Ocean Sounds
Baby Lullaby: Relaxing Baby Music, Lullabies For Kids, Soothing Baby Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13425a19e5f3ac217e882e394a9b1a85d28d000de260fc9df48641d9a19abe38. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/ITK262000046 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0df63622d81a2171293b12fed14bab4da9b403ff37c6f83a9070dbec4ddb1a. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITK262000047 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb9f5fb398784bff4839be95622d3fb102420f7e8d7fbb9ee8d0670a2f3dc16. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITK262000051 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743253142ba0675ff321ee80803c3559623583f6a1ffdd62169c82bb41cb7114. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITK262000052 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180f36a1f9190cd6bf241b116a7154ddc33155126f735bfa07a239565bf3fef1. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITK262000053 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8431eafa38c63a4ee132d25be992a0fd5fd3ed9bd47a39b5d0cc989440be4143. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITK262000057 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b87778bcf3b340d96b9101458ac66c0c669ad06c4f8543552b50a1ad73793ed. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T05:30:12Z), 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/ITK262000058 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94b9357f7e3f2dadb77f5fc3dfa15d531def00c0681586af672d88ea6d63057. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/ITK262000059 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5cad54185fd834aa63b409b6f5eed427966886e61eb2c4b0cbd2ad13c0885a9. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITK262000060 — a six-check JSON result.
Soothing Baby Music: Baby Sleeping Music For Deep Sleeping
Piano Baby Lullabies and Nursery Rhymes: Baby Lullaby Songs, Baby Music Sleep Time, Soft Baby Lullabies
Nursery Rhymes with Nature Sounds: Piano Lullabies with Ocean Sounds for Baby Sleep
Brahms Lullaby, Op. 9 No. 4 - With Ocean Sounds
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd30d42dec687f5752cf66862e23d29140960534096881c720eda80fb702661. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITK262100770 — a six-check JSON result.
Good Night: Piano Lullabies for Little Baby Sleep
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05cce1eb28e1b338f45c00ae306a9614bac17e3616aa9795d16f6cdb72c93c46. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/ITK262100796 — a six-check JSON result.
Calm Nursery Piano Lullabies: Chillout Music for Baby Sleep
Instrumental Lullabies: Piano Music Nursery Rhymes For Baby Sleep
Lullabies: Soothing Sleeping Music For Babies
Mozart for Baby Sleep: Mozart Guitar Lullabies, Classical Baby Sleep Music
Toddler Lullabies: Soothing Music for Little Baby Sleep
Sweet Bedtime Lullaby: Relaxing Lullabies for Baby Sleep
Mozart For Babies: Eine Kleine Nachtmusik, Minuets and other favorite songs for Sleeping Baby
Peaceful Baby Lullaby: Lullabies for a Sleeping Baby
Newborn Baby Sleep Aid: Lullabies with Ocean Sounds for Sleeping Babies
Baby Sweet Lullabies: Sleeping Piano Lullaby for Children
Sweet Toddler Lullaby: Lullabies for Sleeping Little Baby
Happy Sleep Lullabies with Ocean Sounds: Dreamy Night with my Piano Lullaby
Relaxing Lullabies for my Baby: Calming Baby Lullaby
Goodnight Dear: Baby Lullabies for a Long Sleep
Good Night: Baby Lullabies with Ocean Sounds