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 0x8b49ae6064915b1dd5b1943df29643a59ba4be07d99c857bd705e858701066ca. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/09a79dc7-a3e7-41fe-a360-5746792b0422.json and https://artists.proofprofile.net/proofs/artist/09a79dc7-a3e7-41fe-a360-5746792b0422.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Baby Music: Soothing Baby Sleep Music Lullabies and Newborn Sleep Aid
Baby Music: Soothing Baby Lullabies With Ocean Waves for Newborn Sleep Aid and Music for Babies
Baby Music: Soothing Baby Lullaby Music for Babies, Newborn Baby Sleep Aid and Calm Baby Lullabies Baby Sleep Music
Baby Lullaby: Piano Lullabies With Nature Sounds of Ocean Waves for Baby Sleep Aid and Music to Help Your Baby Sleep
Relaxing Baby Lullaby Piano and Ocean Waves
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 0x9450fefb77912c59e0847a1e8681e332f02284ac858cb7d42a53637614e46b86. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ8251709918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71350365921043539af54911042318ff254c824fcac17b2dc232637f7c5f569. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ8251709933.
Baby Lullaby: Soothing Guitar Lullabies Music for Babies, Nursery Rhymes Naptime Music, Calm Newborn Sleep Aid and Relaxing Baby Sleep Music
Baby Music: Soothing Baby Lullaby Sleep Music, Nursery Rhymes Lullabies Music for Babies and Calm Guitar Baby Sleep Aid
Baby Music with Ocean Waves Sounds for Sleep, Baby Lullaby Music for Babies, Baby Sleep Aid and Calm Piano Baby Lullabies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb70e87f6c0acfbc2814803626cf401dbb4e83d6761fb820a8a3eba9767a36b. 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/TCADK1732529.
Baby Music With Rain Sounds for Sleep, Baby Lullaby Music for Babies and Calm Piano Baby Lullabies
Baby Lullaby Music With Rain Sounds For Sleep
Baby Lullabies: Baby Lullaby Music and Calm Piano For Baby Sleep Music
Rain Sounds and Baby Lullabies For Baby Sleep Music, Newborn Sleep Aid and Baby Lullaby Piano Music
Baby Lullabies: Nursery Rhymes and Relaxing Baby Lullaby Music For Deep Sleep
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf341c64e78cea5d0d54f4d99218757e10dc42644455654d49ccbe4b83f7998ea. 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/USLZJ1845935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x917b114132cbeec2db0c2c8046861d75eeb8fcfc730993d595699a1f2e200e58. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/USLZJ1845936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09381e11691645c8de931f64500b02dd21e5c4555a7f18913b552a554eff537. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/USLZJ1845944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29c462ddc29634ebcfb50b2240434a1f106ef3fc1efaa30fc5520d594eac1eb. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USLZJ1845950.
#21 Childrens Rhymes for Long Car Journeys
Baby Music: Baby Lullaby Piano and Rain Sounds For Baby Sleep Music and Newborn Sleep Aid
Baby Lullaby: Classical Piano Music Lullabies, Soothing Sleep Aid and Baby Sleep Music
Classical Baby Music: Relaxing Instrumental Classical Piano and Rain Sounds For Sleep, Baby Lullabies and Nature Sounds Sleep Aid For Baby Sleep Music and Baby Lullaby Naptime Music
Air On A G String - Bach - Baby Lullaby - Classical Piano and Rain Sounds - Baby Sleep Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d24f18fb07d4d0595f74f58cbb0c78c1ab66d21a556d40fbe8bf63b211c207. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ5FN1994270.
Arabesque - Debussy - Baby Lullaby - Classical Piano and Rain Sounds - Baby Sleep Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8a527da37941d8f864a5ac22af44056e4b8dc95529b2ceb9ed7966f7bb8e4f. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ5FN1994271.
Ballade in D major - Brahms - Baby Lullaby - Classical Piano and Rain Sounds - Baby Sleep Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19782e21be9a5b3456f832d3f3d15a57875ed55565865ce61186f4959030e894. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/QZ5FN1994273.
Des Abends - Schumann - Baby Lullaby - Classical Piano and Rain Sounds - Baby Sleep Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4f68aac605157e4d52214f376f86402c2f14a7877d1bc6256d5563c44a1f22. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ5FN1994277.
June, Barcarolle - Tchaikovsky - Baby Lullaby - Classical Piano and Rain Sounds - Baby Sleep Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a98db320e93abac43b6d2a44a32e058e5471d0273519a245e37c6198adfcb2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZ5FN1994280.
Klaviersonate KV-545 - Mozart - Baby Lullaby - Classical Piano and Rain Sounds - Baby Sleep Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ba7511a223cfef726b11ee16c56bb18c2ea457901f1a384349b3308b1036c4. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ5FN1994282.
Nocturne - Chopin - Baby Lullaby - Classical Piano and Rain Sounds - Baby Sleep Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aeb5cfb71cbe6479e27202fdb33acc7fa1f8d942312156df4a00798af752f2f. 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/QZ5FN1994287.
Nocturne in Db - Chopin - Baby Lullaby - Classical Piano and Rain Sounds - Baby Sleep Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4743d304d574ceb4e01770142b131627eaf94115917a7e09e2f65a08ebff7703. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZ5FN1994288.
Pavane Pour Une Infante Défunte - Ravel - Baby Lullaby - Classical Piano and Rain Sounds - Baby Sleep Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1d7115f3cb5874edff3539c233624035c13223aa7df8cc375778e4cb49a898. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:08:49Z), 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/QZ5FN1994291.
Prelude in Db - Chopin - Baby Lullaby - Classical Piano and Rain Sounds - Baby Sleep Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034791f0d29a6e97989ae22d878f0c0fcff2f2b13813315c445fb21228f5b2e8. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZ5FN1994293.
Venetian Gondolas - Mendelssohn - Baby Lullaby - Classical Piano and Rain Sounds - Baby Sleep Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0618b28d3940aa531b83a1d21428e93cbc6cd5e3b1e3c8d30a7a0968461cd8b. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:41:55Z), 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/QZ5FN1994299.
Vocalise, Op.34 - Rachmaninov - Baby Lullaby - Classical Piano and Rain Sounds - Baby Sleep Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82cd3f6aa2c75a7730a5debba589cdbadadbc19247d45e9fde29d3d1281eaa01. 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/QZ5FN1994300.
Baby Sleep Music: Peaceful Baby Lullabies, Baby Lullaby Music and Soft Piano Music For Baby Sleep
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d830bb14a45d30123983ab0c9e8412af25ccfed6876866764d0ec231085075. 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/GBWUL1931401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02752f5b459ef2715a8c0a5904ddb08ad6f858a6d17a090bd213b0ac08afd0db. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBWUL1931406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f469d7efd489ee2620ad2840fa5c6395b4b1f57b55b61af97f33a9e6262fb0. 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/GBWUL1931408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f4463d3dd4e47c67ea2b33d5382a30c4acb4eb818b7f0dfbcba5d8eb64528e. 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/GBWUL1931412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a458831d6d56d1d34d33608181ea3c574a1eea079019c0f092136d7e02a59ff. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/GBWUL1931419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90999e307c38673c2a40f9c794f7266e5d4b9c14618fad356091091afa108d2f. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/GBWUL1931421.
Baby Sleep: Piano and White Noise Sleep Aid For Babies, Baby Lullaby and Soothing Baby Music
Gentle Baby Music: Lullabies for Sleeping Baby Nature Sounds
Baby Music: Peaceful Lullabies for Sleeping Nature Baby
Baby Sleep Music: Sweet Baby Lullabies, Relaxing Baby Music
Sleeping Baby: Gentle Piano Baby Lullabies for Sweet Dreams
Baby Lullaby Music: Background Calm Baby Deep Sleep Music
Baby Lullabies: Gentle Guitar Music for Peaceful Baby Sleep
Baby Music: Relaxing All Night Happy Baby Sleeping Music
Lullaby Time: Sweet Baby Songs and Calm Baby Sleeping Music
Baby Songs: Gentle Lullabies for Sweet Sleeping Baby Dreams
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9861c29d3ccc08da68edc19af37ec0b1fbb14c7054842cfba85d574888f3da. 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/USLZJ2399233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488309f3697c624230d88cbc74efddcbe400e2df3e2a92dbb9aed8ae04fbf8a8. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USLZJ2399418.
Little Dreams: Gentle All Night Baby Lullabies
Endless Lullaby Melodies: Sleep Gently Tonight Sweet Baby
Sleepytime Serenades: Relaxing Lullaby Journeys
Sweet Baby Tones: Loving Lullabies and Gentle Sleep Music
Bedtime Bliss: Gentle Lullabies for Happy Sleeping Babies
Dreamland Serenades: Gentle Lullabies for Sleeping Babies
Lullaby Songs: Gentle Rain and Baby Music to Sleep All Night
Cuddly Lullaby Clouds: Soft Sleep Baby Serenades of Serenity
Lullaby Baby Dreams: Twinkle Heavenly Baby Songs Surrender
Nursery Rhyme Rhythms: Delightful Baby Songs for Newborns
Tender Lullabies: Soft Music to Help Your Baby Drift to Sleep
Calm Nights: Loving Lullabies for a Peaceful Sleep
Heartfelt Lullabies: Cherished Baby Songs For Deep Sleep
Sweet Dreams: Gentle Baby Lullabies for Peaceful Starry Nights
Baby Lullaby: Peaceful Deep Sleep Baby Music Moments
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f9050272f01b6e3950de65104caab00f1d8aa512c73b1d0b1cb8abe5bba8e5. 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/DETL61625738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc139326183270b172894a70b297c33bbcf6fe8051091b62271f8d86f0835bf8e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DETL61625737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610814f7b3e108b5a7b7aaf86fae89d149a103f84ef805b886a84efaea7d0e6b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DETL61625741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e30fb51ce467dce2826646c44940a3dd7030c66bf02530d4d31d4cd2409a62f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DETL61625742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e38a4177598ce8f88ab8539a11cb3ac85372b0ed6b422de9224d5492aaa831. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/DETL61625736.
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 0x2695ae0a53fc0b8a38d15474eaf0483f173838d3c62b62fca0efb8eb4f98a2ec. 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/DETL61625734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e2bd2fe7e4082d8137baa62a958d60adc6a812cad24b074e05ee4443bb93ad. 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/DETL61625740.