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 0x08afbce2c6b18689a7fe580212eb8cc48dc885ffc382530c42ce048abc2bf85f. Chain 2 (Bitcoin): anchored in block 953645 (2026-06-14T14:31:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3e929fc7-ef81-4d7e-9c0c-e69e40d6cc65.json and https://artists.proofprofile.net/proofs/artist/3e929fc7-ef81-4d7e-9c0c-e69e40d6cc65.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Time for Focus: Calming Music to Enhance Development (Bright Mind Kids), Vol. 3
Goodnight Baby: Soothing Music for a Peaceful Sleep (Bright Mind Kids), Vol. 3
Sound Sleep Series: Goodnight Little One (Clever Kids Collection), Vol. 3
Wolfgang Amadeus Mozart / Piano Sonata in A Major, K. 551: III. Alla turca (Allegreto)
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 0xcdda7e8d04097e9fe4fe49f4914b9eaee55ab304c20ff307ad92edd5089ac068. 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/US2BB1300022.
Robert Alexander Schumann / Kinderszenen ('Scenes from Childhood'), Op. 15: No. 7 Träumerei (Dreaming)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eebd5e8cd8429d72c6dde1d47e7cfa384879d045f09953d9e5cdf91393f713d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US2BB1300023.
Frédéric Chopin / Scherzo No. 4 in E Major, Op. 54
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fec0f235f7b1490249421fe70a84aa5b9f3d95896dcf8d7dae2754f8da9c207. 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/US2BB1300028.
Antonín Dvorák / Symphony No. 9 in E Minor, 'From the New World', Op. 95: III. Scherzo - Molto vivace (Poco sostenuto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b84ab9642e9cd127ce293f08c9c46436e9af0bc04998f3ace516a2487c9c39b. 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/US2BB1300030.
Wolfgang Amadeus Mozart / Oboe Concerto in C Major, K. 314: II. Adagio non troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd660c2737e6eff6c68337381dca9bc14ae4d1b2d4b17d32f55b8ae3faa50a1. 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/US2BB1300031.
Johann Sebastian Bach / Cello Suite No. 1 in G Major, BWV 1007: IV. Sarabande
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922bc183252a48627b8325768ee3a5c25f41bbb65e03f997b4c4d6e01124a28b. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T15:41:47Z), 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/US2BB1300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e6b8ab7478a847f7c8a8453d7b397a875afea09ddaf531301b33ddfff454d0. 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/US4R30746706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb795cb0848ec36d13b9b3bb2de1199b43e00ef34d9e7c99c93536924902d48. 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/US4R30746475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x321d739eda25e358365f06834d02a314b50e232f49a83d7e3151dc560ea0b848. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:27:51Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R30746476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3056089cab24b9215d65e3b0e5f0de708444d29d45c6a9b4b92ca8b742ec4bb. 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/US4R30746477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f01fa5e2f204cffbdf04e56a4499c441c8d04cc6e2a2305563ee80c6104f2a1. 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/US4R30746478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c96f696da28aee1132428b6223aa11de64cdfb43ec4e612f6f103a58cebe21. 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/US4R30746479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf11f80314ae3c1521b2a5ce34c91f6d9fc0092742ab90884d3a66f94567cea. 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/US4R30746480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1af24bcaabe7c826101c2d965f5743a12537ed81ccbff18924df6d53b5b746. 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/US4R30746481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4fbb22a286fc40777d4831a91c6d1db0a8dc8af5eec5536d9c88d81d1506ce. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4R30746482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9ead8415bd690f11ed25e218dcd990cc9e8daa0cae848cd904eec7a41b02ec. 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/US4R30746483.
Meritage Relaxation: Calming Ocean, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f486856120f0c2c3f72bd39943345210e896386294583ae5cf6bed3d6aa31a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US3L61115012.
Relaxation: Classical Music for Calming Baby & Parents (Bright Mind Kids), Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3999560d4ffc4b9c8ab5e019c81533c17c5b42ea885bed684e0bbb0eb0b05be4. 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/US3L61210386.
Loving Bond: Relaxing Piano Music for Baby & Parents, Vol. 5
Harmony: Piano Music for Calming Baby & Parents (Bright Mind Kids), Vol. 5
The Nature Relaxation Collection - On the Shore / Soothing Music and Nature Sounds
Loving Bond: Relaxing Piano Music for Baby & Parents, Vol. 1
The Nature Relaxation Collection - The Sea / Soothing Music and Nature Sounds
The Nature Relaxation Collection - Dusk to Dawn / Soothing Music and Nature Sounds
Harmony: Piano Music for Calming Baby & Parents (Bright Mind Kids), Vol. 4
Meritage Relaxation: Calming Ocean, Vol. 2
Bonding Music for Parents & Baby (Classical) : Prenatal Through Infancy [Loving Link] , Vol. 1
Smarty Pants Playtime Fun: Classical Music for Baby (Bright Mind Kids), Vol. 1
Bonding Music for Parents & Baby (Classical): Prenatal Through Infancy [Loving Link] , Vol. 4
Harmony: Piano Music for Calming Baby & Parents (Bright Mind Kids), Vol. 1
Loving Bond: Calming Classical Music for Baby & Parents, Vol. 1
Loving Bond: Relaxing Piano Music for Baby & Parents, Vol. 2