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 0x24d34784597309e8c61bcc7bd25236f782e805ead0229efa13efddd9981f6f79. 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/f33a70a1-d153-4601-95db-bbc81e539d1d.json and https://artists.proofprofile.net/proofs/artist/f33a70a1-d153-4601-95db-bbc81e539d1d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Baby Sleep Lullabies Vol. 1: Gentle Music for Sleeping Babies, Relaxation, Infant Sleep Aid, Lullaby, Toddler Bedtime, Insomnia, Meditation, Nursery Rhymes
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 0x8fdf2359d3919bc3a17b3153d944b89405ca2c6f9c64a95de16c97f002f36978. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGH1658961.
Lullaby, Op. 49, No. 4 (Brahms' Lullaby)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25daea069c86634079f5b0f4f2c5cccba3a35da4ee82187b29113da49c82d350. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USCGH1658962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50adc0142c7e2cae27c791b3586693e17c995614dc4642c3bb812cbe46294dda. 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/USCGH1658963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6cd5c643448f6a79ad56fc0c46050516259b641fb10916750c50cd9414649c2. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USCGH1658964.
Anna Magdalena Notebook BWV 114: Minuet in G
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7bdcb38912d70ec52422684a5034083618701e439f7ad69da5012c4188c149. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USCGH1658965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31fb2fa9961dbf3be7a61eb5ea673375a8bbcaeb4d96c9d32cc7b1355d45544a. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/USCGH1658966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2ad7a6208ac537ce2e07a97f98d10ec88d6f6b4f1c7c94c641ecf2d8b56ec3. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:42:34Z), 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/USCGH1658967.
Trois Gymnopédies, Gymnopédie No. 1 (Lent Et Douloureux)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eff7b3538c3189b94f5e955b4c4fe04f8fb004a974c2de2a1574bafeb583a52. 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/USCGH1658968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2eb817a50299198b07cf3725bb353ef0c2ff19a5e39810b40a7c8c4bfbc738e. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:30:08Z), 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/USCGH1658969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb7060e620d2c764160c0da2eb7e4fdb7f63a339ff3836859b017c28894924e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USCGH1658970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4711bb47e80c51508f5dcb34d74c016c55cca5106075af8a861f0805b03e0af. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USCGH1658971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a11b9223365851e35da18f179928525d911bd9896b14eb1dc6ed05ba247151. 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/USCGH1658972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71832018d755b7a1c986bfcc6d325404491119b4fceca8ccfa8c040d7f58dea0. 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/USCGH1658973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01cd81dc88dd9e2db465d924da6bccbb5e9e30d0b8cb898fa0a684b8089cb37a. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:04:25Z), 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/USCGH1658974.
Scenes of Childhood (Kinderszenen), Op. 15: I. of Foreign Lands and People
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ebf99267728e07f9a43ece63ee8f0a86a0e9c078ec7f796764827c48440968. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/USCGH1658975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d26caf3df57d1c5911f0ffe908faeb2d16613dd9d50c1757c7330d16084ea3a. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:35:52Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGH1658976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe424365c201e461c68224799b589fe587b701c780cf41f1e3c3dfac7cc27eab5. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T13:46:41Z), 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/USCGH1658977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a48eca198c97009ca26a089dd059d506bcaeef8f0b1a5a49ac622602ebd73a. 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/USCGH1658978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd43e8e4207676b19c1b4e997a1dd2ff3795e73911477ca44bfdc09637340d40. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:43:59Z), 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/USCGH1658979.
Scenes of Childhood (Kinderszenen), Op. 15: VII. Dreaming [Traumerei]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9cdde04c8656e2d7e2cb7d9309bb675c567bb108709717402580b6b6edef2c6. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:45:25Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGH1658980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c560266c77eacd01c0470f88a1f1a09c4a7e83d2be2a10ce0092ee4a3670d8. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:47:53Z), 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/USCGH1658981.
The Well-Tempered Clavier, Book 1: Prelude No. 1 in C Major, BWV 846 1A
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66b51634a4b7b9408d5633b7f19056f74fb1807d19951110a6a24876e0ec4a7. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USCGH1658982.
Baby Sleep Lullabies, Vol. 2: Soothing Music for Newborn and Toddler Naptime, Baby Sleep Aid, Insomnia, Meditation, Nursery Rhymes for Babies, Musica de Relajacion para Bebes
Baby Sleep Lullabies, Vol. 3: Gentle Music for Sleeping Babies, Relaxation, Infant Sleep Aid, Lullaby, Toddler Bedtime, Insomnia, Meditation, Nursery Rhymes
White Noise and Nature Sounds for Sleep Aid, Relaxation, Meditation and Baby Lullaby
Baby Sleep Lullabies, Vol. 4: Gentle Music for Sleeping Babies, Relaxation, Infant Sleep Aid, Lullaby, Toddler Bedtime, Insomnia, Meditation, Nursery Rhymes