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 0x56673e18d3e881948001aa28f0afcd29bdf9455f0b912dcbdb49e80a1d83dad5. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/792419a1-cc35-4d59-a867-3848c6f603f8.json and https://artists.proofprofile.net/proofs/artist/792419a1-cc35-4d59-a867-3848c6f603f8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xb1c489b204eea58ffe200c44bf798173317cea6507657de4f388d19b900a9d22. 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/GBC7N1042401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc81becba7d3c7a3b362dce3a4683022804d64a9675a0be1127a78d14105c14c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBC7N1042403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a733b8149238a08183b86240e0370cfd45b44f327a15b4a9b8c2c501788151. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBC7N1042404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc099c4698920ddc3e220ecc94f59ae133082defeb34b40014d995d3626d26724. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBC7N1042406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ecbdfb612f209c4ebc9976915e5428e4bff13a627896897b4eb05136944326. 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/GBC7N1042409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a524417553c2b71fa2fe6eefb0313b80a753320282b3ab2b78400b1da28fa6. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBC7N1042411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367ec0e6bebfbe1e673a84f546e17ec7615490829d3a62702a744d8a5a77055a. 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/GBC7N1042412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d10efcbe5d7d701b17c8caac54499b9702431c82c99018178fc1b1dc50d9d93. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBC7N1042413.
Battle Hymn of the Republic "Mine eyes have seen the glory"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5020e9d9fd4fdf959c86485bca440c77df4a231a1451ad527e69d25535f3c4c7. 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/GBC7N1042415.
Samuel Sebastian Wesley: Anthems, Vol. 2
Samuel Sebastian Wesley: Anthems, Vol. 1
Joy to the World: Carols from Worcester Cathedral
Christmas Chill - The Ultimate Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1d7d4293fd8f21bf2abc9e6cd0675ad2cbb627a2f044c1a7e0f35d2f8610ba. 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/HKI199823918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c7de30ccb1899652fb28de64d90d07ece3234ed8738870bf17992115286ad6. 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/HKI199826802.
50 of the Best: Classical Music for Christmas
Festgesang, MWV D4, "Gutenberg-Kantate": No. 2. (adap. W.H. Cummings as Hark! The Herald Angels Sing)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef896206bfce3c90ef61c8d21c6f6faabafb25d82bd25da9e160a053cb0c25f2. 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/HKI199337019.
Classical Music for the Christmas Holiday, Vol. 1
Saul, HWV 53 / Act 1: 2. Air: "An infant rais'd by thy command"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfaaef5be1e43cdbfc06350f844068306cbfad6b0f6bc6651f60c34a71d236bc. 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/DEF057231407.
Saul, HWV 53 / Act 1: 5. Chorus: How excellent thy Name, O Lord
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a72f4505ad1993db169c5072240f42a6e12e99f1e71941f780bd679752ce823. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEF057231410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52beb688f5e243ae19b875638aba95ff3f51f886c8e85adeecbfeb1d6d0d20e1. 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/DEF057231424.
Transcendental Voices - The Most Beautiful Choral Music Ever
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb9f16c97fc68a8ecdcc47ca2b37798c8adc858be2f0e14a8eb25ed6846171b. 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/USX761240160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5983dbcaa90f92a3c9c34112a0e8ac48545010a0b183d49f56db8d128154b3d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/AUAB01050710.
French Choral Jewels (Villette, Durufle, Langlais (Mass), Messiaen etc)
English Choral & Organ Music: Elgar, Finzi, Howells & Sumsion
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1cfda69b6ed1f52fea077352db45aa88a63fc0c0838525fb73a92d80fa53a3c. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USB8U1038994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaeb90efe10b61512dc9a1890cfe8cf51848fa904f6711f5d9cdfdd6fa639d21. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HKI199337002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5ea0d4164f797db7d73f342c2c45a9110eaacb01749f0f0a51315d00bc130c. 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/USB8U1047942.
Klassik ohne Krise: Zauberhafte Weihnachten
Howells: Magnificat Nunc Dimittis Benedictus - Britten: Te Deum - Gibbons: O Clap Your Hands
Gabriel's Message: One Thousand Years of Carols
50 Favorite Christmas Carols from England
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60364e20c83570a0b4f658eecedbe147f739a4f155465b17d08e4ba748fb70a5. 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/GBC7N1044018.