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 0xaa990b269a2607d54aedf1d768978df84dd4d88756d650192888addca55a3415. Chain 2 (Bitcoin): anchored in block 953662 (2026-06-14T17:28:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/55fb9772-e24a-4ef1-a025-e8ffcd28e4ee.json and https://artists.proofprofile.net/proofs/artist/55fb9772-e24a-4ef1-a025-e8ffcd28e4ee.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
All the Great White Jazz Musicians in New York City
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 0xfbd7219a13800d00c12ed6c355226346e41953b34822f4a5a2987513dd7f0198. 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/GBLGL0943639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16da51c9ba7558a1675d642532c753311e3ab5946238da23c8f6d9dc65a8d30. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:21:08Z), 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/GBLGL0943641.
The Fabulous Dorseys Play Dixieland Jazz
The Dorsey Brothers Orchestra Live In The Meadowbrook, 28 October 1955
The Dorsey Brothers' Orchestra's Tailspin
Let's Do It (Let's Fall in Love) (with The Dorsey Brothers)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8747fad0e2eb8c8d090271c20835757253f748df13ce1d71eae848e666c97de8. 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/USSM12900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf149f4f958af87ac9c0fe4d4b0126e916394c7abec9202259515748f48e46f3c. 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/USSM11402295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a24296c1368989872669db039f403e94b2a9ee2c617a8f88819a60e474fd3f. 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/USSM11402286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10155fa8d288d8461882cced07a490c1a26f621b5e0725110b6c8f71c5fc5404. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T08:07:01Z), 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/USSM12800053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc80be80675ce7b934e27e982af5052d24491da2bdc99299e0781ab296a394a4. 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/USBB10100144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735c5ca9edcaa07b913901296e75a99ce378938afa0f89868e76863be599ff9e. 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/USSM10305990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac4cbb3b0ed04abc266f02e5d98edbc14152007e0396c5752d6add053f59cb8. 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/USSM11402288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45440e22b49813b067cc1e403cfc256e1f15e543203751b3966149efb548c75c. 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/USSM10504081.
Livin' in the Sunlight, Lovin' in the Moonlight
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f57f51585048f705853a8fc0dc193e6a17bd7c731a03cc2987bffdc18ddcbd. 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/USSM11402291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd107a947168454c6df5efd8b80eb30565c717bf930c7ae5a89b096ec35e2ac9. 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/USSM10305980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71acf896101e7561957c102f7ca2e376f35a4f6d27882aac5eede8556e13818a. 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/USSM10408346.
Please (with Anson Weeks & His Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689ea0862e688136c0773e0154baca5a3b936a8c3eb83032cdf6f69f4c86a232. 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/USSM13200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5d3da151ddef1963ea109af278e7376ec9c5aec4dae58e0215957e0250b4d1. 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/USSM11402307.
The Complete Columbia Recording Sessions, Vol. 1 - 1929-1937
Give Me Liberty or Give Me Love (with The Dorsey Brothers Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0dd2bef881f4d063f73c9442ff2e34cd1580be1ea9d67869c5ffc70257a74a1. 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/USSM11602186.
Doin' the Uptown Lowdown (with The Dorsey Brothers Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c56b247b052d2ecc0e572aceef3a7479e6bad2c892e0ca5d939f36ba81d37b3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USSM11301637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad3040f1161c4018bc8cb300b9605b14247841d1fe632a1cf52b2a14e1333b3. 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/USSM11400971.
Dance Music From The 20S And 30S (Cheek To Cheek)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73e056ba510b9e869ee0ad33823988567a65d264e9241f46f6f745c19f7b884. 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/GBCJG0500852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e973bb0cb9403f3ebbb7188d8737ed6806296de3e13c35d166893ccad1c47d. 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/USPH21701805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6c56137834e5e57f504d9c7d126754e16b77e0d3c0b176fc31a51b796d18e2. 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/USPH21701807.
Every Breath You Take (feat. New Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66770924ffa81e6bc1640a683b59c1b14064bdda5926f3c917a49d40f59a35d9. 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/USPH21701810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c02c5e7e2f0df3ea50ab67b9d61ef64c0c0221808d1f167484e4ec4cde03a24. 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/USPH21701811.
Let Me Sing and I'm Happy (feat. The Dorsey Brothers)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7526c8e492cee296a35ae156d613f66ba82e3250451b2476053c205fa6f283. 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/USSM10027985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb23ddd0f7d98aa2b559b487b32cf423282b9241cdc3261f837a2cb4e33637b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBGVZ1200154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508fed9cf578ed35805e069d7b417d468e71704089fd2049e1981a493f608c1e. 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/GBGVZ1200156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95c2377730c1169203bbdd0d9906ef72e8255f124141db44896a7ccc4be00f9. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/GBGVZ1200191.
Crosby, Bing: Wrap Your Troubles in Dreams (1927-1931)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf1b5af044a603c22d56f79bd404d4282f26a898e0b76c7b1478fd000e026da. 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/GBKPL2280555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658ac36fe25cf756c1751aff11cd8af85ffbe8cd4f1989b932a68bbbf3aa082f. 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/GBKPL2283032.
Art Deco Series: Lovely Ladies of Stage & Screen
If You Can't Sing It (You'll Have To Swing It)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d7cf7200f4e7dcc6a49a5db780469d78c7cc0e94d5294c43e020fddc97fc64. 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/USSM12200140.
The Boswell Sisters: Syncopating Harmonists from New Orleans
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa502d0d01a350dc7d9e81a6170c020f3d2e728ecb25ad7ca2610dacc39fa690b. 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/GBKPL2210117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe100aa81ab65e0b794bba8a1a3f80fcb61c5a07497b5ecc5fd4fec45401b4c7e. 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/USA560688106.
Musical Moments to Remember: I'm Nobody's Baby
Jazz Age Chronicles, Vol. 10: Songs of the Late 1920s
Hoagy Carmichael: The First Of The Singer-Songwriters, CD C
I Got a Kick Out of You (Cole Porter Songs)
Schellack Schätze: Treasures on 78 RPM from Berlin, Europe & the World, Vol. 55