1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x36042f2a906e293bc0796c581a8c09a6d275966f7b360aff5afbbe7ef4507ebf. 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/dd207b17-136f-43e0-816c-d921654c6650.json and https://artists.proofprofile.net/proofs/artist/dd207b17-136f-43e0-816c-d921654c6650.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Judy Garland: Recordings from the M-G-M Films (Motion Picture Soundtrack Anthology)
Waltz with a Swing / Americana (from "Every Sunday") - 2022 Remaster
Yours and Mine (from "Broadway Melody of 1938") - [Outtake] [2022 Remaster]
Your Broadway and My Broadway (from "Broadway Melody of 1938") - [Outtake] [2022 Remaster]
Dear Mr. Gable / You Made Me Love You (I Didn't Want to Do It) [from "Broadway Melody of 1938"] - 2022 Remaster
Got a Pair of New Shoes (from "Thoroughbreds Don't Cry") - [Extended Version] [2022 Remaster]
Sun Showers (from "Thoroughbreds Don't Cry") - [Outtake] [2022 Remaster]
Down on Melody Farm (from "Everybody Sing") - [Extended Version] [2022 Remaster]
Ever Since the World Began / Shall I Sing a Melody? (from "Everybody Sing") - 2022 Remaster
Swing, Mr. Mendelssohn (from "Everybody Sing") - 2022 Remaster
In Between (from "Love Finds Andy Hardy") - 2022 Remaster
It Never Rains, But What It Pours (from "Love Finds Andy Hardy") - 2022 Remaster
Bei Mir Bist Du Schoen (from "Love Finds Andy Hardy") - 2022 Remaster
Meet the Beat of My Heart (from "Love Finds Andy Hardy") - 2022 Remaster
Zing! Went the Strings of My Heart (from "Listen, Darling") - 2022 Remaster
{"copyright_id":"0x9f11d307b6fec7d69d56d10cfdda220891637e116f66fe602f9c8eeab68c2920","isrc":"USNLR2200576","name":"Zing! Went the Strings of My Heart (from \"Listen, Darling\") - 2022 Remaster","registered_at":"2026-06-22T03:24:28Z","spotify_id":"7rsD3vnsKESVJ8XdA0sOg8","type":"track"}
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f11d307b6fec7d69d56d10cfdda220891637e116f66fe602f9c8eeab68c2920. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7rsD3vnsKESVJ8XdA0sOg8.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7rsD3vnsKESVJ8XdA0sOg8.
On the Bumpy Road to Love (from "Listen, Darling") - 2022 Remaster
Ten Pins in the Sky (from "Listen, Darling") - 2022 Remaster
We're Off to See the Wizard (from "The Wizard of Oz") - 2022 Remaster
{"copyright_id":"0x0a9f09177d1130fe7624081f702a0c380e5ae2181ecefcaa9376a1e29075cbe4","isrc":"USNLR2200580","name":"We're Off to See the Wizard (from \"The Wizard of Oz\") - 2022 Remaster","registered_at":"2026-06-24T15:07:09Z","spotify_id":"6RZvwl1e2gNAXVvlLSL476","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9f09177d1130fe7624081f702a0c380e5ae2181ecefcaa9376a1e29075cbe4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6RZvwl1e2gNAXVvlLSL476.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6RZvwl1e2gNAXVvlLSL476.
Good Morning (from "Babes in Arms") - 2022 Remaster
{"copyright_id":"0x8df607b1ddc8a435ecd331d9c760742360c9b743aca07c9fd3c2c84d14f22f09","isrc":"USNLR2200581","name":"Good Morning (from \"Babes in Arms\") - 2022 Remaster","registered_at":"2026-06-10T18:18:32Z","spotify_id":"2MYMYKnFUx4LVh4GZhWizE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df607b1ddc8a435ecd331d9c760742360c9b743aca07c9fd3c2c84d14f22f09. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2MYMYKnFUx4LVh4GZhWizE.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2MYMYKnFUx4LVh4GZhWizE.
I Cried for You (Now It's Your Turn to Cry Over Me) [from "Babes in Arms"] - [Extended Version] [2022 Remaster]
I'm Nobody's Baby (from "Andy Hardy Meets Debutante") - 2022 Remaster
Buds Won't Bud (from "Andy Hardy Meets Debutante") - [Outtake] [2022 Remaster]
All I Do Is Dream of You (from "Andy Hardy Meets Debutante") - [Outtake] [2022 Remaster]
Alone (from "Andy Hardy Meets Debutante") - 2022 Remaster
Our Love Affair (from "Strike Up the Band") - 2022 Remaster
Do the La Conga (from "Strike Up the Band") - [Extended Version] [2022 Remaster]
Nobody (from "Strike Up the Band") - 2022 Remaster
It's a Great Day for the Irish (from "Little Nellie Kelly") - 2022 Remaster
Danny Boy (from "Little Nellie Kelly") - [Outtake] [2022 Remaster]
A Pretty Girl Milking Her Cow (from "Little Nellie Kelly") - 2022 Remaster
Singin' in the Rain (from "Little Nellie Kelly") - 2022 Remaster
{"copyright_id":"0xcd3ad4fc7c23511aadf6e4ccd878bde6619793fc1d20f9ddfeb423e16afb484b","isrc":"USNLR2200593","name":"Singin' in the Rain (from \"Little Nellie Kelly\") - 2022 Remaster","registered_at":"2026-06-23T07:57:45Z","spotify_id":"3Eu8q7C4BFoLioH5SkXHi6","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd3ad4fc7c23511aadf6e4ccd878bde6619793fc1d20f9ddfeb423e16afb484b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3Eu8q7C4BFoLioH5SkXHi6.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/3Eu8q7C4BFoLioH5SkXHi6.
We Must Have Music (from "Ziegfeld Girl") - [Outtake] [2022 Remaster]
I'm Always Chasing Rainbows (from "Ziegfeld Girl") - 2022 Remaster
Minnie from Trinidad (from "Ziegfeld Girl") - 2022 Remaster
Easy to Love (from "Life Begins for Andy Hardy") - [Outtake] [2022 Remaster]
How About You? (from "Babes on Broadway") - 2022 Remaster
Bombshell from Brazil (from "Babes on Broadway") - 2022 Remaster
F.D.R. Jones (from "Babes on Broadway") - 2022 Remaster
Don't Leave Me Daddy (from "For Me and My Gal") - 2022 Remaster
For Me and My Gal (from "For Me and My Gal") - 2022 Remaster
After You've Gone (from "For Me and My Gal") - 2022 Remaster
{"copyright_id":"0xd808bf2ac8212f43f48b891c854159f38355b50d5867885ea4be53a16c4ac3a2","isrc":"USNLR2200603","name":"After You've Gone (from \"For Me and My Gal\") - 2022 Remaster","registered_at":"2026-06-18T17:24:29Z","spotify_id":"37dNOE5ehTfbOYTX7koXRd","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd808bf2ac8212f43f48b891c854159f38355b50d5867885ea4be53a16c4ac3a2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/37dNOE5ehTfbOYTX7koXRd.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/37dNOE5ehTfbOYTX7koXRd.
How 'Ya Gonna Keep 'Em Down on the Farm? (from "For Me and My Gal") - 2022 Remaster
Smiles (from "For Me and My Gal") - [Outtake] [2022 Remaster]
Finale (from "For Me and My Gal") - [Alternate Version] [2022 Remaster]
Tom, Tom, the Piper's Son (from "Presenting Lily Mars") - 2022 Remaster
When I Look at You (from "Presenting Lily Mars") - 2022 Remaster
Paging Mr. Greenback (from "Presenting Lily Mars") - 2022 Remaster
The Joint Is Really Jumpin' Down at Carnegie Hall (from "Thousands Cheer") - 2022 Remaster
Bidin' My Time (from "Girl Crazy") - 2022 Remaster
Could You Use Me? (from "Girl Crazy") - 2022 Remaster
Over the Rainbow (From "The Wizard of Oz")
{"copyright_id":"0xd763c892517fb1a2fbac136e586d56de87a57a08781339bb85260265d6da526f","isrc":"USNLR2200579","name":"Over the Rainbow (From \"The Wizard of Oz\")","registered_at":"2026-06-04T09:45:38Z","spotify_id":"32lgKuOf0esvxQsh5tXAA5","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd763c892517fb1a2fbac136e586d56de87a57a08781339bb85260265d6da526f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/32lgKuOf0esvxQsh5tXAA5.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/32lgKuOf0esvxQsh5tXAA5.
Get Happy/Happy Days Are Here Again (feat. Judy Garland)
{"copyright_id":"0xee282bcd44138e636dad0339d24f995eb05c9c5c8ee88f0120b580094f4fd27d","isrc":"USSM19804794","name":"Get Happy/Happy Days Are Here Again (feat. Judy Garland)","registered_at":"2026-06-06T02:58:41Z","spotify_id":"54igi8hshj93y8PjIaL5Fa","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee282bcd44138e636dad0339d24f995eb05c9c5c8ee88f0120b580094f4fd27d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/54igi8hshj93y8PjIaL5Fa.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/54igi8hshj93y8PjIaL5Fa.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131c79a298a8934eb94a462a3b2fcf2fe11ec848a193e42793d1dbb43e12ba82. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1wptnduBZppNvRHzR4SHI8.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1wptnduBZppNvRHzR4SHI8.
Vintage Hollywood Classics, Vol. 3: Annie Get Your Gun - Easter Parade - The Pirate - Show Boat & Others (Original Stars, Original Soundtracks)
{"copyright_id":"0x44320c546b4b9a61c1c3f0df813c9740147b45ca8fb88d5a29fea4fecf065f3f","isrc":"DEL111301900","name":"Easter Parade: Happy Easter","registered_at":"2026-06-08T20:53:49Z","spotify_id":"4OENUGeqq3vYJr0mwaKPAl","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44320c546b4b9a61c1c3f0df813c9740147b45ca8fb88d5a29fea4fecf065f3f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4OENUGeqq3vYJr0mwaKPAl.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4OENUGeqq3vYJr0mwaKPAl.
Get Happy (from "Summer Stock") - 2006 Remaster
That's Entertainment (The Ultimate Soundtrack Anthology of MGM Musicals)
{"copyright_id":"0xd833784fc7dc809ff1ddd8d3a6c5f2dc4b9163fd416ad01119fe8af45ea7ce24","isrc":"UST1C0550010","name":"Get Happy (from \"Summer Stock\") - 2006 Remaster","registered_at":"2026-06-21T20:49:07Z","spotify_id":"2r5Z8y0ZHaxuQ5Zqthndtr","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd833784fc7dc809ff1ddd8d3a6c5f2dc4b9163fd416ad01119fe8af45ea7ce24. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2r5Z8y0ZHaxuQ5Zqthndtr.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/2r5Z8y0ZHaxuQ5Zqthndtr.
Singin' in the Rain ("That's Entertainment" Medley) - 2006 Remaster
{"copyright_id":"0x05be254202e0989175570c4d21fd7ef5cb93a9be6539b2de61d2ebb0910c141e","isrc":"UST1C0550535","name":"Singin' in the Rain (\"That's Entertainment\" Medley) - 2006 Remaster","registered_at":"2026-06-20T22:16:29Z","spotify_id":"6B9EEpaVfd4zHbTGQGFv8C","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05be254202e0989175570c4d21fd7ef5cb93a9be6539b2de61d2ebb0910c141e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6B9EEpaVfd4zHbTGQGFv8C.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/6B9EEpaVfd4zHbTGQGFv8C.
The Trolley Song (from "Meet Me in St. Louis") - 2006 Remaster
Easter Parade: Steppin' Out with My Baby