Robert Lopez (born February 23, 1975) is an American songwriter for musicals and playwright, best known for co-creating The Book of Mormon and Avenue Q, and for co-writing the songs featured in the Di
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 0x15fee11b90925d26f373b9137417ea614b734bfc4ee7f32b89789e7d77ad55d8. 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/523666ab-8aff-4c69-a7b5-13019eb8e434.json and https://artists.proofprofile.net/proofs/artist/523666ab-8aff-4c69-a7b5-13019eb8e434.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
L'expression musicale, vol. 1. L'évocation de la nature (Mono Version)
L'expression musicale, vol. 2. L'expression des sentiments (Mono Version)
Les grands formes instrumentales, vol. 3 : La sonate avant Beethoven (Mono Version)
Do You Want to Build a Snowman? - Instrumental Karaoke
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 0xbe412c1b0d68027cc0a16ffe4000561931d1ff95d13a432535dbffdba5fcf455. 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/USWD11467885.
For the First Time in Forever (Reprise) - Instrumental Karaoke
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9c7f4d9113aee9cfbf3f9463010cb793948fa8c0c018ec8bfa74f2c1e9ae0e. 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/USWD11467887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509b88a63c312f5e6f2268cc80db5aab1ff727d52a38e9c855d5236aa9fd861c. 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/USWD11468934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335dcbae0121de46cdcfb58bc6e32c0f5a1f3c10740c36ab3c73420c1c8454df. 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/USWD11468936.
Symphonic Highlights from Frozen: Frozen Heart / Do You Want to Build a Snowman? / For the First Time in Forever / Epilogue / Let It Go (arr. S. Bulla)
Lakota East High School 2018 Gift of Music Concert
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50cfe954ff5e71e8b4eb8d52b35f3e11b89e7899ce0943b8ca1d1e0dac5bdaa. 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/USLZJ1982012.
Tales and Myths of Gothia - New Music for Concert Band - Demo Tracks 2018-2019
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a7acf65ac29bddfdb76e2b162cb2c7a39defb74ef05f7ed3cde57d983090e1. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/NODGN1807310.
For the First Time in Forever - Instrumental Karaoke
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba025100de588fb6c92fb6ee103566a6141a1db237274715ef6ead7167f6faf9. 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/USWD11366427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57bb5a4418da146f7bce08fcab2a467bbd0420347dc6ad835add846406ae214. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USWD11366426.
Reindeer(s) Are Better Than People - Instrumental Karaoke
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0758c425d133b5d6ab4da774b24e4b0b7e5e816356fdef65dc778747bbd9e505. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USWD11468935.
Love Is an Open Door - Instrumental Karaoke
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ee9523cfca4cdaac500f6c213fe0a9e866323010535652b6fce9329178e963. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/USWD11366428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28dd5482913ee748d6aa8a9221a402052e927df58679cbf020b2321550b1491. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USWD11366429.
Let It Go - Demi Lovato Version / Instrumental Karaoke
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92ffcfe75b48841ef7987971a7e67e652053f6efd12b4de71dfa6b45312289c. 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/USWD11366430.
Checks and Balances (from the Netflix Series "We The People")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff425d3a34eef5aa37a67e125b63a146c4b61b87876aff3e98354291bf9f4b4. 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/USAT22103219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8872b316c6c2c0de361c0cb0e1d0a3a24907cf0027c3f9ccab1e3037a75f98. 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/USQX91400261.
Frozen 2 (Originele Nederlandstalige Soundtrack/Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457f2df71c410c4f9c5483a541161420384011eac9097cded4408879e73ec551. 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/USWD11995039.
Sommige dingen veranderen nooit - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x663eed220fe21d66c1bf896757853c66e59a231ac32046bee32a83ca313ceb0d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USWD11995040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0856ad9def31a2dda16cab0b1a5730c280b131b2fe9c88c338ae5bbfc7a580. 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/USWD11995041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08592c47bfcc5c734753702ffa0b3d178e9532bb0ff81a601a37a05f76b7218e. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USWD11995042.