Robert Reiniger Meredith Willson (May 18, 1902 – June 15, 1984) was an American flautist, composer, conductor, musical arranger, bandleader, playwright, and writer. He is perhaps best known for writ
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 0x948ead7f9397d745e1f1cb93757ee560d33fe37ceae12bc059bf788eaf2e578b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/32e576f8-32fd-4f9b-919a-ad2a76dfeaaf.json and https://artists.proofprofile.net/proofs/artist/32e576f8-32fd-4f9b-919a-ad2a76dfeaaf.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 0x7fb27b5ec8c6b62d86ed2d378584cdea633301ca78f39f87c18971e2b1a13f2b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/NLA508400501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a611012ea09411962df3a4264db41d1d6b51542e4b3e691d57b39938e63a3b9. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/NLA508400507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9aff6023467368f0994fa62f3b9d951683eecead8c440d1baf5940ea989b070. 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/NLA508400505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53d6cbb959418df2780a43a2ba265d44ffb34bef26ee03bdd654e0b3f024163. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/NLA508400504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a39e950e47c3919fedd9760b472b01aa480b2073db5186c38f83a6d960c2b0. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NLA508400506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770141646b64c81a4a30daf70ebc6aaedcc437525926b47fa65e0a40c470b91f. 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/NLA508400503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4270807503ee849640d917a78aaba9a36c335b1e47096c924af9cbc395150bd5. 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/USF067302010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2955c35eb2fcd7b14cf9331e9a113f3f5c93c8ade3cabfdc504af6b0127bd790. 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/USF067302060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3789e8fa0fc353d76f223b8cd4b4456d78e8ce5896a6a6eee055fc739ec051a9. 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/NLA508000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53242cb7657c251816b0ed64b8ac251deee83ed51af4279306ec1c83b3f6f98c. 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/USF067102120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad84316f0d24367b58ba11391504c77c1a7b4c1dd147e4c97fbfacc0a330a3b1. 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/NLA508400502.
The Golden Age of Light Music: War and Peace - Light Music of the 1940s
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372cddd6274753fb293787593be83581c23c048752d8a8a511091dbe2ce74767. 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/CH6631057101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7fd6b65ba81440b87a4b72f0803a915a5285555da2e3c77f63937127f165fd. 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/CH6631057102.
Willson, M.: Music Man (The) (Original Broadway Cast Recording) (1957)
The Music Man: Rock Island (Charlie, Travelling Salesmen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd5b3217a97adddb7c75d752bfe73ddfbed41f0b20c2154aedb27aa9a92a447. 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/HKI190891602.
The Music Man: Till I Met You (1950 mono recording)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16dd7c37344c2afa6d0a13fe1bd0b2c9fc08f4bfa05a301d2f47b38ee723ef06. 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/HKI190891620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6123024784896b1219fe146fb562bb511af6163a5036ae40752e5c37f76cfec0. 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/HKI190891621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84940e169107ecb82e278d1e4d4d15490f61835e4e5de9ee83f63546bbf36f46. 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/HKI190891622.
The Music Man: Pick-a-Little, Talk-a-Little
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8284853481cac80d4ef167480299bb9ea15fa8adc1b297d620cc7994b94d24. 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/HKI190891623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf36ee6e5e95912bd089f75fe93806f78880aa6bf214d04bb91c7c6f2decf7e. 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/HKI190891625.
Seventy-Six Trombones from the Music Man - 1995 Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1053c5ee636ca521641cda9bd5196cd25d6c1cd82d5f236de18856880c9a3e. 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/GBAYE9500293.
It’s Beginning to Look a Lot Like Christmas (Arr. by Tom Rainey)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dfb7cb4c9550eff966685468d6a9a065c1580df03230009e5b7674611d8a73c. 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/GB5KW2201792.
Seventy Six Trombones from The Music Man - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938afac1eca366a6a5dd5b12be24a8cf2e5eaadd281287f8b840655231d083de. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USSM19000792.
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
Anderson, L.: Orchestral Music, Vol. 3 - Sleigh Ride / The Typewriter / Plink, Plank, Plunk! / The Syncopated Clock
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c054b8c5063fc361a27fc20700d12e25e897bc6f2c569d37afa514e4b23597. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/HKI190814312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70cd5e5cda39450333ad8ea3fbd8f91c874567b22478e7f908fc3943ba3b7208. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/USFKZ0610437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e1b1616215c391c713e97adbae400c5026438615a67ecc6352fc4ac43b3cbf. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBBBA0240712.