Walter Charles (born Walter Charles Jacobsen; April 4, 1945 – August 3, 2023) was an American actor and singer. Charles made his Broadway debut in Grease in 1972. Additional Broadway credits include
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 0x4f23f8ae1d40bf6c602a750e85dbb4af629a2f95399b509d8edee674a2704fcd. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5b944eef-dafc-423e-900c-3816a1f49e8b.json and https://artists.proofprofile.net/proofs/artist/5b944eef-dafc-423e-900c-3816a1f49e8b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A Christmas Carol (Original Cast Recording)
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 0xefbd88fb16c9643bb79fb8019d2ad1b3476af0fe303a55d6f7aef6ccc4eb2e00. 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/USSM19500457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf7ea854f889c584e6742dbdeb200f038ee08926d931701da4901a77d2c8637. 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/USSM19500459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b6853fd73ef65c49776229fe020e5a459acf1bf3092bfcc1e311031ebf4286c. 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/USSM19500464.
Anything Goes New Broadway Company Orchestra
Anything Goes (New Broadway Cast Recording)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4618331fa1f4176de2166c079640f85c76e61aded55702ad260c4a7eef6536. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USSK31140112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25882b92586e4dbdd731b0bbeb3282abcfd26c50b5229a76aaa618f7b1f7b276. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USSM19500456.
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 0xd466755fab1d18a885cda980904b1a74350ec6063ed5b3b415b24623b074a474. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USSM19500458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2e472b2cd227bb47c2398ddba6a34f42254de7e96ece7bde7a18280f3b509b. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USSM19500460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82739ed19cd64439eafbd2c898696183f6f67d5aa435825a3352db4948346de. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USSM19500461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c4be738311c5e000b410055fbf16e03a2dd3a4b8d5c0013ce352c95ee20944. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/USSM19500462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a92c23004214c466632d11b69292a84f0f4343eea1fcdcad14fdbb4a893f2a0. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/USSM19500463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c0e020af89a3ff4dad437bb9a5c85c352b381236abc14d8f1ad90261723598. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/USSM19500466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568cc2a60f65c6d1383a68fbe918ff88306ef49a56debb8d31a51441f1cbec8d. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/USSM19500467.