Joshua Winslow Groban (born February 27, 1981) is an American singer, songwriter, and actor. His first four solo albums have been certified multi-platinum, and he was charted in 2007 as the number-one
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 0x955007fd3b4a1290a84d13c5e6c68e5c04b284a8f38143cb288aa02c4d403faf. 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/03bfed6a-d8d5-43a0-af21-a36752b352cc.json and https://artists.proofprofile.net/proofs/artist/03bfed6a-d8d5-43a0-af21-a36752b352cc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Johanna (Act 2 Sequence) [2023 Broadway Cast Recording]
Johanna (Act 2 Sequence) - 2023 Broadway 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 0xdf3ac6c7be97341aef4e2d7426218caec129f9ad976e0bfa796551911607fec5. 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/USRH12301824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4539afacec2a8dede8f8554c8f2d7594ffa239b28091f4af6a9d1d04f19f6f2. 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/USRH12301850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43c827f72ed69293ee4fdf2863c80ee5372c9790db08073b03a00b0c85bae54. 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/USWB10106975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0144cc45448df1c94516483c13387169624a6e98825f7d383995bcac51d51a40. 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/USWB10106652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20abcc02b9583032aa073612ba94366e308a20297c1b493e3bb2af8b764532f8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USWB10106651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9dfa59bf589668aa3ea411f507e08c04df5510d8b3009344d74b719e8bce13. 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/USWB10106944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae656ebf5f51f808b5c26aacaad84ac70ff21558110a43a6300cc09f36e29c9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USWB10107377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6741d7694debf25731c99ca8810fb9a860135365c17fda10a571cfb5bde78ae4. 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/USWB10106977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4eb7d313bb5ec6b0cd862a8ca493839551a54c10efdc5fa17cbd5aa13b18741. 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/USWB10106978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02966b51bed444c29921d257bed2cc0a2b03357d2d6375673450f649c4b3e1e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USWB10106979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8611c62d0eee0d5420a7e29feceb17fa3502fa89f29d9f1d72eebb3532885a. 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/USWB10106980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b87684814bca1bba179058dcf04d2690dc6b241e6e6509a4dbe8e8ae79f14dc. 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/USWB10106983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa890ca1a223312b494ff2e25a3ff686a88a4ff9e696936384547c538829a03fd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USWB10106984.
Jesu, Joy of Man's Desiring (feat. Lili Haydn)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a5fe5d1a8436944cd46e0628bf84043c4bd2c8d2fe768ee48838e8d57baed0. 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/USWB10106985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfea4b0e48ae756c373178d670f87c9bf0a777f7a89cba7154ec0179d14c3a0a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USWB10106986.
The Worst Pies in London (2023 Broadway Cast Recording)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb365cf7c0320f637cf21a8727d93866ddf11a8276fcc0b5c9eaca89b12ca00a3. 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/USRH12301833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588eda5b7313edb0d208f572a78fe67c8b59c735bd254d8f24f16a78af5bd2ff. 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/USRH12301863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf51888e6bb1b3179a76f868feba75fad3848217e08298d8ddcb70d4af824f89. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USRH12301847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4539afacec2a8dede8f8554c8f2d7594ffa239b28091f4af6a9d1d04f19f6f2. 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/USRH12301850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f18f3197bb4f60fae14689310a6d1fe1a69b4b18d670c05a410801864208b76. 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/USRH12301851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9b8280de5916d9a324cef9bb31bbbc5c5cbc78eb4f8db6b55da8c06d3e2d59. 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/USRH12301866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0a56f9de728afce958216e812f83f72052d8e451da62b6a6f49b93a6715679. 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/USRH12301788.
Beauty and the Beast (Original Motion Picture Soundtrack/Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f0958fff2e8c8ae1642a13c2c8de01bd9c5bb619225ad4367b32aa2da59bc9. 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/USWD11778936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716acdf3ff05405d0e66e20e36cb26cc705ce54f566e73a5a802337a2795aadf. 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/USSM10211681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02f551ad822e502fb8eb4fa682f9fa0dd262b882bd49b08715aea66ee1f7a5e. 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/USSM11104357.