Michael, Mike or Mick McCarthy may refer to: Arts and entertainment Michael McCarthy (choirmaster), British-American choral director Michael McCarthy (film director) (1917–1959), director of It's Nev
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 0x44b444dd98fd7293b71119276efd79159aa89e87413b12a8e6cb4144b2d99cef. 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/5d98d778-6651-410a-959e-2ce8e001c488.json and https://artists.proofprofile.net/proofs/artist/5d98d778-6651-410a-959e-2ce8e001c488.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
My country 'tis of thee, "America" (arr. D. Willcocks)
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 0x4d00048dcbfb418fc8731289b5a18b21992cdcbfb6281e86f6b6d602940e97be. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/US42R0550101.
America the Beautiful (arr. M. McCarthy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4711dbe8c28fe2e52869f3a464cd6dc6c51d1edbb4311323a86569c5e828cd9e. 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/US42R0550102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00123cfbfe03098a29ce1f487af7f25e5e73000eb28afbc7e1a446ef1c9bea31. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/US42R0550104.
My Shepherd Will Supply My Need (arr. V. Thomson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1a1427b38ec4ecf73a1e1384981a720b15892f2fb0f978b8cc3eb5e33352e5. 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/US42R0550105.
There Is a Balm in Gilead (arr. W.L. Dawson): There is a balm in Gilead (arr. W.L. Dawson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9b6703420a31e6afeb2bc02df68807212453c02343957d7ba83393886952a3. 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/US42R0550106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff5f8dc7b6f5793479aa8b9d0ee77b3d50d0df90e5d48c29048bb1de4862ecf. 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/US42R0550107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e543ae3f3bb59c7b3d1ea4b439213dca414b5b92fabd2674bb0c99e82a1ed0. 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/US42R0550109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ebf9001ef0dc442efd6452e448b7816ac9edbe91a9dae499f67943e74d46c1c. 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/US42R0550112.
Battle Hymn of the Republic (arr. P. Wilhousky)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f987067ae6b684bdae19c1ea7af04f4b6f4ef6734a6821d9edc2289c9df1e17. 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/US42R0550114.
Léonin / Pérotin: Magnus Liber / Feast of St. Stephen: Etenim sederunt principes (à 1) (Introit)
The History Of Classical Music - Part 1 - From Gregorian Chant To C.P.E. Bach
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5913ba8fb14caaa7decf3eff20ecf776a07bcf9614bfd5e1976070ab2e6d702d. 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/DEF059631808.
The "Les Misérables" 10th Anniversary Cast, The "Les Misérables" 10th Anniversary Choir
Les Misérables (10th Anniversary Concert Live at Royal Albert Hall)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee04df3460195d10565047896ae7348a93e33d4a091c7de4e448994b3724c56. 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/GBBKB9620804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a40c00e1f5a976d1e2cb522bb83b64a7724808c7191c9de43919a4ba34f74bb. 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/NLA509803913.
Léonin / Pérotin: Magnus Liber / Easter: Pascha nostrum immolatus (à 1) (Communion)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa47b48d0b2ce683d5b6184c612ae3226a997a67568c7827662091f68815f6d. 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/DEF059631801.
Léonin / Pérotin: Magnus Liber / Easter: Et valde mane una sabbatorum (à 2) (Matins responsory)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf29c0ac08796c2ab3fa150844670c0ca89cba409f3b516b9359578235c6f889. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/DEF059631802.
Léonin / Pérotin: Magnus Liber / Easter: Victimae paschali laudes (à 1) (Sequence)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708928e3cb11dd90413e3a81c124c23b3b5917cf7f068b7064a197b30b61f993. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/DEF059631803.
Léonin / Pérotin: Magnus Liber / Easter: Cristus resurgens - Dicant nunc (à 3) (Processional Antiphon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda96495220fba58a3ecac6cec72a0f2a0f8f442d8efa7f59d866a729b78b8209. 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/DEF059631804.
Léonin / Pérotin: Magnus Liber / Feast of the Assumption of the Blessed Virgin Mary: Benedicta (à 3) - Virgo, Dei genitrix (à 3) (Gradual)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7fc0ad81bb9a303827fce757bcef5ef1c4ee7b5b7d95d2cdda28dbd70fe04f. 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/DEF059631805.
Léonin / Pérotin: Magnus Liber / Feast of the Assumption of the Blessed Virgin Mary: Alleluya - Assumpta est Maria (à 2) (Alleluya)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50dc9d588b7ff6b69b0cdf2edbd7dd5838d1c2e36437217d6359c4e31bbeb48. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DEF059631806.
Léonin / Pérotin: Magnus Liber / Feast of the Assumption of the Blessed Virgin Mary: Beata es, virgo Maria (à 2) (Offertory)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2183b268c6219b0f6e76de206e9e9ea92a95b2b5e4a148cf7cee1a8379c1dd37. 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/DEF059631807.
Magnus Liber / Feast Of St. Stephen: Sederunt principes - Adiuva me, Domine (à 4) (Gradual)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a38f872df1e8dc273529dd5ff740ca503c6a69de53bdb926eb1b637c0a906ee. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/DEF059631809.
Léonin / Pérotin: Magnus Liber / Feast of St. Stephen: Alleluya - Video celos apertos (à 2) (Alleluya)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b29eae7bcd31db4e66550e160e3d9b4f825bc6d5cd19e075b8e0878193af70. 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/DEF059631810.
Léonin / Pérotin: Magnus Liber / Feast of St. Stephen: Video celos apertos (Communion)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5963e34ef37f04033d97cc8b8341a74c753d56a62049526cadc1a90967b9e74a. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/DEF059631811.