Mortimer is an English surname. Norman origins The surname Mortimer has a Norman origin, deriving from the village of Mortemer, Seine-Maritime, Normandy. A Norman castle existed at Mortemer from an
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 0xe4dbe584f21ba188b0df562debea558f54f6d220697da01322396dab1ee4bc15. 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/7882fe0a-21db-4591-b1ce-7e9c4ac6c995.json and https://artists.proofprofile.net/proofs/artist/7882fe0a-21db-4591-b1ce-7e9c4ac6c995.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 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 0x5c6cad2ab702e0bdc4d265450fff4917643e03412e422007435b50af8f654385. 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/JMA3S1500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26f4ee45c4770ec0ea8ed760bc204bcbac1334f209623ace3bc5a90acebe153. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US4CL1810034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae85aa35e9836fe538f4c620655bcc607dc29ef4f3265d68d386ab8296f73b63. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/US4CL1910040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61e0c98f5b7c80c943ee8c2b99d01aca2e2ed7f7d3015574ad3b5977ac93303. 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/US4CL1910059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7de41075b22050199b3f607a191ab644d7d61fcf30b2918fbcb690eb2e6ce5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US4CL1910060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17581fd769b3f5c6806b2451b3c63a4231842795a470af2852fe06636f8c7ce. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/US4CL1910061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2deece2f76e7bae635779d37e8c7ca99bee953193be40a407a2edf089a1f50c4. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USA2P2013189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826fe49ac32c58f5635537bace3f6512069c6757ef4cdd2a5d5fc5980bf406f2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US4CL2210034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8eaa2a4f1533e175867539d32cfbe9e28d89b406e2b3d90ec91db0a5ade99b2. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/US4CL2410023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8eaa2a4f1533e175867539d32cfbe9e28d89b406e2b3d90ec91db0a5ade99b2. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/US4CL2410023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1d899c5c87beb1da4c5a32b48a32809deeee830458b48211e5543e3da217f8. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/US4CL2410019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc500d6e4837b8016911f2cf3d4b68b27596d0477576469f984e86e3eff3110dc. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/US4CL2410029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7f6463d2f06238302273058ec2ecd536399e20316a0cc5240109c207887e10. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US4CL2410020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7c9e0fd12273f67b9d3e7840e6b0c45898e1da294e7a73b53307c433e502e6. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/US4CL2410021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1d899c5c87beb1da4c5a32b48a32809deeee830458b48211e5543e3da217f8. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/US4CL2410019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8eaa2a4f1533e175867539d32cfbe9e28d89b406e2b3d90ec91db0a5ade99b2. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/US4CL2410023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826fe49ac32c58f5635537bace3f6512069c6757ef4cdd2a5d5fc5980bf406f2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US4CL2210034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9970257d8e87ad9e869c391ce08201a62f923ccab932c951526d0a107a7d1959. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), 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/US4CL2510081.
Sprinter (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4cbe2b017251e31765d3457c028d76332e5926537645f96f200d2bc2720307. 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/QZHZ31978379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24e90ee04f8c3c365d4d935732c0119c2dc66cf318e1e838f71e9011bc3b7be. 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/GBCLQ1700101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36cfe709b3eea4c2c3459722517cc5af601b4fcf6d37c0271ba7f4b13c18cdd5. 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/FRPGB1500920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24e90ee04f8c3c365d4d935732c0119c2dc66cf318e1e838f71e9011bc3b7be. 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/GBCLQ1700101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640a89899745c363e1c613e1b2820695a503b9c0928eb741383ee9c9eb43fce6. 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/FR96X1876793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55fd16c011bc8d1ef468e4598fd52cb21477227e26ded560115264ba9a287ed. 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/ZAUM72000583.