John McDermott may refer to: John McDermott (heavyweight boxer) (born 1980), English boxer John McDermott (featherweight boxer), Scottish boxer John McDermott (English footballer) (born 1969), former
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 0xecd23e478a0250e2e4df7a2f6277366c61c1ce2f3b29977039af30849983c569. 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/df860be6-6cd5-4091-89bb-301551ed736d.json and https://artists.proofprofile.net/proofs/artist/df860be6-6cd5-4091-89bb-301551ed736d.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 0x114950c39a24e5d16e90ea42b528086334373a7cabd5b30afc4d7dcb2b509b26. 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/CAE159400130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86713ee70b66c35af1ab4b05ae3c40853be26c822a088134e2dcd720e4b93c54. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/CAE159400137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b05760d0ca7d37dc8f8fbbaa1e74e0e6490c716638b2f0c1dbc83d65e9bdfd. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/CAE159500177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328ce6dad18c9e389ca8ff748ba39ca30c1a73a98c9aa05654e6c706b8878063. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CAE159800126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5ec3f65fe3e5a2a761a37d94a9b4ef3557241db807bed6131dcf3dba630bda. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/CAE159800113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e5c18ae2629e095b502938f3827356cb3ebfa03740fb165b67ed7a38dc23a1. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/CAE159900018.
O Canada And Other Inspirational International Anthems
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56d7d7ea3f2b0801490c05b815fd2ebddc37f262c85f085153c06b1451c5359. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/CAE150100308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb371b36b961d6b0bbacf940aae708f61488c273dd16ab601a1b31b4a7f2b45f2. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/US1MD0100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0b3706048f205b0cc25f55f640c05f1182671a5f94c7d24def1d798842a007. 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/US1MD0100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631e277fb4afb4ee838c7350e296d302c16d499376d8dc422e0056723e53c0de. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/US1MD0100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1ce0adb395bd65cd3c35eebce02dc827b5b6903f6205c13d8d182336f185df. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/US1MD0100014.
Great Is Thy Faithfulness: Songs Of Inspiration
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b32f7a8d237f75cf85b69e34f787e492386087957f284542830f04c1de744b. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/CAE150100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114950c39a24e5d16e90ea42b528086334373a7cabd5b30afc4d7dcb2b509b26. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CAE159400130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0372f98b1604e8c57c05faa9c216922f5a7488d52f7d50612a69e4ae4ee11a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/CAL269200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7737701c672d574cb05bf38437595d0194bccf9f3b7a6218a18bee46bd490b87. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCABG1209489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec7de4af6265b365ea12ff12767b46a1c6c7d97ebc43c63df56f37cf5610722. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/TCABG1209492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd55fa5e9642e845aba5464af6b1bcb8b70e780dc070b3f42cca04e16f07e99. 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/TCABG1209496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29cc4ff6fdb0a62be4145b978f04f42f39f48a7114cb903b7fc58db8c687cfe. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCABG1209501.
Believe Me, If All Those Endearing Young Charms
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0aab5f178bbfa77150c76db8fd762cff2b2149759a78ad832fd8403c506bb4. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/TCABG1209766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6924c22cc2429fec3ea9843f8f4b719a2f5fbffec0fe53c3e84d7676dfb0b3ca. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/TCABW1461215.
Daughter of Mine (The Perfect Wedding Album)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a356a04534d8ee8a9f9b5abebe9c384e2179aa1c92ea63cda8fcc3beef2adbc. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/TCACZ1717777.
An Evening with the John McDermott Trio, Vol. 2
Robbie Burns: The Bard of Ayrshire & the Ploughman Poet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f472b966ddf6d9829316ae809cbf37864018a1d69e55c43aac575a970c74ca9. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/CBAMK2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32a9ff74759965212e837319017d806d453d3c9875c717bdc511991c3e0f74d. 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/GBABT9400137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1859e8bbd70cd98620cee7c06a323770c44c45e7780073ee8fcae273ae16dc4f. 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/GBABT9400136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32a9ff74759965212e837319017d806d453d3c9875c717bdc511991c3e0f74d. 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/GBABT9400137.