John Paul Larkin (March 13, 1942 – December 3, 1999), known professionally under the alias Scatman John, was an American musician. A prolific jazz pianist and vocalist for several decades, he rose to
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 0x4c868b2d8aca2ce1aa869ae5a4b249db717269c1a7aa0088eeb1464ff3714eaa. 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/6f050241-60e1-4307-a32e-996e360be07f.json and https://artists.proofprofile.net/proofs/artist/6f050241-60e1-4307-a32e-996e360be07f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Scatman (Ski-Ba-Bop-Ba-Dop-Bop) - Second Level
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 0xc04a3b3fd76c285153cc7ff6ba1279bece62e0c0949159b01ae28dfa1669b4f0. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DKELA9400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cbceb4b880f7af078f9deb6be114b07359040ad64438c5587f2a683f05db6cf. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:03:59Z), 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/DKELA9610013.
Scatman Ski-Ba-Bop-Ba-Dop-Bop (Mixes By Alex Christensen & F. Peterson)
Scatman (ski-ba-bop-ba-dop-bop) - New Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51b5c664c23838d9d51ad811db7c845d5a05cf5863e50cf3c0270c285613571. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/DEC769500006.
Scatman (ski-ba-bop-ba-dop-bop) - Pech-Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b63ff904df1e8a02577182b6af19629a1e07ece45caaec0ca9d486af0dbdaef. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/DEC769500007.
Scatman (Mixes by A. Christensen & F. Peterson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1047101d22809df256ff58e36713d62603edbf7eb1e3c7b6f9237733768e0fff. 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/DKELA9610005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8502740bb8cf8b7139f2be5a39ae31cd2c3e0ee2e02fdb9971f9679bd450463e. 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/DKELA9610012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7719669cd12ee83017dc251db63addd722aa214a868e702caec7e555c08ca6fc. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/DKELA9600501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e70d6c3c89a3e2476c372ab7d54ba1abb8a8bde6d89c4fbb74e04e0023ec8a3. 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/DKELA9600601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66deeccb49f67153d6e55908f0fb42fb30a6c21c29ddbf83088225350922656. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/DKELA9600605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07c8555daeca417404304197eb0354ed0092224436cd2a6cf8be163a567da7d. 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/DKELA9600606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc68bcab38ea86b4e4f387f89287219a20e587f90c143e1dec56209f3eea1bbb. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:05:20Z), 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/DKELA9600608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4701ad27291205ad94bc23db2c376f552a937800f914f667ed767176018d3c96. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/DKELA9600609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe7f51d38898eb6e54ea0e68d99d986cd2d53275b6a7c3d22360795391642a5. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/DKELA9600610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e52a9e5f8bd70c274e09430d05b5a32040800d186ad101fb280428c13afb365. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:07:15Z), 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/DKELA9600611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3ffe49baf8a876f7f7f61eafadec2a685aaaed028d8bb0139f2fc5fc71dca7. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/DKELA9600613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3fbb33e5ef5cc6f7f19ed74d31a25cf9bc7f46a3daf161658458d9c68c1bccb. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/DKELA9901201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc306328b6d17c7ed4a69244596735a4f02a8a8dbc6f09a974941045779b905. 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/DKELA9901203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85512751a04d4fb8c8bef918d0d3a8b0544d8f3b083123c09b39c1a54211d80d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DKELA9901205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe321fc289bc76f095acf440f975df1fffed2e6eed7dcc44dc80dbeece5ddb3ff. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/DKELA9901206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db9d475bf9182b209477af9c4fc63e6ac6d275435da32b53d21db5da259b0e0. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:10:22Z), 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/DKELA9901207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b73fd2e62d2f6df2f0d24fafe1891806f5b0d42cb9ccb4afa42a9f723ba6c5. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/DKELA9901208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f791edc65f5966273fdb062d5d3fffd483f06379e526757f94cafca930079cd. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/DKELA9901209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21fbcb12704a1d952b70037453d2e16727aace3d5175922114fccbd1dac0d0e. 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/DKELA9901211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435548f6f48e5bf8c8f9b0097fbd2429e22ea7951dc4a4e32c51817b8b06f189. 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/DKELA0300401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ca008b84d071d671d531d7a0db800809350b9bdcca9b3b7865de349df793f5. 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/DKELA1901101.