A screwball, also called a scroogie, is a baseball and fastpitch softball pitch that is thrown so as to break in the opposite direction of a slider or curveball. Depending on the pitcher's arm angle,
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 0xf60666f2b720753bc2022ead1f16b8b323c6f31239f4f1fbdeae574242cf9387. 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/48f26446-9311-4d58-bdb4-f29a173de708.json and https://artists.proofprofile.net/proofs/artist/48f26446-9311-4d58-bdb4-f29a173de708.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
F.A.Y.B.A.N. Instrumental - prod. DJ Premier
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 0xbc782a73b8f8ebe25d3a5d375a5b4b088d8d405a6a0393c366d3f92fa95a43b9. 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/CA5KR1908430.
Seen It All Instrumental - prod. DJ Premier
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e97519edf419c0ac75cd43d0fd1742face3310d04d2f9f7d4873048aeda07d9. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/CA5KR1908422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa611f3e9facb0df8e98f2c009eccf560ce4c0ec88c745d9c6dfc4372af3a9582. 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/CA5KR1907605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5609d1a8c3cc6bbed92b5ea72d1b8f6793767b1e22b325fd3065db0cd6a4501b. 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/CA5KR1907607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d42821681716ca197a6c408a15d223d4ec7a2a79e37f24a9267a6701af0c547. 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/CA5KR1907612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e10ebea4bf55f36a2e304f59333b5415c01e52f942553c65ddeadbde859b1ab. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/CA5KR1907614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cdf4d6fa0dc2f13db4c6d892a2f69cf30b29f3f0704b1e216d15d5c04eec1b2. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/CA5KR1907616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f607e0579a8050deac1f4e01da3d62d0a924f8dd4cc8c789dd6eb9c01d0a880. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/CA5KR1907617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78862d57b0d14cb1e6e7504c8643bef67b0eb95958ed4d609700322815a77a3. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/CA5KR1907621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4512252765411dada22cfc0d07ce743f5a9dec3a4e0bc6586a034a5281bd70b8. 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/USL4R0703582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08d42969e8c34f30a343cc815f472e64790e14392fdb7e73b565d31c916648e. 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/USAE81282922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f97c26ea023ad312a3148b9d18698eca382e0ea2fc888039c271dd530191774. 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/USAE81282925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e514863c16227082c97d4dc0d3b15125d0fc7a4b255760392f64c57ea2ddbc9. 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/USAE81282926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64cbfba7ed2fccc3494472cf81a6a0eba5b19309327244f2e9dd0768b9a036e. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/USAE81282927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6492d9978e228b293b06f2715da5e963ddd2aea0e60d94ae25e3d9a1c16e03. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/USAE81282928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352c7335245debe0559b1ddb69d1746d13fe296617daaf12eadd02a65eff88af. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/USAE81282929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25c0fb1db9e86401a9932777fc6fd2b908d80972b1e636efc6474699c8804a1. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/USAE81282931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca9f049c191f026854d76a11415211e946999dff5b9559a275d076e2690dcfd. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/USAE81282936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed90926c9c8b597c61ed3f25b849310132dc8fe9ff538a82433a7d01608117f. 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/USAE81282940.
Black Mask (Music from The Original Motion Picture)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75acf916e5ed8737dfdfdfc6f29bbfb357ad53a6c78a3bb5e4c4d60f267db649. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/USTB10301023.