Andrew Lewis Cooper (April 24, 1898 – June 3, 1941), nicknamed "Lefty", was an American professional baseball pitcher and player-manager in the Negro leagues. He was elected to the Baseball Hall of Fa
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc1533b85fb6202e02f240fca66578b8c798f0c8c237b6de4641a4e3ad7c4ae. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c84ca176-149f-48d5-baa4-a8388de160ae.json and https://artists.proofprofile.net/proofs/artist/c84ca176-149f-48d5-baa4-a8388de160ae.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2e0a5b509b5f6596489d6687f730c849924a92382bf259bc3c27f5b07f9f5d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBFFM1710002.
Here Comes Another One / The Perfect Definition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f0b80121f7e7aaae871c5a236b8f945eec9418383186b38280e4bb38a983de. 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/CHAAA1705491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271f866e02fadaa603a64422e9e32bbadce85418d403ce0be6c924959fbf7096. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:55:16Z), 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/GBFFM1863969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6245acd7821cd83c117a3b00467ed5ba7ca5cc21d7a02ce26da1c5a2f4af6c24. 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/DEN971500025.
Funk n' Beats, Vol. 4 (Mixed by Fort Knox Five)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73feb08bad5c9e21d488f6b1589f2fd658ae0ee348c8ff5aa9f70e6165ecf326. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBFBC1701592.
The Craig Charles Funk & Soul Club, Vol. 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83c776650e731233807a7d2d820c21224328fdacfa890796d4b758db49e1ead. 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/GBFBC1701568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f47a6bd7ac7db3bc7332f76c96fd2a39b99884865304fea4b1bfbcc3cb81a17. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBFBC2402183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aefd0580e9cb47b4670dd1c8293d3e314ffefdf27791aeb8f2b0a93cb52cbe3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBFBC2001862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7565b97d1ab32be3c76a2252eead564803662de71492c09edf88fdd4e3ceb378. 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/GBFBC2001868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3160b28e36b37e31a308a54829ab6d241d650a13e80cba7b8b87c99212023cc0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBFBC2001870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ca4af134b98772fac1cf6dffef57be6ae1530e7d90c7457c5e407ac181b77b. 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/GBFBC2001861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58acdd5c4cecff7120955b60388ed490a076d700bef3ab35d9e1d43b77aa3449. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBFBC1801704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fbedeea4e380a63ac2ab1ab6cc3a0b2ac633c52c299cca78212c9f33c93780b. 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/GBFBC1801708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966b84ce3c8c336a94585bb27c253e5d9ed4fdcde69b8da4f79485a9786f2e4c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBFBC1801696.
Funk n' Beats, Vol. 5 (Mixed by The Allergies)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79020960c94293eddabce6228efb855cb87ebc5d66946b8e52d4d6849386694. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBFBC1701626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb901b83c9efaacdfe82b456b84584aa093183279cbc5022f2e917b3d219d72ab. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/CH6541726002.