Ignacio Berroa (born July 8, 1953, in Havana, Cuba) is a jazz drummer. In 1980 Berroa left his country during the Mariel Boatlift, moved to New York and joined Dizzy Gillespie’s quartet in 1981, beco
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 0x838aaab781229b02c64e142ef62f7cb9076e6ceede5b7c5ef4bc60563ca72c56. Chain 2 (Bitcoin): anchored in block 954134 (2026-06-17T19:41:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7e4ea92a-3325-4193-9630-4161a680e62a.json and https://artists.proofprofile.net/proofs/artist/7e4ea92a-3325-4193-9630-4161a680e62a.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 0x5d00f3e329148208d6e01489fa7fe85f3cf4aa4c1ed0123231934ed0f4547a50. 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/USTE10446202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1de789bc91e26d7186f44a2017ce5aabcd4221727c8d93a9cb8ce5ebafac243. 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/USTE10446203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4beb70491dbca2ee01b79bbadc5eeff5f80b13507006b9ef19ae40a9fa7505. 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/USTE10446205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7749194ad1b3971675712540f34da84485d015e2beda5e742dfa464f31c375a1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USTE10446207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1de789bc91e26d7186f44a2017ce5aabcd4221727c8d93a9cb8ce5ebafac243. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USTE10446203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7749194ad1b3971675712540f34da84485d015e2beda5e742dfa464f31c375a1. 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/USTE10446207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c13717f2e1a9df33d3eba2bab732d904feca49459589c91bc2fcbd319a51a6. 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/FRX761555716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f23bdca624efa953e446670fe651a70f0990c4bde15724f1eaefcf94f8dae2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRX761555717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9ca763a3128fbe86134f9181daba2ed57d6ea7e93bc828a8b08c69bb88b9b5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRX761555718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b69716a1d22a5642f540baeacc968559adea9fbdc6e59df417d9b8a6c23cf6. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/USTE10446201.
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 0xa75461aa659863fd3ab3bfe10dcec0844ec80bd126ee3870f563f1992e865dd6. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USTE10446204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a035af5708b13cdf911fd4ad83f639463f4fdb4c4e790cf2be4f733437d5d76. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/USTE10446206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523c8f5602971f109e7555723d60982ac8f4646d2b38409e0b66ffc4feadc919. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/DEH840800167.
A Lover Devides Time (To Hear How It Sounds)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22817de2e0f26521e6f88d114f2c94188621542358643f622fd1b254a68af4f. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEH840800170.
No One Gets To Transcend Anything (No One Except Oil Company Executives)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf603126a1137937117b70b8f4491f7eee3a3db389aafa9234faacaec71ae519. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/DEH840800171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34df03a8f7485a7b1dca6ad97bc5f7da1635e7f24d9312bd393f9fed7301c06c. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/FRX761555714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x073995d09f9197a3b20092429d42b5c18e5feac40c802a26894a0a83a1c4cf22. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/FRX761555715.