Steve Dobrogosz (born 26 January 1956 in Bellefonte, Pennsylvania) is an American composer, songwriter and pianist. Dobrogosz is the son of Walter Dobrogosz and Donna Bartone and grew up in Raleigh,
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 0x8f0750f6d9b11df210dcb3de73cb9e763b86d564572653a05b2463e0e8a13a28. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e7de5e25-2923-421f-929a-dc84abe008d2.json and https://artists.proofprofile.net/proofs/artist/e7de5e25-2923-421f-929a-dc84abe008d2.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 0x119ba60f7a5c165625723d743cb0f48f13e5b9dd15139c4f55b019b62941b20f. 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/DKATA1001201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290cf1012f11af8b9b75b36399af74c8f3112487be47ae34bbea9d89e34cf960. 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/DKATA1000801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678837e662f0738dc22ea8e320088ece6a425d86e37ea314d6918d5798fadfd4. 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/DKATA1002305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb99d27cd01413608c6ef4ba7e4a7182b5128fce9f5fe6c1c77f2bb9a11e6415. 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/DKATA1001206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64e770579cbc3964b57110262752b1dcc045dcd43440d48a324405f2144e71c. 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/DKATA1002307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd482dea0ec26329754d08c75bdec1a905b0047992f473f37d20305f196138cb3. 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/DKATA1002309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa9a1ceb781845b197eaaba3a7effeae2bc335b46757fc4fb46104faad65c2a. 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/DKATA1002311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6baf9f9dcf4c4e2f0edbe0b4983924314810da938d77471447c02a88c70b6f77. 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/DKATA1002301.
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 0x641d68cccd6f42b21f9fcc30f27e1d48228a9e6054cde96a718fef1b4cd30c77. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DKATA1002302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e838c24a65b44c4dc3c966bd245af6745cab1502eb586e3c4b372eae2db9af. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DKATA1002303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d9608e582e281415504b7bc48e1f1b425a617c5ea035fff9f5166f710482e3. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/DKATA1001205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637b20958c9dda1f06b809227b5381727c226f1266cf47e37fbe23de44a2ccba. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DKATA1001207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe453ff5d2788abf6a6c5c024d1de96ed683565d8f24d88341e2de3dce15785c1. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DKATA1001208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c0dde1df3ca01fe6c8e6594f638a187142682f114a936b4f8bb104b4949f95. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DKATA1002310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a25bf740f71858fa0f0d07e57349c0107b5f10ca23551fd2658b087425d783. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/DKATA1002313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9df5e761f7152d0b504b871158c391f691596eef908fb6d0a85745a711b1149. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DKATA1001213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508ca9880dca7c62681c17306ca1dbc8b85850997f5b5d8cf208f8c33e1dc1eb. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DKATA1002314.