Tom Barabas was an American-Hungarian pianist and keyboardist. He studied classical music at the Caracas Conservatory in Venezuela before developing a taste for rock, jazz, and New Age. He died in Sa
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 0x03579f6814a65d4a038febb0be627e54b9454cfdbcc370bb08aa46f1e3b78466. 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/c69579e1-8fa7-4fed-96f5-9182bfc6d353.json and https://artists.proofprofile.net/proofs/artist/c69579e1-8fa7-4fed-96f5-9182bfc6d353.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 0xaf97a8b6d1195d0f20adfba24fb19599a26d7e22215427d522a27a1bc4759472. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USSP89214201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c03cd20d367898af7ac94be29622a1d8d687f1fcaec989f063fce98e04ecdc. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USSP89214202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3bde0d73b7392e9220031d74dba9e014a2833d465c49e0ed62fa3455b5c83e. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/USSP89214203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fba91100ae7fe374df447a95ce6f86b2bfce9e92b2b53cdda22a9794b5e5e10. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USSP89214208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53dbf2226061d9f3306b8239f334a8a3d11e555af4b09e604a905b6504cc0a75. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USSP89616201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44bde455096f20c3175ac44c7baf347e588d4b2933d3eb7a1a938360c9aba3c8. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USSP89817605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2519cd37131c0c4a929d4ccd114c6ae9342f516ed2cd320a3640581b8f9a4505. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/USSP80018202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a2f82ff50b7d84916ce040291c42623b5b5de6741c7344399ad219ac482844. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USSP89817403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03adf3be3a1ed292b88049a19b5ae43c649284e491096146ac4f31bc01971a8e. 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/USSP89817405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f6debaf0e869554e1b06441dbd615fdd9638001c24ff85108adcb57573333e. 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/USSP89817409.
Peace Through Music (40th Anniversary Collection)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c529443fa4ccc4b70349d0de7e97c33d925197759c0180041266561dc32d83c. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USSP81922908.
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 0x339b8d747adf5d9ca8a60a82baf228afb022762f8e8c115380562137262dcb57. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/USSP81922913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3972676e541478f15afcd1e73fb11c332e9c6c1af498f320fb1e0c0719464917. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USSP80218911.
Harmony: Piano Music for Calming Baby & Parents (Bright Mind Kids), Vol. 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeaf027af4778d8830e0a2f3c8ceb062de8cd099b491b4b0ddb653ab3e566bea. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/US3L61209734.
Loving Bond: Relaxing Piano Music for Baby & Parents, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde49792500da3a575c160812784c5b557f941f839671b8ff01e417ce50d9be61. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/US3L61210112.