Sebastián Vergara Tapia (born 1 March 1983) is a Chilean geographer and politician. From 2023 to 2026, he served as Undersecretary of National Assets under the government of President Gabriel Boric.
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 0x8395381cf9f2d4bb7b39f7d493f2c3bcd45303300e70ee7961c18a1505410a32. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8aed49f0-d3e3-4e53-aa02-1427fb2f10e5.json and https://artists.proofprofile.net/proofs/artist/8aed49f0-d3e3-4e53-aa02-1427fb2f10e5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Las Cosas Como Son (Original Soundtrack)
The Mud Woman: Music Suite (From "The Sessions")
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 0xe0b7d6d1b93fc5538f9f9bfe2d38eb2b04549da2ef318307201a741bd0a018d9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES71G1738297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f0f68e64bafadec3aac25ea56979ccf4263854926ea53b921ae72d0021ccf0. 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/ES71G1738298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0c2e99c4ae660443757e1761a38bc935c54bb215df34b735869e1f9ec45bc1. 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/ES71G1738301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411254dcc2a3709206bc343ae03e4e3ae636db749d8e922776a6c52e27b42040. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES71G1738306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde7d8d86669ede9c3750870644b6e95addef8ca5ecf1c84d5bc3b678efebb6e. 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/ES71G1738308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e579eb62c7ef293d46a7f5c51c31a9c616c6dfa91c3f355442957a3af9afe60. 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/ES71G1738299.
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 0xe8e01a92858578f59e5a7d3dcd9707b9599f6f913ce9644785044bd20cbef05f. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/ES71G1738300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4877c6e67125fe697400e3499b9c81a006b662637cbcf27ad9bd41621931187a. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/ES71G1738302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6afb3b1b88eccb803ce427fba6824842c8be2b641ae054894b91e641a3e4526. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/ES71G1738303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612756fed469c982ad6d7fca908ecbfb89c7bc63ae3176539c27702f35434b3d. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/ES71G1738304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340c0e765696c0457b933b2cbb5d84bd620326612442c85fe59dd71ea96a6b45. 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/ES71G1738305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e486511f0b51866688a7c51adc78f0b13a2f280fa9a4b22576d9c14a29cfc0. 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/ES71G1738307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43d0a4ec6777566031e1140c8001431b0ada1a3c622650fe3fda071b40e9dca. 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/ES71G1738309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc1103b5f8f0e617d9d17846547044fd5ffd3e8ad1ee395117a1b4eb766a528e. 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/ES71G1738310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3226d2007cd5005138e1fed5818b324611da1df230db9858bdaefa0991c72322. 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/ES71G1738311.