Carlos Alfredo Paravís Salaverry, known as Santiago Chalar (September 25, 1938 – November 21, 1994), was a Uruguayan physician traumatologist, poet, songwriter, musician, guitarist and singer. He stud
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 0x0271b6b9f75752dbe78163a28759d947f366f6ae28130a5d3c8189965c9fecf8. 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/11a80cb8-1d12-4e31-9560-c0f0c8f0dc7a.json and https://artists.proofprofile.net/proofs/artist/11a80cb8-1d12-4e31-9560-c0f0c8f0dc7a.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 0x1674b7771d76ee70a10d4bb51686763a0e9658176cba13c409fdfd09f80d7b45. 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/QM6MZ1410816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f58518dbb0dbdb6a88434c06f86185946af6435109a6ea93fba03b5492bfd8. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/QM6MZ1410822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2b5dcbb8d24dc899ab2a9bf3c81fdb61c69769f64cf2721fb98af6d93d36f2. 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/UYS050500075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e0b151d1da7af197b5824985558a57ad95c46ef51c007789858d39642c5501. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/UYS059500100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aff718003bf33e1a87e345e1207322ffe75090456c9c131e9a122de95a19527. 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/UYS050300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1317ee3bdbf23cbb8fdae98319b3143ee1bfef1ab9aa0c58f0245be3b38e1a4c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/UYS059500007.
Consejo a los Hijos Varones por Milonga, Cifra y Estilo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36af579a83a56d54e891f41380e65252b3ed0ce737ecff773799ecdad9d05683. 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/UYS051500059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aaef07269ee26b3eaa394e842bf0f9a2436bb12e4bbd1f9838f78506f822e00. 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/UYS051500061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b853eda2e9bd04fd10f1b061c2bfae9986a0398674c4832d36880a28b26b098. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/UYS059500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710fbdb29677b9f900a9f816f1d8a66560ac181a402c0ec871457d75cbfdf124. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/UYS059500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0afb5d3d7a480e62ffda929926433c00dd25c59b8e4e7045dc68bea6dd3e8de1. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:16:42Z), 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/UYS059500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30403be25c8e4756a59318cd44bf62818a8b3fa266da13020b36293e0e16f5a1. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/UYS059500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbedd999d9dcdd290c8fe4aaeabd8b4c8dea1f3c949f1af534aa6852473dec082. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:53:16Z), 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/UYS059500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e4e94e85054bddc2ec2a91c9b5d036ee2b309340ce307ef2ad794dfe96b581. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/UYS059500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea643d87f3d474f7fd3d390e4ce6e6158ac792a3875b640360d60946a9b2943. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/UYS059500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a5c1a91f1df6fea69bd97faea81b48261131adbe095d01986f1063b282816d1. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/UYS051600499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04fa2e730a65a89df9d8c67874200be7cd7404668ff2c950a69828b66ce94648. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:28:37Z), 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/UYS059500123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d055a7af36de90398ac168d0339570157ae6225a6a20665ba892e7514fce4d6. 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/UYS051600502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86f6cd3216d60df0f429c92b1724cf037fdbd58e873b12e9b9c098ad2c4047c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/UYS050500071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15aedccea975c5a887060dc5c05b0e196107accff219971fd26789904d04471. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/UYS059500112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3996c613c227a45a6caa6684554dbb8ac0ce82a084f801fae7c1541dfe605716. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/UYS059500118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83d8ad2f23ee3e4a1a489c20b3a72a4d45a0c6258ac089d65b77c9fd47bcaf2. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/UYS059500126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e25dc0de972b4ee1229b1020a144c79400cdbcff76db5bac4da6b3f184753b. 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/UYS050500067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2490d80b32a30815ce5cccba2da646e16716a9cd70e043ab32605c755e16553f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/UYS050500068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd129e21e32fff2104cb0bace114098385084f5cd5759a71e2392cc37d601d9e1. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/UYS050500072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6aad3a7d39ab1bddf9225f32cee66742a2531ed49bf9b046a96b0fb8c9eaf26. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/ARF107400139.