Quelentaro, previously Conjunto Quelentaro, was a Chilean folk music group founded in 1960 by brothers Eduardo and Gastón Guzmán. Original members also included José Leppe, Valericio Leppe, Eladio Lóp
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 0x0e05d0a4412b86dbac3bafef17dac1bfca06f81a51ef32749bebc9a23db1ad37. 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/306f1187-0037-48c4-b1b0-f47641b2c036.json and https://artists.proofprofile.net/proofs/artist/306f1187-0037-48c4-b1b0-f47641b2c036.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Coplas Libertarias a la Historia de Chile Vol. 1
Coplas Libertarias a la Historia de Chile Vol. 2
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 0xa62c3f9c7113c86a35d7f6b3fe75ca4b145fa8e3ba9116232bf0864958fa3236. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/CLUM71901477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293dbc55229758244a346f6f9cbaee8b405c978ddc9b1443bb18e9bb4f0bc87e. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/CLUM71901478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2804e4c4ea824e1536e6e83921ae248f0a259ac425ef324cafaaa274fbf16af. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/CLUM71901479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6406afdde73c78510f9147346160478c38130850ec11c962ed8160767c3d2e20. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/CLUM71901480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7c1ec32dd777189fef988ace455b6588273a212bbb8b97c07cf1147a1a2150. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/CLUM71900864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe517702e5655230eaf346b33a9e71923305ccf7e05aa0ddce6737ed22d018111. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:51:32Z), 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/CLUM71900866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39ce60a3deb96ee4167f992b43d559402994f59d1fc4b92a0c506e3db3dcc88. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/CLUM71900863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4eb2ec8c2e9ffecaac79bbba67383d0a132a1ec891aa3cd432664e3669ebf86. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CLUM71900851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301879acc8b33270e68ef2031e12dee45a9acedc5ed7bef5067ab9f018a56285. 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/CLUM71900857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e0ad8f371df7f01208ca718709cefa131a5d306f61b4524dbe314137abbfc3. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/CLUM71900856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b242b99b00acdcee2ca4228b6ed9f0b94d4a805721843eff8b8a7bf118c901. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/CLUM71900858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f7ba7809a7533c4638d3a5e9bce2c48c789fea82af1c8dfd589330d2523235. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/CLUM71900854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33ca929e1d75053a7dbb7c03145f44d6beb75de206c8b07b2576725e215a900. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:51:34Z), 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/CLUM71900852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbccc1d1f3379fcc5db6a8f633f5889dfe0bf21a54b5929ffcfa963f96f5d0b60. 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/CLUM71900860.
COPLAS LIBERTARIAS para la Historia de Chile, Vol. 1 (Nueva Versión)
COPLAS LIBERTARIAS para la Historia de Chile. Vol. 3 (Nueva Versión)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb645851b37dd43be2743808d5b242b8ceb6ae81882b7fff5229884ca506e2fc3. 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/ES71G1746660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x525f8f7824dedcb9c0b307d20c618315ed392342789b317bb4103f978f1fdc86. 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/ES71G1746661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce772044637596b630302bb6a521efc7396942e93d415e11da9c7eb930f75493. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/ES71G1746662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da8745e9ad51fb515a58544f0432741cfe87e967ed8b32acfb763c1a691fe21. 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/ES71G1746663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f809e9b53d7a362687870505c20e47bbd0f70d6ab00d7626c22cf5c1261be06. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:33:41Z), 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/ES71G1746664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3413bbb4b8c7c1216e3a57347ac56660440005b1cdb02d294139f6c619663358. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:48:38Z), 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/ES71G1746665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486b8a4092bac29c712dfe1e3b8af781f7d750f00bcd817e209114f6fad8b2df. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/ES71G1746666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46e60f3e11000a54dd1d2953e6266f427c78ed8072d9c4c705bff5f42f1716d. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:23:41Z), 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/ES71G1746667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda1d027d0c852f236e2e41c7997cb24ca3bf0372d62d5abf771932c44612d93. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ES71G1746668.