Los Warahuaco is a Colombian musical group and one of the most recognized in the field of tropical music. History Founded in Cartago (Valle del Cauca) in 1982 by Hernán Rojas, when he returned to C
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 0x632c60f5d6d05c07b7de751d34ef4ee0c2f0a23f1c43e12e4651d0be506268ce. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/73e935e3-6b96-49bc-8984-f2763f3f9340.json and https://artists.proofprofile.net/proofs/artist/73e935e3-6b96-49bc-8984-f2763f3f9340.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Historia Musical de Hernán Rojas Con Los Warahuaco
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 0x7a7479657ada6360306119fee3a493318181fb1fae8eadfb2141743b0feaecb2. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/COF018300209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a2fbc649f6508fb13111eb4048178d850ebc5344df668b488ef2b5965823ba. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/COF019601034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a8037995bcfbc2e41c4513c3c96fc54a3341b640681c90cf4ba0fafd238582. 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/COF019602212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c818f97889329a8818866faa54d2a8871816f8eb37d3a3d397a84db5acab49. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:56:16Z), 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/COF019601044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9169b6e39f6d50a7c0e12c5d8db04ca72dee94b56657fb42f5ccdd788d00c54. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/COF019601039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7bafd7e358cd1cb914fc56236028a1a45c63c35921d12c446d56e4d518401d. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/COF019601038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c709bf34cb21188a5d11c3f64bc3b22a2efe51598e84dce37ce60647107f12. 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/COF018300215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74710b06fecd11182be56adfe9b16585f2bff7ed2fdc5a454a5460011a084393. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/COF018300212.
Historia Musical de Hernán Rojas Con los Warahuaco
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de0dc2c9b7bebb03692f9bb62f88e3eb33552be07f419b796fdddbb536586ce. 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/COF019601040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a2fbc649f6508fb13111eb4048178d850ebc5344df668b488ef2b5965823ba. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/COF019601034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719892b861d41b51b4756f85030893028e98f8b65b3388a95325a2c56c38c40e. Chain 2 (Bitcoin): anchored in block 957653 (2026-07-12T04:35:02Z), 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/COF019601037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9169b6e39f6d50a7c0e12c5d8db04ca72dee94b56657fb42f5ccdd788d00c54. 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/COF019601039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de0dc2c9b7bebb03692f9bb62f88e3eb33552be07f419b796fdddbb536586ce. 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/COF019601040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20da705aee4545f01385b07b9db63f26b071708101362af77cfd76068c9f0b13. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/COF019601041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a5045465515f50cb208d08a5db3a3ccb7a9e42a74480a16629158e525ad48b. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/COF019601042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d943d89825ef4c41dc871ce7d00c8e3589702fff75b74c57dff515ea022827. 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/COF019601043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74434772af469432168daa16ae7574b0cb9911ceeb8f7d6d1d76be9d112b422. 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/COF019401061.
Greatest Cumbia Classics Of Colombia, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74434772af469432168daa16ae7574b0cb9911ceeb8f7d6d1d76be9d112b422. 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/COF019401061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d943d89825ef4c41dc871ce7d00c8e3589702fff75b74c57dff515ea022827. 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/COF019601043.