Héctor Varela El As Del Tango y su Orquesta Típica
{"copyright_id":"0x7ed7f93aa1facf3acb782c5b7a31624a55b9e593b78712abe3db31d74db6cdb6","name":"Héctor Varela El As Del Tango y su Orquesta Típica","registered_at":"2026-06-20T06:34:16Z","symbol":"NIM1541884","token_address":"0xd6db58605f4ded16a242dc84a443d3514cbd2344","type":"artist","uuid":"a3f9eb2d-f817-4285-88ea-831f86c237a1"}
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 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 0x7ed7f93aa1facf3acb782c5b7a31624a55b9e593b78712abe3db31d74db6cdb6. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a3f9eb2d-f817-4285-88ea-831f86c237a1.json and https://artists.proofprofile.net/proofs/artist/a3f9eb2d-f817-4285-88ea-831f86c237a1.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 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 0x1c0f1fa2bc48b3d5f77e2bfd550a8fdfc183deef8d89ea257ebd871e8d1e2981. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/ARF109700669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1087dff3f508ecf11a576478b9e5fa6ae6ea3df63f7dd6b0937f74abf2f8228b. 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/ARF100100478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42c9652042dcdd00fb08faceecc151c62a802f024f659376a6df4b5fa1629ad. 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/ARF100500090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0f1fa2bc48b3d5f77e2bfd550a8fdfc183deef8d89ea257ebd871e8d1e2981. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/ARF109700669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0fadacbb2f046ed29eb243ca2a5ec2d5ed9592e5ec1df7116f3ca8d70affe72. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ARF100500095.
Nuestros 30 Mejores Tangos Instrumentales
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137c9cc8653062cb3d5fa2f7870cfc4150722b16bee56f08f62a825440456532. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/ARF100100246.