thumb|Quique Sinesi in concert in 2017 Quique Sinesi (born March 13, 1960) is a Latin Grammy Award-winning Argentinian guitarist."Rīgā uzstāsies ģitārists Kike Sinēzi un čellists Ruslans Viļenskis", K
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 0xb0067904d8071c538c172a91c11d17a3161328ca77dab3faa5d055c3847cf501. 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/89ec44e1-9f54-4eea-ab32-48ad15a0f207.json and https://artists.proofprofile.net/proofs/artist/89ec44e1-9f54-4eea-ab32-48ad15a0f207.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 0x6431a9b7dfb147a13bb50ef03505022d3546fc448fb7d5c4c971524bab558629. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/QM6MZ1483160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6862229c7e6b599eb684d103b751d3a6bbd33c8364961d468d5cf507fa5dcbfd. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QM6MZ1483166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561190c8d6159d86a0ea2e9e4c650c2041dab626a94d20750de34fd857332bb2. 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/ARF050401395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306d51d2fa6ab670628e42542c05ab13556735b3d04686e169312c214858ff01. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ARF050401396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e26743724fcfd61d191a7cb06a40ffffdd0cefd315c3a08b63db4bfd6d0a3fa. 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/ARF050401397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ff2cb5814a8bac49726ca68a1dcc8cf04ff90e7b7efbcc2874f91e1e20fd0a. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/ARF050401398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42853112f1187859331e75060cc7d525d057f98a6d42f11bb61857cec592ce32. 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/ARF050401399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec41ea70db2ae994fd9893ccf684bdfb720a594c5497bc9b1317d84e97c17e8. 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/ARF050401401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0924aef755466dbd0b1aca42716a3b401efde6891eb81ab28558d6fd4ec2f354. 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/ARF050401402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe83fc7e55ba8b20321e938085571ea16107d118f90b744a01886e7f832efcd9. 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/ARF050401403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5fcf9817e985f4157196a2865376e3c2e7733d06b0c6176e41817a1ef2b332a. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/ARF050401404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cbaa224000f98d20db7413c795e3641f8e228507286dfa66078a80d1ecaf770. 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/ARF050401406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c43db3894fff2fab3bfbd9a861c5b160a21283f371aef2f9cd7897b0efce8fd. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/ARA100600042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3114d870575e5b60499ea67c12255a3c18fbbf1b2630a87333809485b6c5a4e1. 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/ARA100600051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011403dd61bff301fc9d20ff413252fd2ec40dfeb669b8ba0b0a095355ad35d4. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/ARA100600052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3729c38a27ba8025f3d9c1b853e8cfa5e75b6325708a6e04c356b4fb287f63. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/ARA170600015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150231ecd1861bf32b78b7d12376ee785c623e12d9d4399a430ac952398e1f2c. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/ARA170600017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755f281fdd5bfbc0c452084e57b6a1e25380b008316d5ee38d8a2aee74a663af. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/ARZ022500036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412edbce4cb2b87edfccfb13c789ba0c764511e8429fe6933319b8a66657c2a2. 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/ARL862200045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa850452d957eae7e7eb1eaf85cfab076dac7d47fa7729c885540115f52ba2041. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEVAF1500201.
Sonidos de aquel dia (Sounds from That Day)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a87154b72d00ce009a96f0ce96965483b30fead6e720fc84b0787ca20ee0e61. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKI190534001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f918a11ed87d403be5ab20856f45afad33f16b48b5b345c0aca77647099a87. 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/HKI190534002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35828aff92c8de3d1de3e0e0aad8f6de36412474c90b24465db86b68487120cb. 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/HKI190534003.