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 0x71777b4d5ed451310207eed2702b74cd5c46cab630caa9746fe1b85b70acedac. 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/5dd0de88-8d22-4c5a-8e39-d9b807e5ab53.json and https://artists.proofprofile.net/proofs/artist/5dd0de88-8d22-4c5a-8e39-d9b807e5ab53.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 0xe25c77c8c925e128945bc31383d40a25be72c45f33f305a63aa8ea7c27b59747. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USCG62000063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6381de6a453a445f3dc08d7d2c3902e380c59d66cb0e9326bcae1b25f64881cc. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USCG62000073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb704b466fbdfe0ad6635cc2d12045d6ddf9505f56e241510944f48c1fc8471. 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/USCG62000080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ef62b674c52aee39cefb5207b7d77694c49ec7e72f18253d6c25c50c2316fc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USCG61600043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643fe5c4c3eb320c0b5c865a5ebb13aee2d674c58028184d799212d628ca1114. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USCG61600045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46cd9d943f81c04fd217bf48e0029b60ff17862d11aaf6520c892d81e5d8eba. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USCG61600049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80f4b39f671e0a1ecd107798391d6430aaab9788c3a1e27d9f26f9a6011105f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCACE1545116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19961e6d571a2b19f7020f4ea75ebf2f70781e272ac7365383c5545f55eb063. 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/TCACE1545140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe1a393ad1ecf26c9d4320d66109bd45f10cb48e2a52503eb650c1643aff1d3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCACE1545141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df0a860d6f01e0ad6334866b812b327933f1934b2da47c478b5e5def8767976. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USCG61700301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86025eaf2165da43fffac8fac92c7f9eb9828a431d9c805ed62be77f92a35ba3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USCG61700302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e856d1ca6c920fa162e4f0a6803c241b2289814342fc995e295ab47f9f79c0f. 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/USCG61700304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01605490303bebb5c87dad6980c6308b2b411de213a95212070cbfc537f8944a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USCG61800109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98682e6508700d1d4ac62019f1ff1d65dc023f4edf9cbd52f4ee06c91fd7f2a. 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/USCG61800113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a94429918bb60f3f34577c30ffd993ddbc4aae387c91d0018e5ddbf26a7c69. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USCG61800114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672c2cf2fa714a52c53512ffca49cb13665b468b22195178b6ad8c69ac3aa1e3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCADD1722777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea2540b5f8624305872d21d1ff74f9b55c0b56ddff2c9c50686552845e53165. 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/TCACT1679444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dba5befabe6497831225884b4a5e27692b93036f8c2e10738974d4fb2d85090. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCADI1720723.
Su Nombre Es Amor (feat. Banda Horizonte)