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 0x3fdf2ff939f8420114870e88e32de635e3cd8e858fe92f6a59bc12b02b4d5126. 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/e93d8721-c1f9-476a-8c80-12af34207cef.json and https://artists.proofprofile.net/proofs/artist/e93d8721-c1f9-476a-8c80-12af34207cef.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832ac43051a365b5272e0b8238ee09a1b27db95d0f2929617f31dc351e6d66bb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCADC1767569.
Avispate Hil (feat. Byrone & Don Cruelda)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a5a53ba30b952cd38ee687444821384837e43047204fc78e5feeca419caaefb. 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/TCADC1767573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3633f460b73b9fc57ca39e657b0cd82269b326b74399736ac9152a1eba64b2. 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/TCADC1767578.
Muerdanse La Lengua (feat. Massibo & Don Cruelda)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972dc3e3859881ba03f2528e024021dcd09a0aa73caeccba2d5f5a37249bb180. 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/TCADC1767583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a176941416566d5251a59c8a4e03985bcbfff3ec73a383f5ff68ef732a1cb6. 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/TCADC1767587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9ec532f73ef0992f9eca957d0bc8453a2426e88a2d357fab7e7fbfffec778a. 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/TCADC1767589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb828d487ea56262515dc951bbadcd95a951eda17995471c327fbf70ed83bb5e0. 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/TCADC1767591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3e25bb197d2853b78d9657278aa36f264104def9fa780e199813a86e1a116e. 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/TCADC1767594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89dfe087b7f25be302cd5b9e668763df2c69c332c269b5b0cb8ea35a8403358c. 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/TCADC1767596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ab064d61bba8b800c3757d8323f0d7e659cd40b0bbe05ea56972e1013e7b49. 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/TCADC1767603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3c90cecd232b6eae14c8364d00f6afa4e539ef7be4fa174f0ac2c25570239f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCADC1767607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24307f12a96380a8f5e69eda37ecef15cfe53893b4a38862907ec58b1bb67ce. 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/TCADC1767608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac154c9e1155600504f3eca37dd8789414985628f3846f033ac290e253df03dd. 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/TCADC1767610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90bac496eaaa640764abbf4e417c11ffb5dcc0e456eff39cede6fb7af6febed. 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/TCADC1767616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385a3b3df3674cb7948d9270869fd74af2144a0728376011c4dad6876c1fcc1d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCADC1767623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db57b7ead6d8d62048f8d4c8c7f82be8777aa28ff33e8774b1a457baeea1d9d. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/TCADC1767626.
Rap Chileno el Sur Es Hardcore Godlevel Enfermos del Rap
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa70bca49ca8df551f4475103564998c621168e8b34fc655fb68344e07a27d96. 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/TCACH1535376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6e3e8f6266d1812b153b85a129c554b95de4bd23a8f128fa99b69bb8fd3826. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCACH1535379.
El Sur Es Hardcore la Venganza de los Mcs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea217c0a75ff5f5fea89e014c7b495b69935b8671b96f3d588b0764b42232dd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCACH1535383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e6339e5f9aba52922d4ee07f792a4137eed2544e12257406ee1df3ad553381. 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/TCACH1535407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fc0954599c19e57a7fdca7c9a99c242be8eb222f5368256700bfdd98d70720. 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/TCACH1535386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3a48d6cd1daf145413175fbc599bfe61b68851ae1e0204520beebf8709e0b9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCACH1535389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636b5518e2165848e3488700598a98f3bfe7b26412aa5d99dc6098eb36738586. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCACH1535406.
Enfermos del Rap la Enfermedad Se Propaga
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f1c0a1a7df50aed863285472b5d3095c10c9503b0067e7351c361efe8d0bcc. 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/TCACH1535411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa393478cfd9c92e5d940d901fb723932e31a950ea4755b85aa0ffd51400bf2e4. 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/TCACH1536596.