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 0x776412acb424a0c9d2fb55b8e1e1ae6ca2d6f8a1d6c3a45e491465e326cd071d. 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/6dc06413-c2f4-4810-ade5-9b5d35e763f5.json and https://artists.proofprofile.net/proofs/artist/6dc06413-c2f4-4810-ade5-9b5d35e763f5.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 0x2edda97bd8474b6c68e69bc9ee50a9c6b049dd98319184947999fd2af53fe965. 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/QZTPX2456365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe1be387a097ed0ffc8e742fe4fc44fddf0866c3c969e524ad712ad9a1c72ef. 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/QZTPX2456367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b85c7fb8d2ae39f7dd61e866770169438ce3a0a286648a25ab299b1288286b. 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/QZTPX2456369.
Rap Chileno el Sur Es Hardcore Godlevel Enfermos del Rap
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fc0954599c19e57a7fdca7c9a99c242be8eb222f5368256700bfdd98d70720. 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/TCACH1535386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3a48d6cd1daf145413175fbc599bfe61b68851ae1e0204520beebf8709e0b9. 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/TCACH1535389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636b5518e2165848e3488700598a98f3bfe7b26412aa5d99dc6098eb36738586. 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/TCACH1535406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e6339e5f9aba52922d4ee07f792a4137eed2544e12257406ee1df3ad553381. 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/TCACH1535407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6e3e8f6266d1812b153b85a129c554b95de4bd23a8f128fa99b69bb8fd3826. 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/TCACH1535379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa393478cfd9c92e5d940d901fb723932e31a950ea4755b85aa0ffd51400bf2e4. 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/TCACH1536596.
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.
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.
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 0xa8fb45f634e8ddc27eee601a9a7ce8e98c934714f7a1c9109659aa33e482a8d2. 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/TCACH1535409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba09c629c0e34df66c16c378e47ffae7963cfe1698a0df87349d51a3f320cfe. 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/TCACH1535390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2f6d22821d3c416a900dc231a712447797b67dd0b18b8a1109e7ee1b3b837d. 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/TCACH1535412.