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 0xb272c2dccbab3c2960fd911b37226c14bc91032ee1a52997f99518f35a637d10. 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/fb8593d2-3839-4401-90c3-8828b7f95849.json and https://artists.proofprofile.net/proofs/artist/fb8593d2-3839-4401-90c3-8828b7f95849.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 0xb0760638745b83c8ee21f8238475952295eef8e9d3c4a91388801a313b7b6347. 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/USUG12306666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5405c0e6c423e068b4a914b6aa6f2ac82c781580561177de1bf8b815fa86d7a4. 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/QZRP42228012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9de52fdbc870cffb6ed5176b24de07940148f7b477db0a17790125324160e21. 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/USSM12308655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a1f6ee0be8e16dca3da78f50d05943e3ef29024cc1cad62740c3ca629b593b. 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/QZTLA2423172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a1f6ee0be8e16dca3da78f50d05943e3ef29024cc1cad62740c3ca629b593b. 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/QZTLA2423172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd9d4ebf82533dd8329999253b2f0f6e5ea242cef2e1c0641d6a4bc53f0b44d. 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/QZQAY2431256.
SALLY (feat. Kyle Richh, TaTa & Jenn Carter)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3409c0b796da5bd950893a55ccec10dcc2a54c57229f17fb03bf8ffa618c1ae3. 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/USUYG1436559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3e0e3140037a7f6c0037edea0dab997f7b8d136e0617a885436118422beb6c. 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/US3DF2274152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c0ac6cc7ca8f6aac7d4bf9fc7a972fafcdd939db4d213514afdc5f9e771273. 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/USA2P2451257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81dec2ea46ee7cd2dd02b0fa9a7e4a2f4a31fb0a2bad2f0ff94ef0b0c24cf6b5. 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/USUG12402234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4caeac1f262f9be73b86910365ede346bbfcbeb25ad5330cd1a748cc474fcc8. 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/USA2P2416446.
Stomp Stomp (with Kyle Richh, Jenn Carter, TaTa & Dee Billz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c419d1d80255610d097433cb9fb39ddf18af1f3e9a3cb40a938824dca945e0. 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/USUG12308926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c11826a6f586adf5b24e9eaf2a2a8d6b4ddafa3c1645ac60ae94c82f801e8b. 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/QZTAX2356829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1792d82dcffba3fa121f1f698e0b2c6b86804a5e8a3e8b3f7a80b6bf5a6dfbe. 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/QZTAX2356830.