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 0x0582d9c7f15c52da552b6a7528d9e93d58faa45efd1ae8f8298c10b5ac14c1ce. 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/f3d19936-bee2-4f7f-96f9-fdd8e0ee11ad.json and https://artists.proofprofile.net/proofs/artist/f3d19936-bee2-4f7f-96f9-fdd8e0ee11ad.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 0xf11978f9073ef0bc6238c5ddb2e2fd7b7b91206d7bc08706cf3cc176437dbbd9. 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/QMCE32101045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7639d1ef301031b94036055795e716b988ad354feef1693f3c43e4a1b9def1f0. 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/QMCE32101048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1c8dfa50e028cabceb2e9f2021035738ebe4aa57518efbd11601bd769e5c39. 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/QMCE32200266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b3a07702d76d0114e625cb2d62b2fc382b72d64b784139477450dbe6da3336. 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/QMCE32101052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ad5ca21db0885b0e4ac74d0ac26b19def4d1490abc321d86682a1883626f8d. 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/QMCE32101047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d2027e596e1744745352f4013d3fcd2fe1fbbc0d0889dff4672a6b59e1cfd5. 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/QMCE32200267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0556afd8f652c51e79e09f4768506cb4bae9d72cba06a111bf999385aeed2ba9. 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/QMCE32101053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc913ae3a630a067bfcb4a5951b0ced2fa44219d9de4631932710932d678e42ce. 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/QMCE32100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e44e84292a19ca60e20f34fd5eca5d2e1f8d1e26799f0f095905ab48988a97. 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/QMCE32000140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28707a08cdfd7bbc1db6eb915d4e89eaa92ade3c5bec87fbde1ed5c7918550b. 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/QMBZ91982764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc913ae3a630a067bfcb4a5951b0ced2fa44219d9de4631932710932d678e42ce. 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/QMCE32100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d19e37de62eb862a5d4cd10e7d6e32b863e98854c3ffc4e16ffb0563432a101. 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/USAT22106825.
Warrior (feat. T-Shyne, Lil Keed & Big Sean)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac304a615274bcdba24364c314127671f90adcfbb2d0629015b8ad972b6997b9. 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/QMCE32100204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac304a615274bcdba24364c314127671f90adcfbb2d0629015b8ad972b6997b9. 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/QMCE32100204.