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 0xeb0730383c04476c66f1a75149d87585eb849d578a26a0277b98d28f88123856. 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/c788e449-7aba-43cc-9a6e-548b04ca89dd.json and https://artists.proofprofile.net/proofs/artist/c788e449-7aba-43cc-9a6e-548b04ca89dd.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 0xabbae9151235054c9c9994972b2fe86a229b858c17522c1f53538142795b47f5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CA5KR2181034.
City Of Ezra - Buunshin's Fallen City Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ce0cf7500d57c3f1728e8ef39951b69cef50b9fc8affe9092f04c598908f37. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/CA5KR2181037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd90eedd79df37123a90329a26245cd9cf3b77f15176ffc3f7f9fe975af200d6. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/CA5KR2181036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7488fbb0012de6bcb493ab22fd06aac68043b52e0b8adfdd7c163ff0d60ba7. 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/CA5KR2181040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c37fbbfb37f1b66bc722b44b3d79d10469433a9c62df5742f335b847bf43a29. 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/CA5KR2181038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4196f493423532534e59f4d3fc50cb9d683b6a61d6e0dd4255ca4f5d2b721d6f. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/CA5KR2181039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13eb14e5400895969ad3210ee34f427d110c02cd1bc7a244fbd4dec0b06a5a7. 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/CA5KR2181035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792df01b2856e3ee6e9b4a63f8346b52a81e9db7ed8eff151785ab83ba03cad1. 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/GBEXH2400086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3989c9b859a1563c012fba5d86241838578bf59ad40c04101269c2f78eaf04ad. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UKU932290048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaaf5c69e30df9a9876d78c27230ca7b7c17362574be3e2623078ee0931050b0. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/GB8KE2053088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd90eedd79df37123a90329a26245cd9cf3b77f15176ffc3f7f9fe975af200d6. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/CA5KR2181036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96280849c372cec9717f8e77b6d76a9499c6b30888b26862a83ed42e055702a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/CAUM82100478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e539b573a38a1539baa838b47c2189ac7fdf00fb31cac84b5c1b7c27f318402. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USA2P2035891.
Spider (feat. Tida) - Rohaan & Gaszia Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf53402e2ffe72c30a4095dcaeaac5c9fed02bdb002c2d6d291a0740fd9bd042. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/NL8RL2325959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7488fbb0012de6bcb493ab22fd06aac68043b52e0b8adfdd7c163ff0d60ba7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CA5KR2181040.