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 0xbbc13cd369c5d7bc8fab105454b9be2982d1862e5efe933ff7228570a62757a1. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9a9c29d2-a9fb-49f5-ba70-885765717f32.json and https://artists.proofprofile.net/proofs/artist/9a9c29d2-a9fb-49f5-ba70-885765717f32.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 0xf3007b76a6b50515e58e02a486b8253cd11864bb38eaeb0e600278b9967e7c68. 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/TCAFR2197375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77157eea32f236ab2696ded1aa2a7555fc713fcab826f3caad6c7630cca48c61. 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/GX53U2027320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1ba84f61eb9efabfdd2be96f077e3766296f64ec3cc6934a99628530b2fcec. 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/QM4DW1535659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4611b2cc3de78f16428fa640998f31acd635eb0e0bee2a3bc6e36389fb20b99c. 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/QM4DW1535660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57fcc76b029d4ca2685d44d9ad318de9cd81a053c7abcbfbec4a11c2e4b77243. 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/QM4DW1535661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd0720d374cc45cdba56642795b6fb23b87e70e805b1bbd994a8613e74c1705. 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/QM4DW1535662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f4c792b18837f6e1d57ab427efc6a4da4b3c3c05396051d5a3cd9b2767a87e. 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/QM4DW1535663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195399a42b51fed5f9c0bb5974b427f85623df20bf1bf9d40b1d2245766b5e45. 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/QM4DW1535664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7754883fed242678ba0a7f5c93b4f5188ad490a3ed2964fbd9eacc6667d360. 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/QM4DW1535665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb67e83a615f2db7cbe0c97a9e07e71dba4ae7e391068bb5a029ca1df063fa3. 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/QM4DW1535666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866c3eb670f1b379649e1aa8598d039a1c2a70333c1eac1e9f6001c3b5b9a246. 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/QM4DW1535667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1258b3d38b7914c465b435f8c7e6091719c4f9e06b6d0a45880da2a6572f57c2. 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/QM4DW1535668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b31610accbe9cd22a71caf6edf9b70bd73e6fed46e2921119818b444ddb9d4. 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/QM4DW1535669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836b40ff7a6f0eff38c99eff8b916d3740e77a70478c908528603044f04883a8. 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/QM4DW1535670.
Why Don't U (feat. ABRA & ILOVEMAKONNEN)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c33eba1a95c70da3f435ec4c70e1fb386b5c1896d5275f238d4b3aa6b7f2d80. 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/USUYG1096054.
Why Don't U (feat. ABRA & ILOVEMAKONNEN) - Bobby Raps & KCSB Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e526891ed4b734a24052717f1e7c4ae5355167d119edccca8be965fab420dc. 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/USUYG1096065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e20f2d6db33579558bae8faaf46d30610b550b2f2ff8c4644de9319f7f88688. 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/GBLFP1591685.