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 0x548e137c6547234f9dd0a191a8598ecb6e2c08b4a1e7beff1ff87a28df839038. 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/92bc3f3b-ae82-4dbc-bc1a-f4cea9984cd2.json and https://artists.proofprofile.net/proofs/artist/92bc3f3b-ae82-4dbc-bc1a-f4cea9984cd2.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 0x078fedd19d54b1d66b3c963085fb931f5a90f4a3ee0a983de2cd374309af0de9. 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/USWB12300896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb460ed20324060c47443aa290969954ebed203f7f0166d093e5632e5334fe9. 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/QZWDE2398529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07af273673762a2dcdf878a1e2bf41fa1b1dcbc3e7ccf65ebd9b7d8f33867d29. 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/QZZ8B2398674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe047cb2407b1b035f39bd74801569916a9c9da2d7587af8143a6114e92599876. 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/QZZ8A2371588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57047a162b9d2a457a62fbb817d67e66c870b796c867c693777c5c76416c43fd. 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/QZTRX2202961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849eeda3e2974aa57f1fb085cb255ecb15d1d4be99cc98444d95ba5d80e6f782. 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/QZWDE2259723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1fdbc9e11066d026a9ae63bd594525748f86886f8ba7b55b7fd063918a0e95. 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/UKW3K2100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a914ee96b4c1a59ed194ccb3dbeb598d647eaead1467b896842b5418fed8e1a. 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/UKW3K2100019.
16 Pads [update 26092017] v2 (FIX 4 MPC)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288eb45a7c497786415933af7f803bcc3e0d93c00dd881eccf55bd3ac01d4dcd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBWUL2062181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e270883cfff0f7e3bf5279f71f0a2266aaa1d8d27944585e6f22ed53b18c21. 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/QZ5FN1982250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b33e494641c84b0d02d24d8cb8c177e33144470dc59980adce98194dee4c49. 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/QZ5FN1982263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83062d5a953d56b8278fe47a5b02a43ce8d2defb91e92d4e3b9c4aa2f834c24e. 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/QZ5FN1982269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d2f2f758e1d29d8345260c247829f72bcd886436c2ac0343f17d5b93f8e65e. 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/QZ5FN1982273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ba3b0f866a8b9848799012998fe9213c902edfc5f601560b4d251d28226adb. 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/UK6821722878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed1e1b2fea2808a857a17d2e08fe1cd135da2392445c8672898ce51ba10173a. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T16:20:48Z), 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/UK6821722879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464f6c904e12636cfd714dde6d5878369cc3cb09b0cc122fe4f75f7e33e5cd67. 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/UK6821722880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd826d6a89a943febebb5802e56530cef88af5548fc579476da65812960e6deed. 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/UK6821722881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20061ea718b6a51e4bc7acf935e974b149d5d2ef520c9995e64e544e4ba48097. 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/UK6821722882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9724f6d2f14fa9d57b9f8bc41c646a8048b599359ccc5a08020984fd68d4b56e. 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/UK6821722883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe047cb2407b1b035f39bd74801569916a9c9da2d7587af8143a6114e92599876. 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/QZZ8A2371588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73859bd0a37086ad42c34da10651213db5508b79e09781a62c4113b3a8c0900c. 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/QZWDD2249614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5268d0cff099c1e09fb7ffab9e855b9c7ec80e3815564064047a989d440ee30. 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/QZTV32200316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f75ff5b8b59050f89bb7189cfc120e98c3340de7a2608ab9f5de466876a9425. 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/GBRKQ2275778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc901a76e78a7ba6a523e6577a7c26f623671fdb26bbb5a7018bf318ed19d42c. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QM24S2201046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97945142ca197494290c7386e651c34b0e6ec53dadea925023e933b0e94c07f7. 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/BCBL92200201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8a51361ee640b681365a3e11c24d3ac029fb627c9f3ff3dbcc01a5be16e6ec. 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/BCBL92200202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77656f07926083e4703f9b1c813bf6d7049ad10e966917b964d30d0be59c9ca9. 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/USZ4V2100243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31db3ee2ca5d93e684f3ea28c30bb6dbe32a7f7d1b3763e521f63ae6720149d2. 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/USZ4V2100203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c82f4eb4d418839b7bbb30bed82de8f24195efda922fa4dcc4b98c0549a615. 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/AUFF02100216.
I Want You (I Need You) (Darius Syrossian Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6028eff6d2ca99f6de56971afcdfed929bb972aae8e3825100f1aae9353f68. 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/GBJAJ2101057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946f1b55c2517bf0851879a96d5e265a36c986f62b9d201c34937bab4b626b8f. 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/GBJAJ2101058.
Everything Else Is Secondary (Baltra Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045e65333c2e24e683acd015a7b0511e305f8b636e2ab83a9885536c1dd94915. 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/QZ5FN2088098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20787c4b41584ee2c8db4bf15c447678cd3249c4be93f957c24c8eea3cb99f2. 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/AUFF02400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291eb775c82279f145a6d677124280bfa1aa095db61c3042634e4ded5bae6f3c. 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/AUFF02400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75495e4a5c2d640ef0ffa066004df39fa94d76594583136bc464bfa8caa9def. 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/AUFF02400024.