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 0xc8832c218da1f48c6d2802d8627b5835e3e2ea82c2a11fc85037cab2c379a17f. 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/60561a95-f263-488c-b944-ea2f20aeead7.json and https://artists.proofprofile.net/proofs/artist/60561a95-f263-488c-b944-ea2f20aeead7.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 0x244353e1b9c5c94d4f92a699bf52cdf6a3b97d2d5149c1c76ba1d942427e8f55. 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/US83Z2331899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002309dda120a62bc1939ac921cf79d14b742595684dd52a98b886b83d0e5772. 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/US83Z2334113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779716034b5155f1f48ccea35b91140909ea3d87d054d33fbcfee8f02f9796e5. 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/US83Z2308187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be033645473532893d2b661add037973d7bd21d25916f51619d3ea4aa243804. 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/US83Z2238666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c71629582b6402730b2a1160d5c0d05038d8738a9e873bd777fdea0fdacdf3b. 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/US83Z2237507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56a62c03e35095600801eb8e46c2e73a94dfbf2b9151489c7a9db4737437f0b. 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/DEH742229531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63278260d6395d791b27f661fa12f965c3afc514ed3a80b83e309d91221f4c89. 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/US83Z2237956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba70d09ff87f60dfe9ba2e99e729e7567e03f0256b9100265a1bfb365eb471e. 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/US83Z2218406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa275fa75b797e8b56a81a7ec9c59ee09c10a5227dde693ef5a0ad8b3c8d77542. 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/DEH742173916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf786bab4f12d560b901ca3ff1e863d1996d828c14cb028e25a6f9f114939084. 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/US83Z2120227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f28387dbc9b6ea1f34d097e8afee6514fb6d1d7e8f0c1923eaff3f2a5580ea5. 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/US83Z2109724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70642474b14887e1c3acd82adbfb180fff5c37bd11121cc0e9bede7c81a840a. 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/US83Z2111425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d3ccb7ef21848a335e628e95137732c3b534eab7f76ecf136d1ea0a57d5846. 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/US83Z2111426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83df8631df2f149be43e229b9f581a937b5051e181be2a760681772a7a0bdf58. 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/US83Z2111427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7555d9cb10331971d4eb04f61811106d87acd365800d116b242d8d888b637d. 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/GBLV62031448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddeefbe8db6cc975e5f25cec4f3aece68a04351f80e9500c6ff9026125c3ad11. 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/GBLV62031450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd258751a95417caaf31fc5c8f078645587c6099a35ab219406a2257aa111696c. 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/GBLV62031451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x766dc075eba6ba0aa9da4e960c02c735dfe857d173d2cc9b4ebb3b21d272378d. 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/US83Z2034899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9160fce6fd36d5d0644722302142a8a6225b58a1da178d46f320a6525f4c902. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/US83Z2019735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06b14ae8c75e1ecd32fbd15d53964f9513d986154031689023f63389b94fea8. 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/GBKQU2032625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de9fbfff435df5819b3a591d993d7a979e97b8f0f77850552e92ab5a059df4c. 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/GBKQU2032626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f254be72e4e73c34cbcb07f68b7e44b06d5d70c98b1bf13e4c328aa13fde2d7. 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/GBKQU2032629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66bb5901bae591afe5bbe86ccadc672d7ccb33a099e9091b3e7de28d4533efb4. 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/US83Z1936582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373a96c9f7ad5ae367b90bb58b781d6da814e91663dd282c7d9c13e2d2de21f6. 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/US83Z1928125.
Ataro Son (Gobi Desert Collective & Ampermut Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49b3fb9721b77cd9636b41266fd1b347c4ab8562439a9f784e0e044686477a7. 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/US83Z1911859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4042df9029d26574a5dfcae7fa30684f65c029215ed9ba455e6f8a2e24c94f7e. 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/US83Z1911860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc995c418861ff9d1b0bc6a7f2dbea995c55eac3ece589691f8f82c032f9caa52. 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/US83Z1911861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72f5d2e0624f42c5bad35bf19656d326288da12ff8d9a474c90486af99b9810. 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/US83Z1911862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b36dc76cf5621ff605f16a3a1f4d71debf462d6e6447950d5b96f3dcff66952. 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/US83Z2503103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031a8d589b6a102cdd409108fb402e7fe0bb3af55e871eb93bd3dd3d68220607. 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/US83Z2503104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dcb0223284cb9bd720f5218bf4e3a6b1d5ddce1577f3fe64bdfa615d0c1bf7a. 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/US83Z2503105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125d31430afbf17d80e429066a42998b7465b8f2daa8a63140201c4d88149da0. 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/US83Z2424389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6041c86328cee22d1aee0fe52ff3c1d304458d915e23916b682352e620d435d. 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/US83Z2412861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ce42f4423c30d33ddf57969cbca158858aa3f7f5d75c017ec0e894ba19cf43. 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/US83Z2468314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c9ac5b463c8549787a01f44ae0ed00e702de066c034f3eddc5083a03b669011. 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/US83Z2354000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0eb0c32e1afa500e0ec0cb180ab4f14b9e9524ea2adabc970085b2cf3d43f34. 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/US83Z2127702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a477ae47ac75d66db4c2a91a97fd8abc1815e4c61b19e42345a085e1ff1bed. 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/US83Z2121507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4d30ef8f93f4aa08477976fbc557c0d74d613a93b164586f696926da77714f. 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/US83Z2121508.