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 0x2bbafb5773656471db810f1771dab4c4c3d6d4570eb0049f1d1bfb61a3ff4593. Chain 2 (Bitcoin): anchored in block 953724 (2026-06-15T01:43:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8c62a520-6869-49e9-a818-bfeaba153f21.json and https://artists.proofprofile.net/proofs/artist/8c62a520-6869-49e9-a818-bfeaba153f21.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 0x5f1f9565b61275d3d9456750c4fb5a86aeb0bb647cf724ca23eb32cb6e0ae777. 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/HKG732124789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9a69bbc1d07cfdef19cdc1e5bae1cd01eb057c36b77e642b1ed5fa1d76d8f7. 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/HKG732124793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08803dfd1b22e50724854a9261f8a4ae67a66f402f00e653ec3703a65402bbda. 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/HKG732124795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b978e9e6d6fcf515a93f4d1187ed3165df4c26011955eb3aedc4dab63a3289. 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/HKG732124797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e32f6f9662a55a77741c1c56402428e8cd9bc599ed385d5b9a6839ed4b8c43a. 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/HKG732124799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f528f55c010c96221849082ffb8033e687c97640c5ddec39ab229c52715f577. 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/HKG732124801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94009ab157f571f7e4bd0e7716875bbba3215ff2be88f9744014e2d8abc00c97. 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/HKG732124803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1aa8ce5a8c29c0f912616783fb730e1d0f3e92ffbfe578c090d1027588d072. 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/HKG731894208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63170b6e24c04867c12aafe29ecf9f4e495ee5e30158c28dc04d17b658e42e68. 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/HKG731764060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad61f4d38d413d98ff37f78dc8198fcd04344e86ffe11bd6d71a538238a61d09. 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/FR10S2468780.
We Are All Stars - Envision Challengers Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9f2308d6358d0909a5e91b09e82432d6d021685b3dc8f6e98cc7717f1d1e6a. 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/FR10S2468781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc143075dbc4755551c3ada819fcadc894ba21aae23ffdf4e6380b4412660b8. 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/FR10S2468782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128be67e346f62a6aabbb988550f57a2dc559663883612e624684ebc4eb1fb7b. 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/HKG732124765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee4e39dda79604b5e2e2c5a71ad3b5c41c37a46be216e7d6d43cadf22225b8c. 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/HKG732124769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c40c858a5139801c54a69050360af493b33d16b96bd7b8cd2279ca0a25be9f. 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/HKG732124771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99b3491b1b9b77728bdd886bb050fcf6d068273135d811c0cce6d3fdbab32f0. 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/HKG732124772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8762ec4bfa9a4a5afbfbe7536f7221ee6972909d5481f9b44f16f850478356. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HKG732124773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ff36496b8bfb2a2c4203b7daec20ac3202446d84eab633278b242b7ce33ea3. 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/HKG732124775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5a155dfd46a8ef0fcd6e066f51c2bdfc2895550e1d610118a7c10c89cacd75. 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/HKG732124779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675102b3800022beff41099fbe1ed493549e2abace161631d7b28622ae6b3ac0. 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/HKG732124781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e34fad97c941ce8181b61492fac80e9a8384ddacf3b1c2781701377738fc67a. 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/HKG732124767.
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 0x5e8383b248d925ec8144c084c1ecf119cc612441b77bd246970a83dd814095ec. 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/HKG732124721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c837cce65b8551d6169b563ff8a296201f9ff7990023ecb6932cc27807b6747. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HKG732124725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d68f77fd3686383e18c7e4ec7dd9718df1f91f33e9a2a846e0a17e965a2c2f. 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/HKG732124727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd339dae0381e0e7635dfe022f7c8ae78566da6a47e32fb0b3451357b8a7ee864. 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/HKG732124731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab6c3798ffac76342f91671f6c68e0714aab6bd5e6f36a4b56e5c8c2befff6a. 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/HKG732124739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce9bf0b776b4e60135a2bab82cea2b5aa7145224cba9ad3bf5a0d8e98fd03a8. 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/HKG732280377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036122fcb5f1b340b5575d1be114f146e3fe2ed669a89dfea123ec3704acdbe6. 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/HKG732280378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf058e299ba591bb352d954af13c4b0617f3f7de94ae78f1b33223a0be81abf. 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/HKG732280394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15076f6d2f5bc86619b7a5101f575577e57ee4348df891db1d8b9cd1e0de6bb. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/HKG732280396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59cd07c4335efa89c552f3a721b2477ab77705a5393200d4fc3f70cf6a161a02. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/HKG732124651.