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 0x3696b6b1f4f68581292df6e4ec027fa72c74d13131a2fa007f21d3cc0d9c66b1. 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/c9db1bf5-a14d-447d-8d29-f4e323fbe401.json and https://artists.proofprofile.net/proofs/artist/c9db1bf5-a14d-447d-8d29-f4e323fbe401.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 0xf7ea5a530357086167d22e4859311bcbdbba3071df99dad5b03c9a8b70dc2131. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QZHZ32111159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb156d8f56230876cebeecd91e3e5cc777595eb26af8c624f77f4b7842a8fa2. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/QZ86J1700074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad259d7bbf1faa7b7b5729bcdfb62a7b0bc46f8a02f0f0ae9e7dbc519029feb. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/QZ86J1700086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c215c97c4059ce425e88e758b266702af16eb7ab859967cdebd463fa462a0d. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/QZHZ32111139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ccd722e607db68e4ad5ae1a996e1eb02e7960a8e2e70268dcbe788999387bca. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHNB2041745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe6d2a2cc8c77acdac87e6cc0df6152048946d5b322ddc99a8f419afd59b2e4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZMEP2038254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04897994dcfc7e85133ef2235dca8b8e2b234dfb3956d812e87e803596cdf71b. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZFYW2137315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139dd141de6f69bdbea7ddc954a19ec750e26ef7de9768cf091c9e1b9fc086b8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DGA072293171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03887f73d44c7eb33a374484ef9b2634e51956a13fd073cfbeb93a8daaa6bfae. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/ES71G2311888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d550d69ec4c9d0e6a73289d045db53e7feb1735f93586d64b5b577c92e9953a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ES71G2311890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b372693c8faac335e3753b5cb22edf13238b8561d8addc09edc7eb07854d582. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZMER2351487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8ab64a060f174e67588d883c32eef1d2333cbc07616a60fa7a4921c1100de9. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/QZNWS2354831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb928d487a2aeaba322cdcdf38f9d7351cc2cbf3c6b20ebf0a01eed89999b4780. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ES71G2322186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192c9192074694bd28b61d8796151ff8f9f46346603a2884f16618678aab3bb6. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/ES71G2416289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38dda787c1f787de8a0bbfb33767183889db15680b7845db114b9c5e68753aaf. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTBF2465606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2f35cf6255342ba55ab475b609e1dd64c46acbe94d6b7585f0f5f83c3cbd57. 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/FR59R2158939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11274735eb95bdf0f230c4a366f915230d859721cc623ffd5d96ea1afc75938. 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/DEX262000435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1fe64de1a9298f3986a1aa6ad45a749339421774a844c61c129c9a30217eb6. 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/DEX262000438.
Vous êtes parfait.e.s - DJ Danifox Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda4ad94c08d80fc72d60cadb074bcfe6b94f893f1b07c1055be0c8ce10e415e. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/FRT092300098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd97e63dc84c22cede17f589f7cd462da8d66ef0931f6f99c961896176e347a. 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/ES71G2334646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc269fba82585847c3b0a101b9ea3198ff7d6d3432456c4ff2266a7b942d5443d. 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/ES71G2334645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931eb57fa9f9328ebf48d8afb3623c7e9b511b75120ab57787c2b4d4ed12530e. 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/ES71G2334647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9bf96e914b7a9e506378fc26d4536525fb497146dc268b0d3b37c24c0bfc3a. 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/ES71G2332811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672f511f417241f977c575627df0888226764da00c7f56a20fe52b1641ed57aa. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/ES71G2332813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85398c249e224acc063eae45f6d7def78a2e139f4d4f554b4d3569eca3dbc92f. 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/ES71G2332812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9fc8e74ec651044e5aa9c85f89a2f1eabfd1f315ea14044d18a204e24a49f9d. 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/DEX262000828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57c95554f02b8611fb8c6bf863e6f915ff05d058b1097ed0ed0d02db7bfc2dd. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/FRIDO2211032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1415773861ebf2fe9f2d52d85b388a7ed241d624b8af4b1e2545036bb2111da2. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/GB8X82401166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0c86faea34cb44be5ea288637f4a5b06e51a3835f258f4563cf7593f84a7f6. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/GB8X82401154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4030c9ecc00d598dd6c90f4ca36ad67416740d0ae517959886336d62987442b3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GB8X82401127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc1e7cb2d3087b53c361677e3d0e93b5362f9776b19e668ccf31ebbafeff679. 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/BRMPC2200036.