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 0xd3fc92c3f39c5a04373d4a6d16beff1593163856a135b35f642cab8f953b40ae. 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/60b07494-a52d-4cd9-99f1-1650f6ba141d.json and https://artists.proofprofile.net/proofs/artist/60b07494-a52d-4cd9-99f1-1650f6ba141d.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 0xf4724d11c232dbe554a6f1658589c709cd79c2d2c4ae6cce0e8754bae2a7b6b2. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/QM4TX2305652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3d1ef52644060e491d6779c37caeafeaed0dafe99451d6605541d7d68e7223. 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/QM4TX2305653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f109e133caa557a7b6dc0c53f8e1d045e998ce54f01d13b52e0ee74fae6daf. 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/QM4TX2305655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ab7f6259fef5f2ab029577b28f1f7ef32a19f2144762429e2d46688125971f. 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/QM4TX2305657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3c3f8bc542ef3455afd3df3977749d8a331979cb397036021b7928821a79ca. 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/QM4TX2305658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0a0fc5c82d900a5ba996e006f6a992169779f3de88c4933aaf8091cf351d41. 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/QM4TX2305659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4a6a63cc57b1763e942f76e82472043a2185678564574c3a426e76b1e93b97. 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/QM4TX2305660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55fb5d43f8ac492c87d0657cf8824a8077c3c9a6a2950caee125ce2bfa0f0c78. 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/QMDA62294634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c956bcd76b37e19aede2bd6bd4fcdfa374f725286dcbf5ea8524f543f3bf361. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/QMDA62294646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e353a6831346c7697b0485a4a3322317f2614300a02f78fe839760f6ca2471e. 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/QMDA62294685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b50a9c6fbc17ee9dbf01a29299122e20ccb98b859e238e3be82f68f347eac46. 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/QMDA62294642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600f473faa04292f5b815d7704798c3e62fb07b13b60e3b9ee61bc086dd1fdc0. 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/QMDA62294645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284c4e672af18d1779de75e113c36e4edb07507330fbace88d88c3b660c7d975. 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/QMDA62294644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb63ec783459aaadc2fd01cfcc4a41bf1d8efaab69970ee7d3b892a0cb43b80. 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/QMDA62294639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9b850c3c0b89865f0f03c5043d5a75488143242bc5d38b41bef331dc3ce655. 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/GBKPL2207607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6454b61f5def37e5bf60750130447d356c2040350502fe006ca4168d5391abdc. 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/QMDA62294633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c8060bc36b1e6c86a19c3b63424527abc195cdf9ea6372fa0554b901316abc. 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/USUM72115049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e2e702672b6a8d593fa14ad6a8e2ce5b47e58e19505a55d3817d93e4d66991. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USUM72115045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb929133d67f10c908af1196e336042ebbdc26ca33bc5ffe287f621b5ac9979fc. 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/USUM72102139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67241d8fb6a154395fb6dc4017df43be337ef1d3dea3ef59cf4a7098f3cffd2f. 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/USUM72115051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8a05a02b79d3ae175b2e943fb4439770dcdaeabd37efc995b1db6412b3d724. 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/USUM72115060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42ffa1b813c32cf895aeaaf45de3d195f2c15ccc27e6e2052f7185a732a9998. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USUM72115047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57eb29b4c7df338c7d9ed684dd9b13440431677ab5e9abd8cb42eb87ff023701. 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/USUM72115055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19380d351e871553e6d03061ef0cc6d7fa452cc350e56db2249396d2b2a27ac0. 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/USUM72107831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe803c20f591b7f14885f0c909f21e083b99db0b42bbc9e9e702d0aacc3e221a0. 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/USUM72104117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92951c967e5bd2bdf366f55d055941660afe53679c3a2bb9467cf0d30ce54dc3. 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/USUM72102140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5f49df74c047cd468acec7f5908e555fed668e305f429788cf684744c29c9e. 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/QZNMX2383423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d4f069776cf891c04a366582b71e6158ef0ff4a2b07aaea2394b6127add613. 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/QMBZ92375442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f0f64196c8c5e284541083cc926ec43eca857e24da498dcc8e5bf193c816c1. 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/QM4TX2395764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b50a9c6fbc17ee9dbf01a29299122e20ccb98b859e238e3be82f68f347eac46. 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/QMDA62294642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56eca2359fe9dd418b09841afacf484326e4754b5f72b51530099dab7a0e3779. 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/QZNMT2225483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe803c20f591b7f14885f0c909f21e083b99db0b42bbc9e9e702d0aacc3e221a0. 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/USUM72104117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92951c967e5bd2bdf366f55d055941660afe53679c3a2bb9467cf0d30ce54dc3. 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/USUM72102140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb929133d67f10c908af1196e336042ebbdc26ca33bc5ffe287f621b5ac9979fc. 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/USUM72102139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1661792b9c13112abe29219f3d320b11bb0d354fb676a5111320df6cf55d282f. 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/QZMEV2099521.