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 0x76af989230a620ac028d53cb8d843579c63bb5c62b9244b8b044603c2cedae87. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/294cfc17-58e7-435b-831e-3c30f458ced9.json and https://artists.proofprofile.net/proofs/artist/294cfc17-58e7-435b-831e-3c30f458ced9.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 0x55affe8bf4d9bad411445aa3420456d8c9ab11defb3cd59f4653a6a4ea753af2. 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/QZFZ72225295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae91990a097248537a8f5808f04c8baac0e19051303842a723499404cbbc5f7. 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/QM24S2107229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23da6fcfd08770800a4e167b1be4418ac1f4e418428ac5a4a2f69e96611b9021. 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/QM24S2107176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd08eca0d06187ee665e9a7a02cd4f34940c9d4bdf1515c5a699ed33d98da3b. 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/QM24S2102785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1876acc2f92bdb41142e6e883d5c21a28c729afac1bd598a02d0cdd76a722d07. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QMBZ92074377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ad475503daddddc9126d84b8d08755fc873469047ecf04febb11db493f2f9d. 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/TCAFK2139603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90dc342f9fa9dc3b312976158e4f5ee3cab96d252c1c04f23ab13c2e2d7db476. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/QM3DF2294284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d12ae4b0bb9abfeba3224ac0698ee8b75a69e44cf54ee4397b02c63bda2f495. 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/QZMEN2267027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a3ea9bb3b30014a1ce01de852c5077f839c15d78c048a01852fe439e5c06ca. 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/GBWUL2171735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eccbef2fa6611ea3a6ff69879e815329fe0a9908afcb89c44042e0c3f09d1c1. 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/QMFMF2104563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271a0c94af67be67495ce6b91ffec462de9acf5c1a95c3b5158cbcbf9d91012e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZFYY2193249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a810209a1d909e669d022c67be0cc32a195939e842ebdfd8cb7ec532949816. 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/QM24S2008299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd058bd1910178ad3e2d4db7e130cbd0267f20b5690b7b41aa561202ee627839. 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/QZES72054260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58ba2be8714efddc4c6b4d77141e1f2606a21f50edffdf52254949b0ea14040. 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/QZES72035865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4226e70e8d6d737c5c07c8f80508de0a632d193eefc6549587fa4b2ca7f1b4d. 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/QZDA82046372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd6efc1df2a87364ae2c93b11cb74e258712a020e79870cadc867232ea736b3. 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/QZFZ62052358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc0042e65af0c06eaf13581271001b17dd955f50c15920f2f48e1d181c379e6. 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/QZFZ62051793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600d984549f72fbfd735c08f43386f8ab6e6e9f8e5c7e07a4f8d008cc0b921e9. 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/QM24S1902822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23da6fcfd08770800a4e167b1be4418ac1f4e418428ac5a4a2f69e96611b9021. 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/QM24S2107176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd08eca0d06187ee665e9a7a02cd4f34940c9d4bdf1515c5a699ed33d98da3b. 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/QM24S2102785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a810209a1d909e669d022c67be0cc32a195939e842ebdfd8cb7ec532949816. 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/QM24S2008299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c351799a88c39af3471e58cac26952dc118f04fbd640d7700c7331d49a8d936. 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/QM42K2028497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600d984549f72fbfd735c08f43386f8ab6e6e9f8e5c7e07a4f8d008cc0b921e9. 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/QM24S1902822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90dc342f9fa9dc3b312976158e4f5ee3cab96d252c1c04f23ab13c2e2d7db476. 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/QM3DF2294284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1876acc2f92bdb41142e6e883d5c21a28c729afac1bd598a02d0cdd76a722d07. 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/QMBZ92074377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b5ec8f706551c8db89c04ab9920c68292c96da5413e3761c3c86d7a6300d6e. 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/QZFYX2097406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d061deecafd5417fc2d38330e108d0b8820e72079837df69552cb20ef31e1c. 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/QZFYX2097407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ad475503daddddc9126d84b8d08755fc873469047ecf04febb11db493f2f9d. 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/TCAFK2139603.