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 0xf09b2fe9662b36b05d49428ca7f78ae9bde0b168b03eef4b3971a6e38d7c3113. 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/1a32b35d-28b5-4b3f-97b3-ba815ebcc60c.json and https://artists.proofprofile.net/proofs/artist/1a32b35d-28b5-4b3f-97b3-ba815ebcc60c.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 0x482bb35ef31813f7ce9171d6b547759c62d8aa10b4d3b5429855c7bba848aafd. 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/DEXW62500104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfbbedcdc2a585ab3a0c2f6aed527e0aae99638774a20b8918a9a6466927856b. 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/DEXW62500044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6462155f7bfd91c4446539cf2edd1ce7d411739987ad57bf6ca305dbea59b91. 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/DEXW62500061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c656bffd1ab1c93eb4564e1628259e1485a9cede04a9b12c1d33adf6de40211. 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/DEXW62500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084c55482d4b0140d4ec2058589e3a2779e628b21af87479fda6faff83720543. 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/DEXW62400393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21576a337dbbcb8bcc882e0bc0ed03cfabbd12563fd3d2f9ed00fe34cd8a2f65. 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/DEXW62400325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0126e8943cd9e34f39c6dce11732345762538c208df7e6c63f7ea5f356c5706b. 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/DEXW62400303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c578cc1d731e2eeb34f9d8f36da9751f59ad48c89756a0a5dccb1d5562e9f4. 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/DEXW62400234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649d25ccd090958b94cfb2ca4b1f355fd947a7cee1b4560a6660cceebbd00e4f. 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/DEXW62400195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed3560874cc1405bd0c4c88642a9de28f2c9d1726c7f474e6a6a5dcc030f0ed. 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/DEXW62400151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8d9125035a7cf71ef7bb9ae874875c142b73c12c27d520072be4663c1a38bc. 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/DEXW62400129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4d6f3ae40edc7e4ff2450ff87143c1fc5fd6edce3bbf250907b311caa4c570. 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/DEXW62200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e69fa1c5ae351b3c18fec64b44a74e0142d8538cc0bc62ace333eef4f958de8. 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/DEXW62200088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffaabb3156496e441ac0c8a3ba4a883281af9eab237e8e2434e13c8bff5e586c. 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/DEXW62200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46bab7c0ff0c81025658896b6d1aee0b68bbe5334621c5eeb6e86a51489e52a8. 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/DEXW62000043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7c0e21c96d585b622cca30bb781333d99722a8c9a693da8194917e7bb5150f. 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/DEXW62000025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf858f9941e39829e6942239a54988ce331799a1ed8ff42054beafb192d35433. 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/DEXW62300208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb45868fcf76a8c8f2c717c242287c195381c78c3cd408b6c909f0192751ecf. 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/DEXW62000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbe94eb7816d9999e31d430592542aae6548e08b729810fca672dad6ff78d26. 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/DEXW62000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7be03132589116622ecd78ac051b85c942144405fbb601751ee788e63b229b. 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/DEXW62000022.