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 0x2726c1bc831b3e656dd7e2bfbda0aabc3d1c369c890ed841777ff7ac439219ba. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/094fcf90-89a6-4d3d-97a4-b3f04bc39514.json and https://artists.proofprofile.net/proofs/artist/094fcf90-89a6-4d3d-97a4-b3f04bc39514.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 0x43f428e2d49d56d21810fcffe0391e5203992c56d51157f459b42958a6aa8802. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USL4Q1936295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d77b0f20d380f7010579fd1b223e973d525009b4a6e3d1aa8881399b3991ea7. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/BXOY51900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9463abc0189956818bb336b07b2698683fd05cd81f245c98fc30b10f8f397d1. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/BXOY52000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa838bbf26b8324d6a9e65bb6541f29cdb237c0a2dc644aa581d7eeb5a2e6b1. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/BXOY52100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0278f69125c20d8e6f546849d09fddd7fa44ad9708de2bd18037a4995321f34f. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/BXOY52100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1ece0e75103bb03c29c17e98ab3bd37d0f95cb85c44df3beb08edafed5db6c. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/BXOY52100037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4cc0efb4711219356c08af8428180a655436f613834649e31da49df6c0ddaa3. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/BXOY52100067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc01ded313eaf11a7064fa2334e9cdcc2db2e1be159d78ccfb607ad45de3f0c. 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/BXOY52100073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30116e311f15bf003da3e50af67bf1082df32c095b9773232cf57aa5da44a84f. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/BXOY52200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa53a20fc560b566d4177fc74e2884717c966abc307cc5409577037450dfc38. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/BXOY52200040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddefc3cffd9966f0d7c0505acfb0c5bb9eff59fd4aaf969e16c78158a92dff60. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/BXOY52300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cff2c567be8da5eb2528ca6f8c5bda9a27fe5076517f811e4dcdaa608f8b0f6. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/BXOY52300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a9ea79a05408de9d1875df3552083a8df6dfea00356b8f8bec21d5cc110d4d. 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/BXQHQ2200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5473f85dad0660bfca4597d10f605d5a55c5f102fda15a3e8d4b70c5acfc9c. 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/QZGLS2170244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7445e5fffaa1a16aa398361ecc81aa5941c426867c70f8f00f5dac1299337cf8. 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/BC0562100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29854301aad28caefedc11fc5ad39f27e95ff292094002cca76327a7114ad88. 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/BXOY51900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c80c9491356ab5b4778c5f4f1dbbdd8a1364a5b913abb91ecf974e9454b6a35. 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/QZNJV2032882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4072f8be5ee603c4ed9146de74aff77773e92b7eb636c653d3e57c6867066215. 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/BX08N2000137.