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 0x00a21bb1175f6508432c05d270d8c2c8722a7961c1b41f9f8ff844217db3dc8c. 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/c7cd382c-a1aa-4537-b3c4-c732b205f17b.json and https://artists.proofprofile.net/proofs/artist/c7cd382c-a1aa-4537-b3c4-c732b205f17b.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 0xc83dee53dd591a6b37e7d1e3dac9c0ed6d71e167012dab6134d01b3e4dc7bd65. 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/TCJPU2216804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42055b8692b090d7f2d1d70c7630de897dd4c0ce3e5391aa6fcfec30592af828. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCJPS2222298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f06c0add779ec5d23c327fa8c9142184b0f942861a3d5eed793c9eee4c5dc2e. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/TCJPS2222330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f569932467525e2e1764f3b07929aa3b2c53c199c1a095fc2ba6cefa3487301. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/TCJPS2222331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e3e2ae5efa2b2e74b34865ea7fb05ac4c84cdaa46aa3c528baed823d0c4810. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:13:49Z), 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/TCJPS2222183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa407dbf8bad0071c7ba7b42aa7099796bc66e930784df3779b19fc017624e492. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCJPB2467276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24d105394ef19acdc87d3fcde31df76e6df12940dadc78bb5fb72bdd21dc442. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCJPC2462713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003253f4efe1cc96e51509269142bcb5f4a39179cf6a6bab52555e2458d67166. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCJPC2462809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2545ecbb3707424f640727c86c715b39ec952214a5a0ff63df2f5028ea92490. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/TCJPC2462885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21b5a6dff2627346ea5ef6b59dd94d10a0203c9a81695ba82e566ef81178d65. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCJPC2462982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8466d0b0cc10750eb5d7e550609995368bcc0f5a5dded96cb7dcabb9c9be86b0. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/TCJPC2463053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44f8d3ea6d28a16405d32601d334fb8d236b33f6142b86454e87dec7e43b03a. 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/TCJPC2463132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabffcb8ffdaf4bda202caf0b63489da242904c89b4e0bb4469af3e59e7f72877. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/TCJPC2463133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095b1215cb0752a0dfcb7b1353369f760d22b7eeeef5844d7d6b99a8cceed6db. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/TCJPC2463009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e0b50fd9ef75f6d39c0f37922ab3cfa192b7ca6d8bb2c04f70b163290b98f7. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QT66J2518156.