1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x010b67ca4ef5f5725817acd9c55cdb094f7143f1a4eb0312fc19305b7a12fbe9. 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/df5e32b0-06b6-4424-bbb7-564dcc563749.json and https://artists.proofprofile.net/proofs/artist/df5e32b0-06b6-4424-bbb7-564dcc563749.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 → block OTSBitcoinBlock must exist at that height 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 0xba8f64fe8a1fc475f41b475b8bca01bb71a2f940aff8e4ee91aa2b8c21d06de4. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/NLE870667101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4c820a1fb6158431aeeb241f4eeb70238c67c3d16852a1df8de3439eb36abd. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/NLE870921306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3735163175b07065068709fc04558319a51faec52ce442c1fcd16f05955f0b38. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/NLE871546101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc969ce94b13e8644abc36f895b4d4d891e48aa019342c9851cb6d47f557c7138. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/NLE871528302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5087f2f84a57526be3a8fb998786bc227a0cb0df1e714a7e318a92cca07f75. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:11:40Z), 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/NLE871317901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e700c67a204c7fec00dcacbc58d7deb8def37fc4fe57590fb5e99b863ba500. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/NLE871613301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9686f9cecf94cd4bef7d346839fc236aa6450805a899da345b39d9e54489c7da. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/NLE871713301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84dd2817862132b5ca0d6dff368f3e9d372f5f4b4d8e6931173266baf175c9b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NLE871920400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a195fe9acfefd45b5c31fe5d0b041ffd4dd65a182dd2c9ed0b88ec02c389d5. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/NLE872209501.
Zing-Vecht-Huil-Bid-Lach-Werk En Bewonder
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb944227c216ef4acb83e537ef2ace16fea98b9b6b2355fc82508c440b718e00c. 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/NLE871931400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057c435e1d422f2aa499412b7f53a6a00c034ff32a97ef84ba23f5689abb31f1. 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/NLE871120010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057c435e1d422f2aa499412b7f53a6a00c034ff32a97ef84ba23f5689abb31f1. 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/NLE871120010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a60274388468f05c6542cb3bdaa2f2b4de88bf10ca63dd4fdaf50a6d7b9947. 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/NLE871334509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057c435e1d422f2aa499412b7f53a6a00c034ff32a97ef84ba23f5689abb31f1. 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/NLE871120010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057c435e1d422f2aa499412b7f53a6a00c034ff32a97ef84ba23f5689abb31f1. 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/NLE871120010.