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 0x65141ec33fd31b2223051e0d4e5db60d2ffd6838b5133fb3d3aefcd3afd625bd. 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/e1658846-ccdd-4609-b695-283017796819.json and https://artists.proofprofile.net/proofs/artist/e1658846-ccdd-4609-b695-283017796819.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 0xc399fe2c39b5fb5adaab36a8b2ac124d2544481cbe271d37bbeefdc1dfe8f7d2. 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/TCADQ1807040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f3a16a2fdd3e6a1dd18c2da9b7c1e105c1f33e97ed8a6b98ea8d5d1e1eff68. 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/FR10S1844120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ff18a5df29e4911ad66e7fa03587c101a6319f0cef3f14351a3d9d9b11c124. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCADM1815006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944c40e9a0766a0740d9b2dbe990fb7f9080fc184deb253260dc8da07c227b18. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/TCADK1776912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5eed6ca20a9b7adc47e309cf4b96c7c85419a1d3946eb932424c418e54f755. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/TCADL1899579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d1da4792c3493fe80f11e6d680b3a835a950fd1da6911778566640e40ec8a7. 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/TCADO1884965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8cc44a8e545cd27bc44129872d8b0d412764f8bb89c1d886c351050adae520. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/HUA611901581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfbfa85e959b1c70b655765bfb2ac9d433136b84a52d3ad187fab47380aaff99. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/HUA611901582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca0010876f2b1fcb56511182f9dc9c08394d1a67aaddf5fd9b93ec9a059b03e. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/HUA611901583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e15f5fc398cd60f6ea311636c8d6e9dae73b2af287df8159a7faf55213eda5. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/HUA611901584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338782c1b239b3e5769f14fedb6c39250233f7a280165f9fce9bf8fd93b94961. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/HUA611901588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6667e560d87eca9f1d3a557ccc2c4fb60bc56748f18d77f30468d27188a76967. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/HUA612023163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1c531924600a30f57b5d007a065fb201579f2cecb625733925d1aa7ebfcf92. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/HUA612202272.