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 0x20438638ff97858c63028b231a8071318eba4cdc9ff84593ab7309a1102425d6. 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/ef04b04e-da2a-4cdc-8471-2b97de3f343f.json and https://artists.proofprofile.net/proofs/artist/ef04b04e-da2a-4cdc-8471-2b97de3f343f.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 0x17f2f4a449caad5d76c0ef77ea3976a863d8309ec5160c2af80a38f56c6482a7. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/AEA0D2055021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3658fca193dd8d29695225b89396b3701a3a01125fa4996a6d8a09d72a67465f. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:38:54Z), 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/AEA0D2085019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f8b7339737ab33d8720d32c3c9c81dcef51d42c33103deff09ba46aa6effbd. 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/RUA1H2119329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90bb5d3b1361ebe358e067ed112070627fcaa075454ee692a2a5de8abf171ff0. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/AEA0Q2179284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3a620ea3a88252f6202e64cdcd6da111608cc2c2f09232ba68a51dcc85c718. 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/AEA2M2231484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b504fb1b0dd9457939b6bbbc4daaa6b35a57b98d8bfc2e11be369a926f4768. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:24:37Z), 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/AEA2M2231485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea99f7a1eecbbe10f2dace7967b8f3fa2e97468dd6ff5392730b5cb735ab6a41. 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/AEA2M2231486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b392877951362e4fea63e95140e006bb895621c6336f5693a47fbff48f68d0. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/AEA2M2231487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5417efe2c55ab19e1f33dfb648c03ae68729ffde7ff7bf1d9373eb32801939c8. 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/AEA2M2231488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4f51365f9b846bd3ced0c64eae9041b17abe3f48db37b5ecb9d63bf81051c3. 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/AEA2M2231490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db1173e308d2ee008bb53f3a25fb5e8b03ab4a57fd1faf5995e58db90220b4d. 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/RUAH62406873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682acaf4dd888a9f2d9584b1fecfa5c328d0fbda686cb7681699d0d5f66157bc. 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/RUAH62407829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb29afc556ead7afbd87f364c0773115789c2959b1a35ccbaa90c2acfbaf473d. 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/RUA1D2505261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef18e89068f22ba964d0c49e17ebb201142d2caa5576aa0a1d220612b7daef03. 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/RUA1D2511319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b9e31b0e29b218fb2641cb872bb27d90ac1c94a178b90f6e889ae6fbad3ed0. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/RUA1D2596805.