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 0xd12269b1a466bb0d69d789ff8ae87d5eefcf1f5f776304c2a9555ec14ebc0c68. 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/93cd3897-b709-4b7b-b83c-e81b0eee6f6f.json and https://artists.proofprofile.net/proofs/artist/93cd3897-b709-4b7b-b83c-e81b0eee6f6f.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 0x3a7bee707a4aad332538f093153dfde918f84b94f76b0e1657a9eab8642477d3. 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/FRX452486749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b18c89c112806c5bb91e4797b9cad6c5f49eed65d73387c37bd6d58cf154c3d. 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/FRX452486750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b02f1ef34173a32561b2b17c00fff2073b39fbd184e15a3ad4775aa2579dcf. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:50:41Z), 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/FRX452486752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4f87226903f4804d96b3b1dae98da05ff5ed7ee4cf4b92619b95e13871cb5c. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/FRX452486754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ed18717ffff17c6eab9d8e1e05896176108ab702eed462a8cc3a4b0914e806. 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/FRX452486762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601c63770a237ae6ee5f941fd1a4a08599d44d49233bbc739c2bcb92da2d1664. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/FRX452486792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c4a4ccffcfccda597e8e915bda42a9261b4db263578c67532ff8aa98ef1b7d. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/DGA082458827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30cab221635bfc5a64c3a9f44d32f32184bf42c3d8f64ccbb320e4c70a76893. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/DGA082458830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e372739ae478cea1dc22e531d4444518065cf5b9faa14b1aab2612160a4c99. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DGA082458832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2cf135e9d364a3747aaf99e56f7912d03eeb8af8a41a1b9f943f1241a67a54. 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/DGA092470859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd636de617d2e2958dd917649afd131f3a7bb5e47ac7841fd49ccf049ebf563f7. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:21:45Z), 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/DGA0M2479423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8acad5100c384b5cfd5fc8574b0d134fda4cb27e8e779db792b4559e598f0409. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/DGA0H2433467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb5ec770312ce228192ef25cf1734f9f3ee216561e065de4e5214f71b7d0e4a. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:52:29Z), 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/DGA0H2431659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1baf11c664f8d83787d21948e2e3d655f8a052f7e18f87ed53587ffd11cfda90. 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/DGA0H2431194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5f5b02fca1f40c0f69ef34feb0888a86803ef848bc8ce37e7d8918904092ef. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/DGA0T2401073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23041b3af94863870c3f6a208c72b9efb6cff145dc1c1477dfc1b8d0226c4ee1. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:08:04Z), 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/DGA0T2405003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f8a906ce1463ec57c272e1aaaa211dc4160608bec7e480d9fab51905bf459e. 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/DGA0T2405004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf522ac2a34a0197a564e594dd76cc13f15cfbbfa6ceaa3735e9d4bb7a275388d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR96X2591736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1ea72efd69d729ed9ae412e504d74f3b516a2243d8a3ea31d42e205f129f4d. 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/FR96X2597267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba771d05c192860b0a7b7e8c3db660cb38aa3a7822ba50396d5a698bebf77e8b. 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/FRX452550455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd8b9bdb34f9bf13981f463acd4a0240be245848100c6d1c3a634528abb1438. 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/FRX452567023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6506bb9766fcaabf7ee1036df568994fd93658365f737cefedb43f83cccc0f3. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/FRX762508216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde6bc73bb08b23a93c6c44c1dc58993afc1e9d63645511a5b7064e99092447e. 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/FRX762568669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53aab69e9e69c7741f7f1405bd378a779a6484957aa58a34342a5dfef7a884dc. 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/DGA062502274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2722271021ea270cbf206338bcba0ba05516bea26c0e2edf6e4c81b8752a84ea. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/DGA062521186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046b54a294f1da4ca195c8378d94419489e0248eba573a7ff147a09bfb00cc2a. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/DGA062564902.