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 0xd7d2b29980456bb01d0a482a29c4801bd92025ed4e6ac3f386997a6cca374e99. 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/42adf214-7636-4eee-802f-0af913fbeb28.json and https://artists.proofprofile.net/proofs/artist/42adf214-7636-4eee-802f-0af913fbeb28.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 0x60073b481a9c89f0ea8c518ab51e9b2c8cd1b93f37dae76ca34093cd7b945740. 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/TCAIN2470349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65e837c28dde922dc3da5fdbde84b5052e0fbae6a650ef1e157ff4487ea8da2. 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/QZMEN2097843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8905788502ba32f8db016ed7450617d65402178b8665cee9e97e557684cb59. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZMEN2097846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7510369a9402b93270bcfda9b23b283033409873750de773e482013639db3dbc. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZMEN2097851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32cc7027f2c907047b9c41abcd6291ab62e9c36233e915e57e3eeccdeff5f3e5. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QZMEN2097848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1fb94a8afeb22a38cb734d14827c04b6ebca644c68f134815d65fe1f25e963. 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/QM42K1904234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11577623ee827c6f27f1ce03dbfc94b12ec3486b8e5afb57962e6947ccbb5b5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM42K1966111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c6bd98c5c0b9dd9ede3dcaae14753cea37d80cc11bb53141b4cb39fe93e171. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QM42K1904148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a38c1e09487304e2def98e1a9e3c6b799010d3d1758b9594a60304c5209f53. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM42K1973528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489598074829d28c7882d49a5e6d68e7b85972b750394b5052e1778d3c090189. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM42K1911607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d3336e0f0104c536b5598760991bab9ed64b1a8439d8378420e766a3801b57. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QM42K1939120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91c3a4c6a60ddbf2a4cde1ece725634605b629f0418af28f8f41f1921d60ec9. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/QM42K1901149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46f07c1574577c5ef26ce2d0c40f81010307c31e777f1b8adc1e5cb7056925e. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/QM42K1923154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69168cfa5222ba290fc7a0c47af3a4adbf2adc785ebcff3d7f61cc155782fd8e. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QM42K1937407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e243aa22aaf2b236d9e82398b137051c12489b94d871a7faa1f8d3a6fb20943. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZWFH2390959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc594c7f6e0f654eacfca190a4099c55f23aeda5a1d49d58753fd603e24844316. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZWFH2390961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1107425397df6d3feb97135ae0c85db0d8fd532cbb3342d268934c42676c3a10. 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/QZES92334807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b77c33742079064bcde156a20f99e29abb3384106a3b8feb3ce4bce0d48c350. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZFZ72330107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cdd14072fab255f9c5636283786c3ef740ada920b5a44597147bcdfe4593cfb. 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/QZES82207778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a65b78246b71337664e5a1f40eeaaac4966765dd553bed493e7592174a1d48. 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/QZES82207780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08448322e2daefe2f81e7c26d2f098ae792cb1a4ba1c8a68d3ae1d8791bbf6e0. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QZES82207779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5294f8f214d06b1be586b42843ca762aef2d56ffdc94e273b7b003b16c48f3c0. 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/QZNWT2113044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8fbcf04e431ff392d7609cd0b2268ac0d790173a25006924df2941c91dd539d. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZNWT2113045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873a7ed978252c0d607c07ab5f4f3615d5d4061738560ceeea845b4a92c9e2f2. 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/QZES62138189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0861b89c8359d5a13d7892480727400e263eed7e242957ea05e6827c479b311. 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/QZES62107132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb365992e5714fa3805548917dca10393b499bafffcebdd987f926a6dff65c978. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZES62102624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a8dbd919bcbf36679244e74f489bbe92ddc44b5a0a22b9fd989aff8be09fcbc. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZDA72104600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd69386080e7883752637f017192d83e1e9e78813a35cf3ee2872d2796ddcf5. 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/QZFYY2134918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469ac6f8e6769e6843b0a2f4e326dba73e2633fdc38af119b003f05c4165e882. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/CA5KR2025579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8012cdd15c629320d5e50c40099fdfa731bc3c0329eeb37866dc144af4a5d5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM42K2041059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1108ae8c5a596f25535e928790845a2b88074c12fdba1b9628834dad030e1d7. 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/QM42K1979622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30806f28072a79a4cb5ffc02373fbe553d265d762dbc6b33037d6d61c1d81fd7. 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/QM42K1983523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3753338eb5a41e4bb42e56fd37859b3b0306b03ef255431566f3f935accd14. 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/QM42K1983380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7e747272d481d9ba9c5408e593e8bced94ab9e4c94c05475fd080bad9b1884. 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/QM42K1908670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6bdf5d43839542c5103ab881a107246b9da2e641fd4208658fcebe2333a7fe. 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/QM42K1894967.