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 0x8dfb734cab71588f1489c047852589b2f80a0cba81824dc0bc3207633351f261. 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/d8a3cc0c-3df7-4455-85cc-5220e203b5a0.json and https://artists.proofprofile.net/proofs/artist/d8a3cc0c-3df7-4455-85cc-5220e203b5a0.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 0x9a4e4371c47a6fa2ff77d256f154a8988f5675b1e9d23068942e4bbfc3e6c3fa. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCACO1639674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5db7275f3e402407f999aa438f685462186eb508de560f63481ef42cc33af21. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCACO1639671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b41bf5c35cc510d3e69107958c55429aa906f515e13f8f87d54caca8ac79d85. 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/TCACO1639675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17edf620010ad421dd90f595c383ce95f1d8060ff42f0743c3be250114863b6a. 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/TCACO1639673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6623ce021a97fc56d0f8ed43b855a7dd120876a4bbdb94f467e0858dc390a91. 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/TCADI1746064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417b48437dcb55485cc957b220978c8c589391e5b6bcbb546ad7ad7c776481dc. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:43:30Z), 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/TCADI1746073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dfd4bc445bc815b8473a1d4920d10cc49b97bfe5848b7d6862ef23f24d792a4. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:43:28Z), 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/USDXS2006965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca961b9f66165d088333d530d663d2e94943bb51ad1c4c8115d58c88288709f7. 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/USDXS2006966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93cbef8035b107962c8ff8eeda45ceb547067c42686f0709a1d2909cf5972373. 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/USDXS2006969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x663aaf44b5579814201881235ddc358a63ada73ce94fa2eda68cb64184d93e27. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/USDXS2006970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1190ecdb07836bf81315c91cf8fe64c340651eac38d10af2b22ffa50925f4af0. 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/USDXS2006973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609b2dd1304ec3cb62b103431fceafc797d7ab33a049e7557cbf511a02a0af64. 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/USDXS2006981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c17a4c17ed04943e82f931c036e5173abbab1b7e391d7b1c5c6b70bc9ce1c2. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:23:49Z), 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/USDXS2006987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c022efa91bb66ba2e4772756a8380d9b94c550597f1d3947fc73aca4a2a349. 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/USDXS2006986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dfd4bc445bc815b8473a1d4920d10cc49b97bfe5848b7d6862ef23f24d792a4. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/USDXS2006965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca961b9f66165d088333d530d663d2e94943bb51ad1c4c8115d58c88288709f7. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USDXS2006966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1190ecdb07836bf81315c91cf8fe64c340651eac38d10af2b22ffa50925f4af0. 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/USDXS2006973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf004578c8695969e5d8374d1de99bcd47b64d10e586b02139c6ecfcae33e654a. 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/USDXS2006974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609b2dd1304ec3cb62b103431fceafc797d7ab33a049e7557cbf511a02a0af64. 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/USDXS2006981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544349f5eb0b385a6824682f0616b09a1f7b7da233f082235229cc56882e3898. 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/USDXS2006985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c022efa91bb66ba2e4772756a8380d9b94c550597f1d3947fc73aca4a2a349. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USDXS2006986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325b1f650c4af862c33bea37d337aee7d682201bae757c39fced2031d678b983. 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/QZQMB2105654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4a6086bd0dce79367accf3d264be46358f292c138258c0adff299ea598d784. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:47:16Z), 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/QZQMB2105661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5058be9287304bc834c645d6816634e5c7dcef3276f9f06649b893e96dcae3. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T16:46:31Z), 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/QMDA62455267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195a3acecf35dcebfbf9270a63866a11976bafd1ac9daec5148bf651a81ad654. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QM6MZ2584157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc715d8ec27bb22b12dc07908c978a518c35a3b8799831ae3d36dc28615a79526. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QM7282563377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496243588c90f507fc008e83e156fb16d34b42562e555da233a3a9885e66f6b3. 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/QM7282563378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6523b3fbd2e5190af0710b817cf2139ff4d66ab4e4be15563d5950eb5af243a9. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:53:33Z), 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/QM7282563380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3095323a308b84491f85877a92abbe69a755ce85f73aaccfe69fdc470310812c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM7282563381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fc04980da0191e704046943678396a48170d1a72b4be71991ebb3d09d31987. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QM7282563382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9ebd151dd729dd71195d11af3b03733b12f6de8564912edb43d73cecb94fd5. 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/QM7282563383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x149a32f3cf638983aa4cf1a434ca58df254bf4677e5155ba3d952a1e938739bc. 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/QM7282563384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50e527302c865d9aa7a1e6c458fb58d6a698511a09baeb9fb444e0426bf8a95. 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/QZQMB2104103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0bd6e687b55ea47e5db0230ddd71170582e6c8bd519af89da1d86d55bc90661. 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/QZQMB2104116.