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 0x70616baee0572a5517585918d2aacb6f8d66ff160a2870482953f14a49ae8494. 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/e33cfb6b-00ce-4e59-ac7c-b31972e4946a.json and https://artists.proofprofile.net/proofs/artist/e33cfb6b-00ce-4e59-ac7c-b31972e4946a.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 0x0e4513c09f6b2501319160297b7dd920ebb49e376d9c1053ce0e912b6ae0d367. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/TCABP1397759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e7aeaabcace5cfc0a4e13dbf50a6a1e114cf1f8a314fbd888cc241aad1de9e. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/TCABP1397762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a81e716592cfcfbcd685bfca08492adb134e6d232b1e48ee82bd800244254c. 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/TCABP1397767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce90f468f233dc1732c12499dfafaf7a7bce97d6e5b4e8696b6b4cc69fcdc259. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/TCABP1397769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f66ba7a5ffdb7779eea16489021d924f5083af650179cfd24a81d606cccc86. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/TCABP1397772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0165cbbcbd2172bb4cfb6ae00bf493321f41fdb54303c390f6d77290e80a29d. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:39:33Z), 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/TCABP1397774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa016869bfea106656a9eaccb16f3cd60551a94c4ba3799b84d07d780b512172b. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:47:45Z), 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/US3X51531001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b2cdfd12e29a94439bb4e13456607e6c3d91390088999fccc2e135c6d98268. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/US3X51531009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe761c603221761657467ee62a7c0ab95442da45e1a50cca18e40c7618c37a66d. Chain 2 (Bitcoin): anchored in block 957550 (2026-07-11T09:54:43Z), 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/US3X51839201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1d160a2ab73cb79ac2ed4a19bc1e03f23d39186f74e86b29309b35c9121b44. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/US3X51839202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22f9cdef43a299685036aca3f60de051b73900b132af1068f6d3e308ef49241. 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/US3X51839203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35c6bf11061feecc30cfa9c34d8d200d1968311a8034c5ba4487d9656f76c47. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/US3X51839205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec4ca0501672d6ea82ff1c93977af71f75296d4afa4b5253b0257840a3fd28d. 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/US3X51839206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162156874fb9566a703c10115fbf114651454c578e1fb75db4dbb28340b28594. 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/US3X51839207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9558b5c34fcfd92e0049ec7f69b5b845c726d6b976c26f51afd99bdf9bf0963d. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/US3X51839208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f6697cc181f24dcd924a6e557b07f737ec9ebba43a1ee9181c899ba773c733. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/US3X51839209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194c5f277c05244927de2ada942953c8556cfd5062b299009f7cbfe5b7741f8a. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:43:31Z), 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/US3X51839210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb20e7da5786f247360c68bd31aeccefa7d8bda005a35ef77eeb6821feeccb291. 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/US3X51839211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6132dc963914ec882f2217122336029a60b16d7972331cd8dcf11953d5796c. 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/USA2P2242644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71c379f5f5f10831ec5962239f035bc77e9985fe7242939ecc487782357e437. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:55:56Z), 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/USA2P2241084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ea7a10297bbfe59e136ef32765a8c1c04753235e7f03f492976c751970e41a. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/USA2P2242648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec40347a71ee083a419452cdf2258ceea6ceac8ee0b4cb629f280b65ce436f9. 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/USA2P2242647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9c09710848513671e8194f01573837caeddfb34fe7cddac12b285005ba8695. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USA2P2242649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f224803c255e51215912511ee9849bec677dc3208374e743231bcd788b6eee. 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/USA2P2242642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875c047b1c8a41ae74f3900c68197fe30ed07765abd10a28440c5de917cd51bc. 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/USA2P2242646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619dd698d29773d1b8aef4ebf3065252b0b3e5d2dfdedd8cb1d92e1b2b104e82. 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/USA2P2242643.