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 0x3f622e00914fa49b5fd89d13be02909e5b83cdbaa86157824d9f7d4c87301b92. Chain 2 (Bitcoin): anchored in block 953612 (2026-06-14T08:22:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/17260423-e51c-48f5-8294-9e879ddd0864.json and https://artists.proofprofile.net/proofs/artist/17260423-e51c-48f5-8294-9e879ddd0864.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 0xa64dd177ffa61b8261eb717451bb54596c8720bb62f1c5be67a471a83f62b13a. 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/DGA062303871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebabfcf951ddbab8c8af2a4542e91e620007cd91bbaac236e45434a0e21a9db0. 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/DGA062303872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1933627f5de1ce808fecc6c9b083e464f55b5799375a13627a025ba1564afa3. 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/DGA062303873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b93081dae961fe5b68588caba3f116bd8e15c68ad632947031e79a8b26d39d9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DGA062303874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad3865d5c0025b602312a8a27e8a0a3d33f04b2078d8d7c7972d7cf88a7a571. 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/DGA062303877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70c598ef1537587a4aedf713bc9eab4d5e2f7f2b76b8ba3375a0328dd266788. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:19:37Z), 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/DGA062303875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3a71da9c34e3567eef08fed29f29adf8c51444ef79a4f51245848e7c4a724b. 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/IT5FS2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd13729dbe4eb788b0c3bd51fad89c507766d47641e54ef40073069a2b7c06c. 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/IT5FS2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8ca573860cc8ce971f6f95501e63137a4266360219bbe2f586377f3cd32cad. 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/IT5FS2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a1d99320206b60d0c6ccf6b64e89c6208d6d7ba4284510694d4fb65be855da. 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/USDY42472700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0fad5510785c0b9d4008128fc64a420a083893e54daeb84d9962d5abddfbfd8. 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/ITMDU2400153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62bafdf2e3be1ac92e4bf3097a664e7728f35f2fbea08fc837ad32c1e5db4e08. 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/ITMDU2500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb14048e9e8feff2713795b45df054ae440b941d7fed75aaf0783b64e4207f0. 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/ITMDU2500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb93ce6bfde028e6d8ef61b2799ed99431db9e6c891b94dbe39e5beaa78280a6. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ITMDU2400154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218bd4e485f1213d21c30cc6ec9fc8e37100a8ee6120ccfaa6535ebddd17b729. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ITMDU2500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a763df95b689cb839b9d55658564181e706b75b0854ee6de9732707b1c56c04. 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/ITMDU2500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70bcd3192a7683be0391d0b356b2e9443eb4ab0d74f0cc95c8369dc5c8f196e. 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/ITMDU2500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7137f0a50a0ccda2323e7bf588f0d0c0b9b24cc42ad81a1b8a167e9f708e4716. 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/ITMDU2500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe311b1984df473683ad168930e9becca74968861c7573af5113ccdb2df0cfbd. 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/ITMDU2500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1cd1df6dd53e1953b731d05c4595f006460bc7a6c1da9f79f638ccf536d703f. 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/ITMDU2500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069080442dd6cac407c7ef168bb04edc0c7191e25d56c703dddc21e65397a77c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ITMDU2500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb93ce6bfde028e6d8ef61b2799ed99431db9e6c891b94dbe39e5beaa78280a6. 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/ITMDU2400154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0fad5510785c0b9d4008128fc64a420a083893e54daeb84d9962d5abddfbfd8. 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/ITMDU2400153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aed2e05b8f04b78a53770ed8223182b96d18fbd51e263364178d622ffb65d36. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USX9P2482791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf544409e293ab679b07b55e5db5bcab40f51f57be2205820e751399743428840. 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/USX9P2482792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf448f6a3a87e7e96f917ee34cdf86f1cb2779dcb8325696fbbaa0639b04ffce4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USX9P2482793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d68616de3ae2fbecb65627e6ddbb7b8c21c2e18ce65bbf0ba226675df8d447. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USX9P2482794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6683f500a2775be59f7a19e6c9904a62339f31c7c645fcbbe43d829f41b4361f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USX9P2482795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7905ff94403f8bb41cebafbb7bae483eb34e5501140cb5f02ac25eeee960b921. 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/USX9P2482796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ec6fddc7e313862617675f21374425a418834af5b6c0e94a59cbfece3520e0. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USX9P2482797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6435cd2d7e2349ddbc2f0de274a1ea386ed43e826ea7b3db09cb40e82fed6f. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZHN42517395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a0642ea3f5511af376dc16185ab13e69b1736d4adaa0b220970dc8a62bbd81. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZHN42517397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfffdd4da456b6962110bba6e91837932b3ccb6997f814af58a911201c7e5075. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZHN42517398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091659df92bb47384f0c71eb87e6be5ff4f563ad6a5847272b91630f8d34e70a. 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/QZWFP2329553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87368a596f64c69b5fae71cd77be5fe5d5745783a4520f6bf1bb1a186199721f. 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/QZFZ62315913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4bc80723de4045b0a0a2470781342e8f6319fd9a6978e8c639a8a73f202562b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZTB42237785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ebfb937f4a1afb685ca574f60a2a353d223d4d1a3ff1c13331710653a7b4800. 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/QZFZ62315915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28940dfedfe76107f9c4e01fae415da5f51c966e6d6c976005c859dfde09b47c. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/QZRP52290525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983d3f703eea3cc2720bf826bd2fbda10b662f228369a7ce3c2fb4444de0a387. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/QZNWY2118484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d742065ca2999e73a3f5760cdeeffeef081e71f1e1886922dfdd7a0151f8946. 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/QZNWY2118486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895bd730ba39ad411fd999c72e46afc4b7947bcb0aeac9804ba9aab7373755fa. 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/QZNWW2057684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59637193464c6fc371735fb8b99fda6b6d8e5e1898aed7efeae5eeb1df81f78. 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/QZNWW2057688.