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 0x6e305836b295215dad375f2fd3df0a1101cf34e1f62c995831f1bf01e8b07658. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/47bbf5e6-689f-4e0d-b75f-c210f87bd047.json and https://artists.proofprofile.net/proofs/artist/47bbf5e6-689f-4e0d-b75f-c210f87bd047.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 0xf55d2dd7f769f4582ff08624b5666d7450b543e7250a3b049611e4895bf97774. 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/QT3FE2528663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e31812b4d51a7d179fc7fa8bf6b7205bd22e2ac6e701261bae68cbee589582d. 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/QT3FE2528664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d3d24a08cf9ad9fcd7d73628b7af86a894eb4ac1042505288a66692ec6a05a2. 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/QT3FE2528665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4346d620c4a444a23ba56acc4dc49d4964a9c035af71bf626cfe22c8a31a0248. 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/QT3FE2528666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc4834e88a327b62d602ae4332b425e6c0d656c52037db1b47c68b78ead7feb. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QT3FE2528667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd244c8584e02fcd1c5702c57f7c7e43a425d51e46f34195c341df421b12f30f2. 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/QT3FE2528668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280e85b230e50451f61c0985ddd464b0980f63699fa9cbc36c9604dbc08f9bfa. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QT3FE2528669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562c2313134ac43c1cf6acecfeefe503167749538493cf853214c6b0f4eca7f3. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QT3FE2528670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99409fc4f762f54b3432af1ac68680f207b42a54d981b40129916f32524abfbb. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QT3FE2528671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e79469539da193ab1043494aad9ed2f185acaa0d23c29b1061e33de72e39b5. 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/QT3FF2507439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44e824a986b6832431558df7cfbd3f221a362b1bf48f014d81ea7828a3d77e2. 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/QT3FF2513151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d847658f2e081f3652f3139064f46bd5219196e0201e42d1be052aef3a579ba. 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/QT3FF2515416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671b5c4cbd086c31a1b628eeb224fcd169a308c724e07bc57f2320a90f072f79. 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/QT3FF2515378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc491811dd1ff8ad622fd956b9c64dbfc85afb8aa77bc378b8b3f92f253b4c54e. 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/QT3FF2515379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c79e3da820c85d1d040aa70b187a0bc265443c85127a0a5f5b874b3bf27f309. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QT3FF2515397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bebe3fca7f5232550bf01e60408e1a28e86b488566682be6c47513ac0924ddd. 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/QT3FF2515377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade0e6320da97aee39492ebaaa3d0e4fcb5b1746fd16bf1ad4206e9fb98cd06f. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:44:25Z), 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/QT6E72547907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd5c1f48a2aa420144ded3c97d52226382cc0ab0c68395a17aac4468869ee93. 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/QT6E82520789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e5bb48dff61a9c08224051e0c6de43a04994707e046746ad195daf40eaaa10. 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/QT6E82542574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5deabbf85eb8abc1ef2818d48d6f0ef5e8494bbdbe50b330a26c4d22ab50ae. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/QT6E82595790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1058a2a2b446af897f7f9ea5f17b9674dcf89c0ccf51c6797ba19e6912f4c44. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QT6E82592273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b5c6ec90ee1573adf9d17e4f79b48f64bd1cff78d3b6509626ecc997b4f7ec. 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/QT6EB2518909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0af7b69f399ea47e1f5ed7b4f95ab13d92fe5424ef3e81488e9f42f35b9772. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QT6EB2518994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d48744a9ff0979f6cb26054a55f49bdd767edb0d85644fe812474ce0fbed7f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QT6EB2515274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e943adc79809d660f08827f74ee59b3f844ece97122ee75023d16cd45fab7e. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QT6EB2518977.