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 0xd716b5f28eb6e1df007fbadec25a023388ebc41d65008c69aba435a8d18b08f7. 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/d3bf509f-3847-4ce4-af78-3ad2294ae03b.json and https://artists.proofprofile.net/proofs/artist/d3bf509f-3847-4ce4-af78-3ad2294ae03b.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 0x749557fa2cfc1e7e2948793bdad3f0f535bc4b94c56318e29d84c6be43dca6d3. 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/USDDP0500028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133d03ed78d62f281271c7fcc65764b75ccb4b34e7f992c7d068a115b8d89081. Chain 2 (Bitcoin): anchored in block 957552 (2026-07-11T10:04:42Z), 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/USHM20311033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3295e964baa283f9a47cc72c17abf2386f57da67b02959a9bad6c3ebb39c1de. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/USHM20311036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6739282c7bb9eba4f2304d379913366e4ac9ca87339de65d747d9b41a1d15846. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/USHM20311038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9e28d3cf87df48727e7ef966cfbabd24fa823cd1c7b7d34d7f86044c841736. 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/USHM20311039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873aa742a071e6bf4d99827619ed1b307df8d427020019138f7b3dabeee84f03. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/USHM20311040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf73213fbaa2e3f81f3bfff56221a6c93aa6f8090dffc3deba71cdb7bcf01f11. 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/USHM20311041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f6e28a969b4281d07d80ca190b202dca53a816096c2e6b2b97389deeaa8952. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USHM20311042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a63f46be10516fde47e5ed77c77c708d48daa2c9f4135395ad01dad49dd90b. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/USHM20311043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf32101c1546f35aa17f27742a04e7cf18a26aefc97ab0907627857ba0715d04. 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/USHM20311044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5a30563aa9f422b8f85ee843e3d5d1467295d61cd7fcb7a78446fdf602bb33. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USHM80421708.
Like You Want to Believe (Antistatic Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70669d7f9cbbefdb12445eb9cd346f76f0bd73b283ffabfc67eae0e60df5a81. 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/USHM80421712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb115ba97196398c4923a2fa23816b76ae20b8aee3bf736e76672c267d05797. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/USHM80421714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5a30563aa9f422b8f85ee843e3d5d1467295d61cd7fcb7a78446fdf602bb33. 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/USHM80421708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8751f9f2a3991266a330da46179b95aa665bb41c537749483d03ada8b4851a51. 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/USDPP0600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c31abcab0974f697d409716710c411604938d79d42924bba8118b69e47cd10. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:27:43Z), 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/USDPP0900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b486cda7828bbc72f8972172fbfb6da5dde1c677624854687afb93aacc3c2b. 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/USDDP1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b81e3a0b0f99ce41efc6f0fc71af98f8706570045c535dc19e4b67f31c2733. 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/USDDP2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09d28a39b758a8ce9f792a79cfb58ca426eee7bdd8aa595ed00e4852e9135be. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:02:57Z), 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/USDDP2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125950fe8c3edb4b662bdc44e27479d47adbb2bb0ff63f06420984f1aee5d586. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USDDP2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fbb1980df426227eec4cd295f1cfce228e0752505fa7500cffde1ba1d97de5c. 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/USDDP2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb1a9bc193497973f7f5f254df0973021cbeb468387633e276542cd00c8a00c. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USDDP2500007.
The Lunatics Have Taken Over the Asylum (Signals MIX)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea4ec0d078adb03ad966a1579b1aafb8c41253592cac531611fd7aedfd5a9d0. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USDDP2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0869f7d43e5445344eae10d840de28e62331cd8f7bccac4bfad04fd8eed6ed. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USDDP2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb5f2a80bc0ea91034c7f655913707649a31446fbb39078520ebea85f56ea0a. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:17:48Z), 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/USDDP2500016.
Freaks Me Out - Collide vs. Blue Stahli Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123b2b84ae49c26c93babaec728f4b75d05c77fd08a7019debee8cc896d98e27. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USDDP2500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5551201bbf5215f232db5fae6775fa1fd64ca40199815587153c67577c4ab677. 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/USDDP2500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf947b4fa30539d78b2a526fb7d5e81f056ba03c1dc4a62d58f1e1e4721fb36. 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/USDDP2500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b45bbab407103da52732ee88a0c0f3f0dd7e6a2143fe5d993b527cdfeb4eae7. 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/USYLB0801120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a90b5ca476e439e9b35bd80629a1cfeff13afe960677ddc4b503035e947ee5. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USHM90547587.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch