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 0x300bc3ff822521319a69409eb3264eca4814b7680bdfe9ea4084a9831986015a. 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/5cc04665-c87a-4095-bdc0-ed1d345b5c15.json and https://artists.proofprofile.net/proofs/artist/5cc04665-c87a-4095-bdc0-ed1d345b5c15.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 0x0a83d21ffff15b69e85fba02c7d673147cea626bba9bab18518e0d2fe568970f. 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/USJ3V2313766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59652a8d8be8bcdaa2e72eff37248aa56f53b3d0c46a0e52470129ffa8190a5. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:51:55Z), 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/USJ3V2136844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51aeebb6ada878bdaee665a03025fb047e51488c16e0cfb508ac4bf9d43e4b93. 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/USJ3V2145227.
And She Liked to Smoke (I Met Sarah in the Bathroom)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffde0f361b073c85fb8966d108639637e117bf945d7fbad3de96ec5842c2ffee. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USJ3V2155168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ffcd0e3b36005a62dcb19ca27fea8b12f975d1d04c4fe497a04dcedd69840f. 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/USJ3V2155170.
Only Love Can Hurt Like This - Sped Up Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552718032e1e6a59a35d69eda1401bb7f632d6480c4b31f560380c0272a4fa10. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USJ3V2155172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef95ce50410f39770fbb7e97b6c2000ca8cb18283df88f880b3c8453098bd0c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USJ3V2155173.
Se Me da Eu Vou Ter Que Comer (Shunsui Bankai)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d48a4e4233912ae7973f8f5d92e937aba9aa426b792d87e2f0426edf55f8cf5. 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/USJ3V2186362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb704c6b81ff146fe4ca614b41c92e8c48d77fafe96b2f892c30e6accc6a593e. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USJ3V2195921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58abe499c0aee2ee17c5b411f30315d35f9a3e6ea8a2aba0546becfce1950fc5. 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/USJ3V2310783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82010a7279b9da63e6342b848b61a7a2b9772a2c1888c45864a91ae6db2f028. 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/USJ3V2310885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca498685709c5888f40529949efa855036ba833d73ac01e92e2354abda94ce13. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USJ3V2313057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b937f61f74960d75fcd93801b36b9478b5e95a90ae898e6cd2993d7d3a8d832. 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/USJ3V2324266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d16cc54b63aa3ca8fbba523cf2b701e5254c756eea5fdf56171d6dc1b24aff. 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/USJ3V2324245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69029cc4e0f3560139ef083e1425a323f562a6c91724a92ede1f73b5cd8dccd6. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/USJ3V2339412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b6de776282c08f17a80468e065e30a2aa0ce17a007eaca548afcb90ef191e0. 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/USJ3V2339417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15285401961878c1795c9eab6c797d8dd3f705da6e0b60c45611a83f7a8b4e08. 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/USJ3V2339418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e473b0275f5a134d3874bb547c72a2d041651f5298dddb24e8a0cf22585cb37. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/USJ3V2339420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ecc17d923bdb55dfcd8925428ac6df61e76fb9d02fe1fab1c54b4e8092955fd. 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/USJ3V2339421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b347a752dade9b73ee1ef5e95f1df75f02b564e5a1232f6d5710966502f975c. 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/USJ3V2339425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91f9fc3f0543b16be1a49331ec3eca4efceab550dda47c703c657959ce8bcdf. 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/USJ3V2339426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e57c8cbcdf51160078095f60ae919482f86889ad07bf528b5a0407cfdcdf3c6. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/USJ3V2339427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8972d39f154699ae0d1f0610e84c0444a696a36581fad52c39c7a087d8b23a66. 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/USJ3V2352129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41cacc3c20f73c9f8b7d1e972df08fc5a1eafaadecfd3a4e0a63a066edda4d18. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:38:29Z), 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/USJ3V2391370.