1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x30d2074b11162a7c4e89df57dbed523ed2585e630f50e1682316e166672582e9. 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/5a7afa58-ed2c-4ab4-992c-fd0ac76fdef0.json and https://artists.proofprofile.net/proofs/artist/5a7afa58-ed2c-4ab4-992c-fd0ac76fdef0.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 → block OTSBitcoinBlock must exist at that height 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 0xef9e51aa11e83633b57663d832921c1f289d54489bf29259726b068733e7fb7f. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/TCADD1773495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995e9b3d4a36933b7319cdc98ece8ee83d7475b5a2070337790f41504909d322. 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/QZFYY1927980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cbf48b444f8a58ae8fe59c6bf44ad1793e1dc98d8449f1e9add10e7527b7d9b. 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/QZFZ61960341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6585d2c36cf39d3703d441fc901bb5a264c21b2b578dea0c119652dfbe90f7. 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/QZFZ61960548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf320b763a8cb05a551ce6a0a104e22ed4a09f71ec217854452eb266ed1ae72ee. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:48:38Z), 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/QZHN81952010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da5bd4b7fd5eb8e6258455d53197f39bdc93711f641b57e677f8b05f4bb3a20. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QZK6N1944490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb514de4c0c4016f53314dc7a2c1ff7234906106f2ba42f4e6d6b57e0f3bb5210. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/QZNWZ2061321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b9ad7f7923ecd3739c4be99b300d5fec0f9621b25086adf0ad756aa40676e6. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/TRAHZ2500201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e6e2e80818d323a4be519cb36197bb7277cac03aa45b5fbd28b932a16d9799. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:10:36Z), 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/TRAHZ2500202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905127f9513afe4ab9cb4444959b0fb5fd54748adc771c3f0dd0cf5f92194bff. 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/FR2X42241167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3abe1080045393064bffe464a46ca21a7d55673da8412fa8eb75ac4e41a940e7. 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/FR2X42241169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9184ec21e0d4ea0b20e92735b6ba03823378fd65d50981010f3f881c32bd54. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TRA162200595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6ea0eb40c9620a07455c30756050a6987b9a4b302eb98983b8f54fe208f597. 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/TRCAU2100061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c1634d3839a2d110db253841c9d8cd5ddff0ab65efd2a676b524e8bfa00569. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:44:50Z), 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/TRCHY2300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c1634d3839a2d110db253841c9d8cd5ddff0ab65efd2a676b524e8bfa00569. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TRCHY2300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ad36820a03cffcd9193e8e2d7b5e04858ea9dec8a2a3cddd2e5320c28f1587. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/TRA162300446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f13ace5206b111ee2f5c05daed252768d32aee405a084f537e2fd9434cd94b. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:25:17Z), 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/TRA162300558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fea528d16945eef2126c439fe14a2f964d6adf2d9ec3196c034c41ec47f8e5d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEZC62297774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9e68303306ce575ed297053aef3601172d9032711c1ff7880736cf094e17f9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRX762006309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57380f9ce92a6958bf88ed39b6abfa636eff3de164ca35d8df90157a9da2019. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM4TW2168532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0babaa9492b1081db4c48f4bf9c156bc558ba5fe7bd05f82400403ccaa8d46b0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TRA162400664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c54a39a9194da275205e2c1b6d08e8fa2150faef9065a154a719e11c79bdd6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TRAHZ2000025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7ef0578494c979a3a62e899bb6e2b2ded2f3a2a399479318550ca654290e78. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TRBIK2100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13506913421a68fb1b2912d97404719006ae2d67f5b21c85c65cb18c875ce2ca. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US7VG2519574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0c6fbf15394fab5b64088f18850242f27e73ad0a4a4772f9a7fc39c0a0fe85. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZGLS2545843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556f9a5235902a1b33854043679d21431f7059930c3d9268dfd726780383ef43. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TR0062300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318a349c355b8c4120d69f09eba5d4903973d597aac9eac8231053afba96b736. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/EEHU32000873.