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 0x6edfe072c10bb696c76b89b2a6a36d6d3ce031211695da93d7532096a3e5496d. 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/74f33e82-767e-40a4-abd0-022ff99343e7.json and https://artists.proofprofile.net/proofs/artist/74f33e82-767e-40a4-abd0-022ff99343e7.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 0x8796307503b32261ec290517f42f69406332de18f9912df3f7a0574a9855826d. 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/USV291345641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c82c164865e9b879061b9a044564492aaa5eb4709dbfd48ca67c257681c4dab. 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/USV291345642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316bf49fb9493f100d5dce6520c06763ea212487450f02eec10116e78e3a2016. 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/USV291345643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9feed552a284a39ecf97054c0c8014c7b4fb65077297d48c5327b410bebe3be3. 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/USV291345644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d4cdb13a407145d1c947f7541041c97bd2b860fcb57af61137334927f656ed. 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/USV291345646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a86e0e78a3b8b71921a0b19f658b27bb2f48c9239f624f38b841e9a7cd804e. 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/USV291345647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580bd7148acada850bc82bc751a9085b28bbeecc11117195bf4328e77d6efc56. 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/USV291345648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018672596f1eae09c64ad3bef0ca250085178b4c86242185ffdbd05acbc80349. 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/USV291345649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768e4ee81a186ce31de5b95a085da01e1cb9a1ce67019eb94888a0b2ecdbf6b9. 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/INT131515040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0e47c34260bf12d1ab16249dcc9bc053c8912b82f03eda625a62925be81d07. 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/INT131515024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e58a3e54e7f9a7042aca4afabb34fd03a6c7288a1762b741816b6ac027afb5. 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/INT131515025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808ac7d61f857cd4a42d9334b676bd10fa3a76ef374106392446e44360a9bba0. 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/INT131515044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70d52b49fca5e9ec1fb193d753cbe2e313c2072ad181203d9d1049d95f4ea08. 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/INT131515029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7263351e7882a8382fa1722f071ac370f2a896fd333a88fdf7bf9b7ebd71c0. 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/INT131515047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68caa6294163f73723aad12f5f3f2513d4bd4f2476e7b422361224dff9ace94a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/INT131515048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5851a2873a594f812cde8f6bd3eb3bc5037f58dd39684600e94947edc94e2a. 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/INT131515051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d098b2dc37e9f42f5b0046703e094163a7fba9ae7452121275a2cff37c1a134. 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/INT131515035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eab86a158db865301cc264e7dd101ffcb03817bc845dc2daeaaf263f975b3ac. 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/INT131515036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0878c26f704855208c4599e56b9369888c0b974e07650000e148d4d1f68c20f5. 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/INT131515055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a244e70defe1cac90d86cf530c6c85a3ee42fc32bc352c6e203d8acb90ba4c2. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/INT131515038.