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 0x1c059898360487415a2d791d311602dd9059722e5e69e43c29741b2b766b45ef. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/de425c84-ebfa-4a81-b37a-55c083cfddc6.json and https://artists.proofprofile.net/proofs/artist/de425c84-ebfa-4a81-b37a-55c083cfddc6.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 0x35d6af4c994cb0da16670e689bf49d9b53c5b9e8e6f19cba188f1ac65cec7068. 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/GB8KE2317291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8486574616b464b995e73053a09028b0db4154d6efcbd55a0cbcc1da367227c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBKQU2379970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb37a85c1e46a13b86192cdedce7ac5d0c88048a9f990bf95e67516e17d128e2. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/GBLV62302594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888daf865cc2e4f8169462b2cccf4a573b365d629b69e46cab961b3d12202079. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/GBLV62315060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe105d947af90e58a861f3123b4a546b9c47d28fbc26bbe0943bf663c2698a7a6. 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/GBKQU2413338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b586b52ba3c7043c63e9d6c1d18d5c27e11796db1f1d6215da7b3f5f7e6a6e7. 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/GBKQU2421200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4af4055fc90ddd66f154f7b5a2c099a9c408023dfac359c22e92b81f5e7452. 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/GBKQU2422806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dadc65b5cb247d082dfd0d996bce85b6c4f5f209e43aca865f79fa8c3f1bca6. 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/GBKQU2379349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06284409b2c257631b98f7834f3487734d1b9d01e29a1817041ab6f7bf725a4. 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/GBKQU2379354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba2e06aa43f142352502c48361282764e6e76defa1984a908722c59c2bc0049. 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/GBKQU2381508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf7e8e49de33a657be4b05a260c311a0998c5776e91f4688a97217b21bbe15b. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/GBKQU2361449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1037091f7331419854ef17967ee658a72b2dfa42054381c9fc6fd5f93f2acfe2. 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/GBKQU2345587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8c250075a1ca842a1cf9c0f109429e1b083e81aff6ee77310d8fd41a9d2ce3. 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/GBKQU2335866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598862748c77da168e67f2c0d98985c2c472bdd54843d6eaa056333aaabef906. 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/GBLV62209981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d914ecf835fc88f8b23c2ae23cd3b27ffc5778b91f48a9c68c54999cf4b705f. 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/GBLV62314894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d1639897eb45c50ee62aefbaef9466daa3a32982fe95ce7c5719ea183620de. 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/GBLV62318452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eefcc11645f9d90822f9c01ccec120a7a2c2497a60e9c0e3391f9f0138b2d5f. 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/GBLV62309925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888daf865cc2e4f8169462b2cccf4a573b365d629b69e46cab961b3d12202079. 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/GBLV62315060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ee779128ae186a0556337884f0e001532316730e16f11867569289ecb75fcd. 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/GBLV62305056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46949741df00af515c9ad1df75c78511486e5b3bd96a26a7bce9a6bb61cb6184. 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/GBLV62302624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc276b6ebf1e9958d935d9854164e401971e45e7cd38e6ebffbdbe5e6e05a322d. 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/GBLV62302618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb37a85c1e46a13b86192cdedce7ac5d0c88048a9f990bf95e67516e17d128e2. 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/GBLV62302594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06284409b2c257631b98f7834f3487734d1b9d01e29a1817041ab6f7bf725a4. 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/GBKQU2379354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2d9f5aa488236c5f5fe36808f41771a425f5adff7fad10419abebc951c9615. 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/GBKQU2383455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8530e1a672bebd2716b1e3e894712f174dd6cc6525f89207481b88050fab5dd. 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/GBKQU2371198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c01551f92eaccc9a8ac2ed80f6bdb5ae995686ebb0f60918ce02c28c046fd2. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/GBKQU2276745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b8ff3afafa848fa92bc9347d6ed83ec560a3d0a29c100388f6fac953f23a81. 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/GBKQU2388378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1037091f7331419854ef17967ee658a72b2dfa42054381c9fc6fd5f93f2acfe2. 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/GBKQU2345587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8486574616b464b995e73053a09028b0db4154d6efcbd55a0cbcc1da367227c. 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/GBKQU2379970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb8729a4fd84ee5b87aed70d8e6a7e9fa80966cce92ff0f55243d9e41f7a4a3. 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/GBKQU2387929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73eb8c390011cc289c30ebc25756d0c4f9bb3b14cf3a07f7f0727666e116735. 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/GBKQU2380296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dadc65b5cb247d082dfd0d996bce85b6c4f5f209e43aca865f79fa8c3f1bca6. 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/GBKQU2379349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a664a027065587d053b75686868e4ec02ff0c822d2368fefadbc2dfdc34d55a. 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/GBKQU2411985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe105d947af90e58a861f3123b4a546b9c47d28fbc26bbe0943bf663c2698a7a6. 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/GBKQU2413338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754582459ff555ec36e93d71721556f7c3e228d06bad78388dd6f225e69efa04. 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/US83Z2338831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0573928e9a9b2b2c25b22679e5d84db0de30e4d5a03c0389fac43dbc169e63. 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/QZWV32387476.