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 0xe0de2d72845ed2797475cbb1d1efc6a53c4faa7b9297a3ae47b486ba623059f3. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/616d4637-964a-4340-9928-164b3e92c594.json and https://artists.proofprofile.net/proofs/artist/616d4637-964a-4340-9928-164b3e92c594.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 0x74a74c21e8ad78fa6a94d236a786cfafd7bf38b03b436f916c5f955d97a2b3df. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ITM461900050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e21b7ed97b512464e1d9494a7270d059a6ecd7b4e0f7346b0f3a56275c71457. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:26:16Z), 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/ITM461900043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2c6fd124c99ad3cf2b5e776406153b25b4c40e3ce1567894b8e7844f4b5aa2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ITM461900046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac1544e94df035265796e8f1b782af29f45021e1babaa743e91129785feec58. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/ITM461900044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9cef22e3f7760383d9fe6917f2b15d67b166b2a6edef437068a419b04e635b. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/ITM461900045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2c6fd124c99ad3cf2b5e776406153b25b4c40e3ce1567894b8e7844f4b5aa2. 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/ITM461900046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407cec6ef545639db9d82a505639c33dd388a9c23d68f006965d321d633e1063. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ITM461900047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6126f4b8d350972ca4ebd8533339b0e0eb42e8a7c1ac3ae40156d38d426888bd. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ITM461900048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2772ed3792fe58ea2a990f235cfd33649c7e11ac1e56e772cb7dc0a310be53f. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:09:31Z), 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/ITM461900049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a74c21e8ad78fa6a94d236a786cfafd7bf38b03b436f916c5f955d97a2b3df. 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/ITM461900050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781caf98f11a07442c453e3ed806f994261f8b54ff3bbfa3d5d68ec65ce58d08. 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/ITM461900051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500d15a51410e11905083760e7299062a51b6a6165f3006a2ec500ad046c1603. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ITM462000229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b0cccc987b6d9527ce302cfdedc9f4508750c8211cfbae0d13ee73a0851d89. 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/ITM462000230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945ccc0bd9203942cf3eef386c58ee5809b0e6641e5f525e11bbe0133631ecc4. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/ITM462000232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7870600d83a9736ff65d8721bf5a58e13ecf8175a21cdc1e6de949e1eff01c. 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/ITM462000233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe049d9d635506c58d3d98a63be2d07d7fe9b3ee2cba1d974cfeaf18a35d8611a. 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/ITM462000234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61a269fe2272d7ca3d34b7b964a26bcea3ffee04883e62f7bb2a0f2b22037eb. 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/ITM462000235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b85a8b7b961045eff4f8aa992453669c8507bcb0b2656309e383fdedbd6510c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ITM462000236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb388deafc5c03a72e1a8b3ac62472fd7b2f445ac4a59e22bc1582d3ba50fad. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:44:27Z), 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/ITM462000237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe604dcb124701403dd5ca9fac33b81acf49421648e9a33bfd9101aa24dc8292. 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/ITM462000238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a292b2596db854133148680e2f143865a1f849616bf09a8236782ac624cc551. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ITM462000239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b15fed56764e50eb95870d48ccbb119dc1ce89702f2c3d3fd364e0e4510906. 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/ITM462000240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129cd5af20be2a1680cecd063771ed76b5db10d4016a0376b8e64c7d82837593. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/ITM462000228.