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 0xae3a66329d10f4707ef29f3b53aa600b98aff7112ffa930e8a7ce82d8a8c6621. 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/13cd0064-fe47-49aa-885d-d695fec4f22a.json and https://artists.proofprofile.net/proofs/artist/13cd0064-fe47-49aa-885d-d695fec4f22a.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 0x4406f39626b0262a5153612be6f7c5cdf45792d540481e053c310840c90ff1b7. 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/ZZOPM2230967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2a4c0cf4d0f7cbab0332c9795fe2d212f1139d3f93b9307262c7ebb32f0e98. 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/QZGLM2475157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ec70d6660008432da399813df1a3d8a83149c3deb9ad2ea8532b0fbf04b191. 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/BK4DA2303395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6116b92d0ea9c8ecc391789c16d7fb82b7b2768f5f71c4eae74b4beae5bab1. 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/BK4DA2303393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6116b92d0ea9c8ecc391789c16d7fb82b7b2768f5f71c4eae74b4beae5bab1. 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/BK4DA2303393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ec70d6660008432da399813df1a3d8a83149c3deb9ad2ea8532b0fbf04b191. 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/BK4DA2303395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada4e3fa914c2d3ac1af136c04305de5230dce9375a4845f6dbf1b683ff9a868. 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/BK4DA2206728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66923088c23bed4fd30f930ef0d3de7ae540eba30be2fc791137cc5a3579224f. 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/BK4DA2321637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4994f8be726468028e6d6274c8117d51889a753410e2b7b6094a0844943517b1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ZZOPM2231320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a84a737452f90d9d54e4ffa560e6de63bcd876a6197f2b942d04486624d50a4. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/ZZOPM2226332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb146693f6882871e5fd2f4562bc00ff60e56fec83ff7b55f3904749bad119f44. 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/ZZOPM2231321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573e3fa187964b42151f71664b0915b13182dd07a5dcccde0107351d547cc965. 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/ZZOPM2231322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5852979ed59f3c3ff10ec753b9c483dd9f72b818d096053985c5649d5032a3. 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/ZZOPM2231323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4406f39626b0262a5153612be6f7c5cdf45792d540481e053c310840c90ff1b7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ZZOPM2230967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab7d0d6df4f2d1a83511a7bd3c956135820b3a4c63e0c15df21abcda837adb0. 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/ZZOPM2230668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28264f75175532de4d0235660071603f6055b3ba2947718d225d096329bdf7d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BK4DA2502916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33443248f2b0c61656468b78bbb3b64d4bb7490356867004371aeee09b76591. 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/BK4DA2465351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f53065fff2e3f5cc439bbb1d32f10c9600a9cd8f5d1b667a9e88311924be602. 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/BK4DA2425998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf419fb5d02ab657cf4c8f13d83de72ab041ed140c2319c9bea0592e65581bfae. 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/BK4DA2410814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77dbcfdeb1d1c3fc4554fd257a5a38c2bdf2d2b352dc483a4f0a8f85c3a9b923. 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/BK4DA2410816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f12b03203d7c931b10aff547fe33a41688c7dfce1fd8cc250e114b3d049df8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BK4DA2308820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef8db361cc80a5db8ae2a6dee295a1d1a9f1ec8fa7f2fab343e65e3504b4506. 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/BK4DA2300402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfada9442db2bfbe444fdb4ebe101bd841868e7a224fde032f3bc388e65c7deb9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ZZOPM2239772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d249313be5ba95bc83cdd6b7e64ca804ef3f93e366b2c2d419ec20edc6cb32. 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/ZZOPM2237722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a84a737452f90d9d54e4ffa560e6de63bcd876a6197f2b942d04486624d50a4. 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/ZZOPM2226332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836b470ec5f81f323fd449d174ae23c1bb6815805286507cb05006e1d89310d7. 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/QZMZ92174779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe2397fa0248f7f4ebc35e451d9596eb1f4ba1f7d887c6dd3be0faa87dcebe4. 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/CA5KR2132961.