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 0x1b7f00f5f84278a8baeca6023e0e06ebb9101245194cfd8f94c7de905ac60c51. 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/f222dbeb-61e1-4918-a835-28cd59d18901.json and https://artists.proofprofile.net/proofs/artist/f222dbeb-61e1-4918-a835-28cd59d18901.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 0x30bebd6dec3caec2acb21468aef74da4a853079043e4a22e79f487892187af2a. 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/FR9W12016721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29620a9fb89fbbebeb6d9ad3db71c97db17c30dc11f198c703d8cac3883edca3. 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/FR9W12016729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0bc96001e6e550e819e2a33d4d603a06a6bfb639615f8804d907e25fca12ace. 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/FR9W12016653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa384944252c43c42d61394afb7ca57a664a6a5dc2f515ba9f3e711c49526db95. 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/FR9W12108854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842e5aef727b28852ce8c21ad6ef4b9312eb0a80e92b851df4f77a1d5441a4d4. 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/FR9W12108856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2085c8f62232962fc00a5f1a0a1d2625b3350bb02111668dd63d2370a4d32220. 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/FR9W12016724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1619520d66a650e8868b06d85f82672d64d5bbb35dafc0fcd9ac80938ebcd4. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FR9W12016726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333b8ed73559584ff5f7614d93d4edf8fa8baa6badfbc900b81cb7da2aa1bc1f. 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/FR9W12016730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d7cf4e9ba5e4bd6f0ede0036546d1767ca2afc49403f3776ef1b435f1c988d. 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/FR9W12016733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec64c1877677dd9bdc21798880cec32e3e150947e2ac13140a9d57632cabc7d. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T17:55:28Z), 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/FR5R00909594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20b303e5c0e516c5d06a1393795749def34f83157533dc4c726e8754bfd3aa1. 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/FR5R00909595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15c66b8faeb9594e8a54258fa70721be428b37c5234d05c921d9d75f6c6cda9. 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/FR5R00909597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce92977b054ca812125e7de064bf0499056e82e80f66d45ef28a37e228a6c49d. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/FR5R00909598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9afa0ec51f721f5915e78310a1b96ed9136f980479c110a368afee6a652b3501. 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/FR5R00909599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07655b3a107bbe90f711238c636afa19a20138aaae56c9e682d169629694e62c. 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/FR5R00909600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627cee2c2759c4878307bd5a437f447c3ec05d2d6cb928ce8b29157bbe1119de. 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/FR5R00908180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe069b4d6da8633a561c2dd47d2e265c334187469a55c09b41e68da054e906fe7. 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/FR5R00908181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaab75b39a96d7a443a9d475a281e435908795ac4297e03bb6f5534194daaff3. Chain 2 (Bitcoin): anchored in block 957025 (2026-07-21T23:22:37Z), 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/FR5R00908186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef23dd55ff0211d02159de8a68f0783f700a1ca2698fb38421e025657883318. 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/FR5R00908187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594127f3dc2e430c917bba57fa67ca6de3a9a16644cf8d786c3e3db083e0d3b5. 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/FR5R00908188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734f78bc2946b8955daa596665e00af65d890e4557eee555b1e88ad662b60686. 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/FR5R00908189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4b4d5876ec49fa08f643ab5c0df1a1ece96c82a7d5700563e9819d61443739. 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/FR5R00908191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738fadef88b12f458498da62e0c82a03aae2a79fa1c6b8d95377bc32e803d0aa. 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/QZFZ42421123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaba49bdd46c4f987e79b501fcd0337b0712b6814c1a0c1e9a186fa0a8301acb. 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/QZFZ42420841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf544e64705f760fbbde4fbd249e410f9bcbcbaaeee15041ecd206390e393fcf4. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZES62408587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738fadef88b12f458498da62e0c82a03aae2a79fa1c6b8d95377bc32e803d0aa. 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/QZFZ42421123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaba49bdd46c4f987e79b501fcd0337b0712b6814c1a0c1e9a186fa0a8301acb. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:37:04Z), 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/QZFZ42420841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c743842553601122c0af65d704aaf47d405eb45e246b05960d6d5ed341cbdfa. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/FR9W12254550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64fd8146ee03b43cb99537e42096efcd55912a99797c22b689126f2bc73eb6f. 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/FRIDO2212047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a17c2080364f704f447c72ff6fbc3eabce7d8c9a9d7c8a97af6444d590aa74. 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/FRIDO2212048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5e7f0342d7c5e11472b3316eb5c64e5fe4d3e467cd2294930c6c2ed6bb7ba6. 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/FRIDO2212052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda8f618ee3df520f486a5a41d0a08541583aa3e1c76b5b63e8e18e3f58d9e42. 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/FRIDO2210715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15626e7779aae9c0556d562e12e38721ba9cfc288bec0d04d7f9d69c89418e06. 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/FRIDO2210579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0bc96001e6e550e819e2a33d4d603a06a6bfb639615f8804d907e25fca12ace. 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/FR9W12016653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29620a9fb89fbbebeb6d9ad3db71c97db17c30dc11f198c703d8cac3883edca3. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FR9W12016729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1303118c7ce3d900107f72c40713664f21ef1fda073bd902aea317c139e275. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FR5R00911540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfca37a5aab2fd0bf2fa039155235fc96b9c390d12c7d6b0a0d36fcbde82ff9. 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/FR5R00909457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c479826e075a49ab9e21f634b056cff9309142107f9cebafd11f40284dc46f. 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/FRIDO1811766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6efb4f0301192f38868330fc0f7a872211b0e694fb4b880aed8f1e547d37fca6. 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/FR5R00908558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7b3f20bc10a8f32baa6a483f185ebf7bf35198a57f8d0c1d60008bf647cc86. 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/TCADD1768474.