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 0xe80fc2e8f248b1c736d381456803a3e89ca3e2fa2b7a104052695bf526ebed12. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/baf2de1f-1df8-447b-a9e7-93c5e8604a5d.json and https://artists.proofprofile.net/proofs/artist/baf2de1f-1df8-447b-a9e7-93c5e8604a5d.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 0x537fee19abe829fd9364fc7e2d9545866d993d7c2b82907cb95ab04213d05b7b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZFYY2501052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25545accc839c7e1152f6420e003a3d11441cefa0154ffefcfb25f4e9c0e11ee. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:03:17Z), 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/QZFYZ2542751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b887a5ddaf54ffc3c555e29af60fde8792bf6ec6d358ce023f96ce5ca4e9c9. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:07:18Z), 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/QZDA62587985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2a71f7094eed8abba0b66569abef1dd141762de206fe761e18fad00478e974. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZDA62587987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x421108e0d2a8a358f7c1a4c1ef2b2e1331b3292e73980747d106829de8cb1ab4. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:45:22Z), 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/QZK6J2536739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea37435d1a9cb9c70d2993e76c15d7db40fe9f3baa69904cefb4a8805e2d601b. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:31:37Z), 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/QZK6J2536740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e89aff3ba50af1b521f61066ba56dc84b3eb8635fc3af7650040ec13893205. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:11:02Z), 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/QZK6J2536741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafafe57302c45aa9f1f8c7dff9d2a4d41e5d32687b3f9a0876538205fd728398. 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/QZK6J2536742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b2bb7fd9eeb2b6ba772b87e2b87fd51857644b3da829a74329fe79baa4c971. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZK6J2536743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd923738f1e08386aad04decebef7283814a734bc54d1abeaf6035f14665168f7. 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/QZK6J2591068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b1ae8d54865b47ffaf9352ad4ac394caf2a245c576e6e3333ada24fca690a2. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZMEM2502878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa461e4b10648a8b3212577d2231a942bdf4b9ef9a54d0be454b98757a81e370f. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/QZMEM2502879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69adfe444b1187832fabe0d9023150125e751fa7c13958f671bd530046f9057. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZMEM2502880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62c472b805e569da4e278ad1953368d36246e547961e993795583e44c762ed8. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZMEM2502881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb5b124b9b455e2bebba5955803df33752ac832a3d7f04c2a67e2bb8b05b1e5. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZMEM2502882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc099c38b1a630d2e40e0919fb3676c31a6d9ae33e97980f78cc9ab8fc1c25de8. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZMEM2502884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7cbe1d59cec9cb26dce867cd885c3c59e23cbd0d5ba444eff0e806711087e4. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZMEM2502885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881881fb48e9c2929fad50a6b9a4c125b2c5b392e1f064ff91b386cdc15ffc83. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/QZMEM2502886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa540d36fa96709c66612def6a20b652b16f535f756307f160bb85dc4bfc6cd8e. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZMEM2502887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f41f35d4c9536e9ca2e8a5e666473efdeb53d6d642c60019ddd1641cb37f0f. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZMEM2502888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf387ff812be22bf288c5ccc52b9b25629d065d14e8eef247a2c151ad0fffe000. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZMEM2502889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b091f5fea32ffaeca90b79743fd3584f299648b972faef2f9b4a65b174a20c. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T08:35:05Z), 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/QZZ7N2511354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3105fa8fa2f0b1ec462d599a1faf2511fec072e15928bce88ad174ae7d8f991c. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:49:43Z), 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/QZZ7N2511355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8bccd4fe703c21aa05531cd0566e8e960eace56c04576e0d42daecbbb791d55. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZZ7N2511356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96d29f15b8c98d4b32debb75a027fffb9e7a26495a3b5c9cab11fad36aed937. 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/QZZ7N2511357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992f80e31f89ba0f6332a6a619ad78bb8cb8a9643ab500d8b994a62b0e56affe. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:38:53Z), 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/QZZ7N2511359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc10d1f5feb112bd12d795c54463dafd6ef30f6b3c8d72473838b584aac759b9. 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/QT3F42527530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6459506b8f4e786c982c24d0b7ebfaae0be748347543d7ea3c6bac3763ec97b6. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QT3F42527531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463d607697ea9ea1b39b738ce7cba38c6332bd9c66f4b1fd5e9332f666c271ae. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QT3F42527532.