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 0x94acb1d5dff14accbda1bf050d26166539bf64b7f0f2e8bc0d278945a6a1b74d. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d02c9fda-f96c-4612-a45c-fdb63f813243.json and https://artists.proofprofile.net/proofs/artist/d02c9fda-f96c-4612-a45c-fdb63f813243.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 0x4ac929f6c5a6f9b56c8cdabf0e58919eab25fa3b7427c146622d7a23c1c7d26b. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GBMA22387342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d41498941887feeba7bf6d5e7e6fe4ad6f215a20ed5fe230922a25466bca8b. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/GBMA22387343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea27f5baa98d27bb55fcb58e7dfb8ac0647353573fe1197c58b09fa9ba9024b5. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/GBMA22387344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6396b4e665f63e78e7bba2101d47b9cc3da7ab0de9e9d5a0cbc7860c51adc7. 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/GBMA22387345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1468c97cffb2e533a1e7d05086543d3d5165fdfcb0f263b68dadb871649e20. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:52:22Z), 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/GBMA22387346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeaaa8b972a61a509f3e593c9d210103543c52dc91a0aacf8031277b35dd7991. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/GBMA22387347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc62b0220aafaf77c9755fa837d78926802b2157f76df4d511ee774e6b22a0d8. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:46:26Z), 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/GBMA22387348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9171c5c956e1192fffcf0a3ed6fe3bc7396035d0b49099a49c0bba10b705e982. 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/GBMA22387349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5674106da2e4e982df899b1051bcabd6c747e6a59ddd4cecdf06fe7ce6838882. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:00:36Z), 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/GX53U2324622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09012edeca43456f4c86a634ad3395de25588c2e94a34db01f09a3281ccfd29e. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/GX53U2324623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf05708687c372ebcdb611b76662e8529183548816a3216d614d779a60a8221. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/GX53U2324624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387ee116681bea6101d7e5122399beef3cdf0543c243b45ef32b49eebfc4d218. 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/GX53U2324625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91062844f6273778b1aa88bfff65fe0335b986f442ae424bb6ddc9b6d5126bda. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:43:31Z), 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/GX53U2324626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612a8c2bd9a18f4d96a558f399918172ac841d419f7d4c67537bde97e572e5d1. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T11:37:58Z), 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/GX53U2324627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79f97f3cb7d7af3d4af532d4d8d397578667d26a988d4ef71cf8edc27a2f967. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/GX53U2324628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814fbc46bb47fcdfbbbecef0e70a7ee3a1e6597342233b807ee8729ecd66c6d3. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:49:42Z), 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/GX53U2324629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa023c402612322a37d5a00860e455123f9217258450f9190d9ad9930d09df9. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GXF9Q2446361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d908b86b6e1df80d2d6d9294f7271864cbdf3497b622320f41649df3eb11d0. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GXF9Q2446362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3511248b80dcb742f6d05c4c19e66782e78dceb61369c31c36a558c32d59629d. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:39:31Z), 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/GXF9Q2446363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c8e614bca6e48a1404fee94800d48e867aa590a9fba132ea6d560460be47c0. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/GXF9Q2446364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7aa2863a00d2af3edca1ac1e379310d8a16400089a9f64366f41659198acd81. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:51:27Z), 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/GXF9Q2446365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7f33dcdfc49586297e16b21e576d85f50662581f6d68310dc0eb874331bb3c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:59:41Z), 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/GXF9Q2446366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217dc215784bca16c8c1dc9f5c44a5841b9b7be861c4a63c3ba0cdd6ee8879d6. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/GXF9Q2446367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936f84c0aa532242c117e2782906d3f2b995b4906af8db0b31c1811062c7095e. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/GXF9Q2446368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd889e30371ee78248ebe8fc2ff891f04466c8d4dca1c419afdcd888c928910. 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/GXF9Q2448989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d221427962240162dce97b293140f8e50ada9302352039a1fa430350be9ec3b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GXF9Q2448990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1b19d4ec01df21c365497aca16cc61c7b6e4289b12f1b9e5e31667de5f617d. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/GXF9Q2448991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804518c371566e1c0e0fcd033e977aa1a4bdc9fd19df02d74f81ad79e01e743c. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/GXF9Q2448992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe392c522cd3217926da55316347e4381b129ed61cc21cc36a2aba47d62561c7f. 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/GXF9Q2448993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f49fc5234551ac5e54d70d63b24a74eb410fbba03878314bf0325ed97122ba3. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/GXF9Q2448994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b5a0d6637c0b5e832bca3e43cd47926bd3bdfe6c3ba506d1e03120d2264b3a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:44:04Z), 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/GXF9Q2448995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a208aed2ea9484309d07bdd45661310d80f6149a53453bf3cfdc5f0eebf6da. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/GXF9Q2448996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60bbf9d077fc84704a386dda873f8dac64668a909a7aef67ad3671f1faa2244e. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/GBLFP2524007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x117420395df84529e6f9a819da30a9aa283312c5fd8729decce1f9c0d6a5504f. 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/GBLFP2524011.