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 0x3ff40e539d0ea8cd6a3215e880862b043e996d7971d604cd36a1585ef4867c85. 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/0515feca-af97-4d4c-87ca-9af1486393a4.json and https://artists.proofprofile.net/proofs/artist/0515feca-af97-4d4c-87ca-9af1486393a4.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 0x57fc68de364cd421f3a6a93b040513b54f1742f423b9534756151c7b67ef2fe3. 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/DEWO71700025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cafd14c26469569f78024548bd9e387b9b54a413ef8cee1f7d9650068202299. 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/DEWO71700026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffda26d7cda8110a39d2438376f5942f4514deb1fc8695378b1b4b9d3efb40d5. 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/DEWO71700021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456a761ce5250f332c606052575195a7261d0691319f87cfa3bdf0efdf90a6fa. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEWO71700028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8255c3ce3b403be7b626ad6f431352f71d2e492ffeef626a5b336f16a841354b. 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/DEWO71700030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe8a81f0cb6f24ed7838491dd1fd2555d448649268f6a6a628084d3ded3f5f3. 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/DEWO71700031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa264e92862b38c9827860a167283919b3652e05a539a25405559b7e84f3708de. 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/GBKQU1646944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23573b2b919c86e39025220ae5745e58900b8fb4b89c79298f9410350e3a53d1. 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/GBKQU1646945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2132197d773c34faf46c7bbf1cded439ab2b0ea7160e787caf6e2243dac8a8. 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/GBKQU1646946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b515125710998b0d43c52d63a9186b32b7d0257e5dee041ae62c454322cac7. 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/GBKQU1646948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa403ae4853e4dcffd2d1dc37e008548c1c8e5bc998d6323a58b9f70324a30021. 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/GBKQU1646949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41bbda14095b7d6c1c66d020711f392bba9d490cb51c571dd2420e9ceadb11dd. 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/GBKQU1397318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7b5091dbc87d67cd96b99e9ee591d405f0a8122efdf45f21f0a93f5e33bc53. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBKQU1397321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x017e9ac9d275abe0d61570a4eb2734533238463eb242ed89879a089e26e2a5f6. 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/GBKQU1397324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9ee48fdc20189cd47a6c267c70a643d7034ceb11404c8b7399c2ad6d501219. 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/GBKQU1397325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4474f760f9b0107a37158d39f70a90bb3311deb5fae961a22eadc43fbf80c176. 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/GBKQU1397327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46879c778af80283185fff5c3b70abdfc8091289a7a26323129967b4ea9ae112. 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/NLRD51632732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b07d5dc01c862e7bd9867c4362a17be377136f5a6deb7f8831c53c8deaca1a7. 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/NLRD51632750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6499cf797d27f4dccd7acaa9b9826aa131befbd6cec1a36d05ad2360dc2109a1. 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/NLRD51632753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6499cf797d27f4dccd7acaa9b9826aa131befbd6cec1a36d05ad2360dc2109a1. 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/NLRD51632753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46879c778af80283185fff5c3b70abdfc8091289a7a26323129967b4ea9ae112. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NLRD51632732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802034559ccfea730e95087a7151fc1a1ed43258602343bbb5c7fd9d4f0c75d5. 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/QM24S2102008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d89c2c9a4aa546e3f22f8f3c67f465378aeb511d63cbf1c598155ba8ccf3b4. 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/NLRD51632515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0743ad2da5ce85c2d341ed352e9ee891bd3ac0ed7fedef19101fc3ad6de816d. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:26:49Z), 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/NLRD51632514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ceb312dab9ae123d4d8c0f02ab18f24de590d9d055267da7c9d5e2ea5ffb17. 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/NLRD51632409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a52055eda79b6ceddaffc1f4d6b568588025b7ab375cd4ebb3beab4da4ffd2. 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/DEWO71700073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc127a816fa19885f78e2b73fee516cdf73735688f20c4898f987b5968a1e42e3. 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/DEWO71700070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9714539a2115f6a7e13215c192b598fc91b3ac05295c06131214bbb44a30746b. 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/DEWO71700074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10be30a12f00fd56c448a6c351ef3e42e8174831ab49a609a64f56fd6f744dab. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/DEWO71700075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c63a713357f5e1810dd2a36c3329f9fb509cb967ccc50b4eb759aefe13c424d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEWO71700067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23463e45f4f957e6257a7bba3555a83926772b332876176881a3736d47a2b76. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/NLD4Y1700033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42908ea7d9d1b234f72dc8fd8088f49717d98db1481029825fff2a3a3ad4f467. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBS5E1100099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0eb069623d30b0ab5df30a2303d45247b29a35cebe424b7b0bec7af9ee3a1e6. 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/GBS5E1100100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700035bdd3f4eaf82feea6c52c4d73e1320b5657890c2409cbf416dac1a7c6d4. 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/GBS5E1100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5820a0cd6ea998168244b44166b9feb3c955a60c6d1d0cda64f235e5e63fa835. 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/GBS5E1100102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd846a5d442c6dee4d6672021cd37163540e99002ab055e076b4eb5449fb7606. 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/GBS5E1100103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8e7111f229d2b164f8ea10d512668b82247c6eb789b2db519636d84f0af39c. 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/GBS5E1100104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46372cb86ececa11fec6d40d7a3516d6adf2dbd850a76797bf29a31f07d818c4. 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/GBKPL1418721.