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 0x056b823e18f937cab80375f3b7fc27e4c90a5c6b7fe3cde5231c21d51291061a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/19311927-7c7d-48b7-9d25-5842706f0e97.json and https://artists.proofprofile.net/proofs/artist/19311927-7c7d-48b7-9d25-5842706f0e97.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 0x4669592a4284729d207c730c3888cc9c5cbfaf2265b69431b4e3539662a7d0c2. 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/AUW631100935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83600df5f944ea1f6b881cd81a609697a3a46c226f2d8f36b4084e278aa0e01c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/AUW631100936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ef7ef50e828f051766cda8fd0ef95761c68ac3af4677829f17d0f6ee264331. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/AUW631100939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468a5b2690ea83c3434024400dab84043feb499d2474fccb2007c4568d3eafa9. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/AUW631100940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x784c371fedb5c745c65f80cd36e955573c3cc7b7d51a2400b31fe1f95f943b30. 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/AUI441800054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f031dabba6106e01dffb8441b4918322781616a8c7a16c00d43354c8776737d. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:06:42Z), 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/AUI441800055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97cd7f54751074b45c1781b4a0dfae9b1bab3b577ea24c7b86a75c1e7d6849d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:08:34Z), 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/AUI441800057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40e61161dd86c735bea728adb88e66d4f0617e7accc62ff332a08fdd4bcfc27. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/AUI441800058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d0d84ca5e17ca282c5301289c34f272ccd936836eda4cf869f29376ac66095. 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/AUI441800060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89727fe25c28c1ac282d9af8bd62859c8e5bbf93d2c83b4634d86dfa4a5e53d6. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/AUI441800062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd25597ebb2408a06a72d7c1fc81636371ab2638124cf7de3cfaa82ef0dcdf9. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/AUI441800063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e567d68f9a3a88220163bc31f6590392b18a3104669241447023a268b9630d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/AUI441900224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c8215dd83f61c5bf63b9b71d7e83576dcbba25de9facfb7412cbd995d3da02. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/AUI441900225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5867028ae59c623cc3dc043e21f975b8e0da55d4d01e249a32381f511e3053f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/AUI441900227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407a7969e67afdb80afe15c32f491c0b13bac4c8a42d4031e673b98c6e5bb06a. 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/AUI441900173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5820b4e35ac3304cf8c00139a15d0ff71fd146605a2ecd1cd19f2fdd6d0e1c43. 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/AUI442000121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1238698a1efd97331aad47450f893c1c75962cf9d3229242d53db47ed9647b. 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/AUI441900221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4970624ae5f650ff5de63ad14f58a74b693578d804d8b4c988f0340ab36dc3f. 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/AUI442000232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cec3216a15b9a50500703959075be8acdaf7e7bf70967f47fb9893c95cffa56. 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/AUI442000234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e26db0eb4c80f1605cf70fe4bc6981caac2db37bc5f8e6ddd446c97c4618677. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/AUI441900222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668e56ea030e647160dc4b3a6aa3ecf589353ac9bedf05ec25ea08a6b6b67471. 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/AUI442000235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86db325505907ec7faf2d43fba7145bfc579743f30c61f904f78ae9aa7bf7428. 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/AUI441900223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd930ba2eea20b0e524a9407ee4042edaac36f5e5c163ddbb909a840ae59246da. 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/AUI441900229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26d6ae819f3713ca542df96772954e2790d42bbfa9ef48c5c9ce1466b10a271. 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/AUI442000236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e567d68f9a3a88220163bc31f6590392b18a3104669241447023a268b9630d. 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/AUI441900224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdebed443897cd6f839224d5db83d701e86db3c3ec3e218c9c8b500b6fb05dc44. 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/AUI442000237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c8215dd83f61c5bf63b9b71d7e83576dcbba25de9facfb7412cbd995d3da02. 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/AUI441900225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb387ac71d0943c6c32973aaf3a3bd03f982d841080b4c52d790047cb7b1874e8. 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/AUI442000238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc373ffe701ac0447752e8f5270bc815a5db7c26d74e65c8806866c827aa9d6f8. 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/AUI442000239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195ec1424f065ea8d06792c496310bb531cd2102101dfbea0db1e44c8bff3afa. 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/AUI442000240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7dd83569c5f8a77eaf1bc0613ebd1b857e29db04216a41071824687cb20eeac. 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/AUI441900226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c06b63992fa9af324be43cd13dd3e18c94725460f560781858b83903a4fa82. 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/AUI442000241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5867028ae59c623cc3dc043e21f975b8e0da55d4d01e249a32381f511e3053f. 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/AUI441900227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407a7969e67afdb80afe15c32f491c0b13bac4c8a42d4031e673b98c6e5bb06a. 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/AUI441900173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff7b66f2750dd2f23a4c3b8bfd23c8b9765b711502f940cc5bbbdcb2c0a1ac3. 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/AUI442000242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf939de24dded85377c0e58881146c692e18a174eea0c1db50cb78876ce7ab42d. 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/AUI441900228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1532e13b60d8b630f6fbd5b59527baf40eb9b67f48bbb82648ddec49d630663. 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/AUI442000243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b53b9ab22c136b7e9aac2a9dc603143602b945c97394754dff762c852f386b. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/AUI442200040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3103678272bce15e424d9709f400a0e0b8feec5d432982d97c40b8b228344a. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/AUI442200104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86efa5215034d1f516be4eaec634b41f1e273d15f30d6357f7af51b29a649a98. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/CAN112401667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c248a13f8bceb7fddb23e276fab1c6ae91df65e13f0c158a29181341bdd5fd. 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/CAN112401244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333ac6a3898392efbe7081d294a568fc22ecc8920e30fef66661c1d7b9068473. 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/CAN112401937.