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 0x907254e4a507d9993cdf7ad0bf65b85f52455710dc23dbcb892153bd3327d36b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/73425926-ee53-43c8-a43c-ad3dd7edbd63.json and https://artists.proofprofile.net/proofs/artist/73425926-ee53-43c8-a43c-ad3dd7edbd63.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 0x566f8e0dffb7a12117f381c1c43af534e8acc4d2faef30f7c0f3ba028a4aef8c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/PLU241600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0472c5cb10154ca4f34d0c9e7f48dad9b6b0a564f63245831ea3d4c7c6ddcb1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/PLU241600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54eb476a3287619ba324cfd7b874aaca339df48e9ceeaf793ed7713bd26a0872. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/PLU241600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120b9a91793564b6caf3883ce4cf89884ce5f574a61bb46937a2ade74313cb8c. 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/PLU241600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47f3163295795c92f7831d206fe7f0649ca66b9e6725cf4a17bea032e773663. 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/PLU241600013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212c9347c011664fe89e4579b3ed245a7bd297c19fb94ec220798303fb357758. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:55:06Z), 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/PLU241600019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62be60193867c59dd686923c1b6f7bc40fa41105ee7905b7d0afe483af8d750d. 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/PLM151400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb208cb25cad9d8e14b13ca3e32fb6533444ac89c445d2548c72cae718a4d8334. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/PLM151400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc0e74a33a32d379c788c96ac9c0e54665046ec631478dfe71f526824554fd1. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/PLM151800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25785820082eb9458f7e27d1fc2e2a060c670d21e2df1a917ac22213a8e8bf95. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:04:44Z), 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/PLM151900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74731800178025e5c3ce91ada81fa90dac0218157c0f785d3411b708376a492e. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/PLM151900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc964d5afcad0675330f7e1aaad3bdbe6de6065b07507c7e1b13d880377c9e89c. 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/PLM151900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1414cd9138862833eb73e615f574ae188b5bcea694ae79552720e7f4a8b01139. 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/PLM151900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e63b3b6de412a5aa64ed055e5766cd67459834cccf386b87853b66a90bfd6c1. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/PLM151900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32992d194a1030387d1932b08fde1a314b0f6442b31420780ce6236970bc032. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:04:44Z), 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/PLM151900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e7bda33b8dc1f1c65643ed994a1118bd67b878c4c138c7912f407921821416. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/PLM152000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5aa86425091aa1a1c330474556537ad7918770009e9533c74a205d74ee53ba. 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/PLM152000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa50fb61704fdd893b09b9513cc6978629e6679045480eaf1f9fb0ec39e895c43. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/PLM152000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a39ae28c4e4edbc9f8081877b470cfc3a27f706fac3e893a355c9580497fdc. 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/PLM152000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0f6c838334f9b75d9ada20262afcb4a62666d2a2190eb6b1add45e7da5487b. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/PLM152000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11bb06e98146b52b7e2bf234e3794cfed153b18d8d700fe6eed7fa4f90814379. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:56:46Z), 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/PLM152000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733926e93406390ee5230f9eca9c4253e91ad29474ec5fd5e8694e1c6017cfea. 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/PLM152000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974f3327dc8510f730b3ac0bdfaf379674c9b1f6184375a81058b2ba80c51776. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:16:46Z), 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/PLM152000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29960d1f704a9353c39eed8db3a9dba7a3331c4a79ba0656e4bf2cf067221241. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:42:48Z), 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/PLM152000025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd66fbfc8a9efc72169823a513ecedc9325c020b435aaf3a8b9ae8e620a56390. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/PLM152000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef32411cc16d066da0e6bc5a7fc1fa387ae9de7bfbb133b6b7a6e2728b31daa. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/PLM152000027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc514229a2e8509b1e545ae42274a4f6870c1affbf05e887760669928f686f432. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/PLM152000028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29119e0e53e874730a0d38bf2a4b36cdb945731255bdb9691e7831c95cfa4b3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/PLM152000029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b30fbf5580fab9eb611940d391df15df3664d2741e910f7313ca8b49902231e. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:27:16Z), 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/PLM152000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c369d2d572b52397276c8392b73078ab49b24012c1d07de407168d844404c74. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:49:05Z), 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/PLM152000032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1306538b4f43829c32f4c669a63c679c275c71c4603b9439bbe25b448fa22540. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/PLM152000034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506c1103755347eb2d30b65ef2a8562aa5a0213f0e5b6797cfb55e1c6f9444a9. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T19:58:24Z), 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/PLM152000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09fba357e3d6e156e23af9a935faf2cca70e18543cc2fa0ffeb0a2545a7ef355. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLA681802242.