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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 0x48e6ca22876f598a1498d55bdb6d5ba5402bef673e6f7bdb32602a2bcb7fcb77. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5aaf07d8-90b0-49b7-9e94-d2b6569ea058.json and https://artists.proofprofile.net/proofs/artist/5aaf07d8-90b0-49b7-9e94-d2b6569ea058.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 0x0af8a9b84b3dbacbf3a03eb654d95a5eca976eb8e3026b1eb1462e4b447ccaca. 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/IL4060901217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x519a3e88c6b1a697afdeee44f5a1c8ef347e2ae36ca2e15fb8ab132797a597ad. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USA2P1802818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4295c7ca99518b162272116708bb2efe55b0af687b7baa1c6bb3eaeca373ebcc. 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/USA2P1606082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b727804b4d475c7c0088ed21c5aeb8b02d6fbcf2db0c3125daba9aa3b30a2a. 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/GBKQU1016391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf2a3a04933c9c2dc744e63cddbd86f3bcb27e41a77a4c9b30ca5e57e13f8cd. 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/GBKQU1016392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9041515c23205720cde0a03f6bf2712baca097512e664713c7b64583462e3d15. 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/GBKQU1016393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5bd9cef77b2618a473215a63530a9da0f817a723e39b0bb250913bec03e33b. 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/GBKQU1016395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99df1e9d3847ef970f5294a4dfd2ca5b651ac293c73c12425de153a367471c55. 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/DEKC41600053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff88dcbaa71f964ea49dc7b106553211ee544c0d24a49c3cb535764d42ddea01. 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/DEKC41500148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf056ab928dab9cf9c4f782d469b87082a99dba002893c53596f4103d8513f32a. 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/DEKC41600110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124d4582f1bd0a97ae5d0e610d2009976154e36d8d499ad7327744289ce8cab2. 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/DEKC41600063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00005a2599a47c9f3d3ffe76087c778833527dbd10c4d4a2154a4e81947e606. 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/DEKC41600034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2f54efe1e1377c36233b6cd12bf54a3aa87a86902ab44ee58e13d2f597757b. 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/DEKC41600086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e442e264ffeb5222634bd1e4c850b6d018ef5956e21fff2396a1fc220ae09b1. 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/DEKC41600024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd9165d4779dbe0bd8bb8fc75d76a78bdb140fda138266184b0f58df76d7d11. 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/DEKC41600111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3ce64b275d1c31118f04beeeebec107abe1ea126fadfb48a6decfb13661d09. 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/DEKC41600076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2f54efe1e1377c36233b6cd12bf54a3aa87a86902ab44ee58e13d2f597757b. 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/DEKC41600086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1325e1759069a7296db1f44ac4faebf902b0f80412d87cb035709a8cf25bae1d. 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/GBKQU1016409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7231cff75f2429b64cc79ac1e29a0eb28bee90e69734a8f7208a8efc1a3d191. 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/NLF711606747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d4da8320d5605107a13271ade88d9418229a97327955af40e2aedcfb6cf305. 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/NLF711606750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce00e9f6be76119aa7280448da43189c703e171fbee4f03ff719ca654e507c8. 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/BRN250700030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99df1e9d3847ef970f5294a4dfd2ca5b651ac293c73c12425de153a367471c55. 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/DEKC41600053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d7d36fce82dbaeb17d8249ae89c3339ebb2697a4cac4b5bad4b67ac01dabcb. 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/DEKC41600089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ea77a8b84788ad83a3cbd170461935136f8f6397f5e11dd14cee51bfe08c56. 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/IL4060801202.
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