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 0x658a6b3fb693cf1facbb965abdc581fcb5c817a1828a1022edbf5ec982139c30. 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/61feb182-e8ca-473a-ae37-1b7ea044de1f.json and https://artists.proofprofile.net/proofs/artist/61feb182-e8ca-473a-ae37-1b7ea044de1f.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 0x4d788d3e50478894dbfdf60ff0a706824955ffa080af7bbdda1c8fac11b8ad0a. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:49:30Z), 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/DEBL60975559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6127fed57e47302fd2f3c67befdfa93f28efe8598c061bd524f3568d2bea528f. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/DEBL60975561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773886c470475f315421e00d6fda820a07630189e14ad96e0c357be0ad2c3b6a. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/DEBL60975562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21cab39404118e3d09fd11c7a347f851752f7cba2d777b9db31a8cd4a7acbeb. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/DEBL60975564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d1a37986e415f870f12cb37c668b711464643ac87d0add657464e3c99d2c58. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/DEBL60975565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896845fb4a121feb10add161266353fb25db14825e05f8034ff988aa58bf3a2f. 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/DEBL60975566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511bc4f701cb1af95b4bf4c2f59debcb00f2c8a87159e1758e6f7ab788118e2e. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:00:25Z), 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/DEBL60975567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a73a2bbe12a4413ebf65e1963d894b3706b95384abf6d7723c10b6b35553b1. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/DEBL60975568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31639cedfa9ad1c2a55c5d71ac7bdf154bf848d40a85c5845915f8b05310a2fa. 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/DEBL60975569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4274547f09c4e0f40f3f0ca737d36d2925e9f24ef4db124c1dff3bd1a729d8. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/DEBL60975570.
House Bird (Alem Sanchez & Navas Garcia Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3920c19df3c9888fd885a735d2875950fe23bac97f7149e0f1bfb8a659896c. 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/DEKB71366982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a20f937f0a7264b36a9730fe0ec3c36b3a49c544c57dcea313590b60b6400d6. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/DEKB71366983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873e6fe25fd9624f7b5e84ee08ffa14e8a23b1d0b22392d8de934801cd6b8eff. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEKB71366990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03b60b439d10ebb156518fe29894c2269e57e96258071cc5a938253ba3d96bc. 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/DEKB71366991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b837f031347bbb22cc961977a85fc3f141ee6345a6ac4dea72a84032d668e1e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEKB71366992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd981d3d50d2759fb28d2a372d97ec7eb603d2d4ad4ccf9f350da3f08421b09e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEKB71366994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621eea1dd4162894369aad398129c5bdf65fa3ed9da3b5e148e8dc57125f089c. 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/DEKB71366995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd375847578e3b8fc9fd2e6c0a073df4823a9d127b869587b18f31db7c39673df. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEKB71366996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac86e777996fc82d93a044965ee1af6affbe6fba1f58470f42c4b287e7a468b2. 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/DETL61903254.