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 0xcb2382e6d595172dff001a752d4a84f33b6bcf5076bfc2955d4b1f2a6832f95a. 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/7f326d1f-217c-4569-b551-93c4ae80916d.json and https://artists.proofprofile.net/proofs/artist/7f326d1f-217c-4569-b551-93c4ae80916d.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 0x8a3342c69c4c17ceb7956f37b01d9b0cbd0ba4524a275e86952a71c8e79c72e3. 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/GBKQU2353293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff85650c154d7af7abcddf914f2c0473211c4a40b9bd2eb615f60f4e500fd98. 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/DEPI82321462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf935fce9f66d6d889a57a917aafa7b66d3558b7b906afbf0e8b8532bb68232bc. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEE862102444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2d8731e3e635bb593eba4e40a5f6ac53f405811e5a5e4dd3e7e288106cafd3. 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/NLYK92300078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097e98fd8bf3f0e7f3dba330c776ae3943c7feeee7b1f65f23893de66c4c8370. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/NLYK92300074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc8853242fbdd076651392111400de386a9a3e386ba62e1f10cae4ee7e69866. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/NLYK92300077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea33219e32ef91959b774c56b34a13f35a9182a40d31e2d6a02057f1b6b99926. 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/DEQ122141018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1e21a8a96f6136140f0362620605e2f3d73766d3ae2621d086f80b65a05b36. 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/NLT2H2100523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5447bac29c8946f9db17b4b7a6ddc845edbb0d0d6347e360944df04ebc768ed4. 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/DECE72302944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391d7af7ac0b9935fe47b226bcbaa61d3c4371846388dcc1ebae86b062f3989b. 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/DECE72202206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8247d643bb4e75b29ec6cc348af0990c93026c738cadd2cb31fa09da8972ec. 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/DEH742427135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd5f6f3f089198f3839a52b364481d3c2501d39ea390178db43462ec7791a1e. 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/NLT2H2300999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19002bc5d6057febe0fe85d11b0fc9045ad7450e993a7300cc4f4da4c0c96924. 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/ROGRA2300162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42bd734be087e3d65dd82421457ef57b55eaf0c852590f20ac7efe0adc94f68c. 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/GBKQU2332120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19002bc5d6057febe0fe85d11b0fc9045ad7450e993a7300cc4f4da4c0c96924. 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/ROGRA2300162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfd579466582a96d614127f97e083c892572b24762b30d53ca66576fadca954. 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/ROGRA2202724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694d06b9a3df1d60fe1ab3597feb00164c70dfcfdbd82f10d705b51d948481bd. 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/ROGRA2101952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1390ff11bb5fb6abd96cbb44805b72f2b28530146345331560a0aba5044c03. 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/DEPI82454460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf324937cb31a321e7648b1d397a4dfd45ce6f7e9700b3ba1fd8f62a7d328be. 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/DEPI82452441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6680c6884731a675f3f391dd799caf70d876ef77d27baedc3c90baf729ecb4c. 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/DEPI82401735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30af0af580c390e3721221bbba24b4e914e8bbbcab3f604271543276466a0c3e. 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/DEPI82416414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5952503b066f69f3155ab04014e8257dc47cae6dcbc65127668cd44da24875cc. 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/DEPI82313057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf324937cb31a321e7648b1d397a4dfd45ce6f7e9700b3ba1fd8f62a7d328be. 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/DEPI82452441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f7c225a68b5d62d0bc705dffe63b3505a684a969740d830e43991875eb6e1b. 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/DEPI82404784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30af0af580c390e3721221bbba24b4e914e8bbbcab3f604271543276466a0c3e. 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/DEPI82416414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f7c225a68b5d62d0bc705dffe63b3505a684a969740d830e43991875eb6e1b. 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/DEPI82404784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8fb6a52bd9162844618bdae42ad68ec8b00e2b6acb399dee32d58ffbe98f75. 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/DEPI82415494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5f2349bedea7239b552b89f518289a846bb97ce08f7fe92db9297de97a1bb3. 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/FR2X42294963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6680c6884731a675f3f391dd799caf70d876ef77d27baedc3c90baf729ecb4c. 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/DEPI82401735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6680c6884731a675f3f391dd799caf70d876ef77d27baedc3c90baf729ecb4c. 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/DEPI82401735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23ca54a85d2969133186b3f77c50267a2856530e81932ef2d49ef7a5730b327. 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/DEH742511784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64819260589777f061e10ee27a9e2370dd4491ba867a7391668036d11347a832. 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/BEIW12500266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88173e5d58da7747ded21977b98dad1d77daebd3deae9fec2031655ec1f19b5c. 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/DEPL52100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc33d5af230438d3fb84c1fd5df35f824f55959384de4efc7eb1b140b972ba4. 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/DEPL52100001.