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 0x98d9437a1b00d2cb113596e03c2b92b03b7752d35fd51fed7d7a278ac32945f0. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ad23c723-2f08-4cad-9c4d-71c6c3dade8b.json and https://artists.proofprofile.net/proofs/artist/ad23c723-2f08-4cad-9c4d-71c6c3dade8b.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 0x90ae26468256021cccad669c8e2c80bf4e14416b53dd7f75ebbeb9f0eaea510f. 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/USDXS2202159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36a341bdf176b8fd77e986b460bf0ca3cae1fe20fdbf5fd146c12e48e840804. 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/USDXS2201671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48daaf8cd372d9d6343bd88d1f5cf5e9c48b2db6348f494e7af91738419db5ca. 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/USDXS2203017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f256c8ce0529385915022a5172b07b35c040d231ffffdd30e226dfa2c4986d. 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/QZ9QQ2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ec3f2b7ff7f2c925b4ee0d1ecf884d984e34ac7a5b61d65106211e89e47a74. 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/QZ9QQ2200094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa829ec9ff291459af37244ed5b24b207b2b98d1c0215d270549cc60ef482582c. 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/QZ9QQ2200095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796280c825e3e8b3803707ee54ff73d0c022113af5f36d34f1f1f4de0460a84c. 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/QZ9QQ2200096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4fba1d0784b4a5f2f1ef8d41251f3eb6621d87ebaa07e8a690579e55aacdec. 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/QZ9QQ2200097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8cde24edf4401c46de164762cc135dabe27b598afd56f043b93f095c7bfcc2. 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/QZ9QQ2200098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ac097dcad8eeac0ba75f672aa695ff7bd07471d4ed53b236771f092a3ae82d. 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/QZ9QQ2200099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247b4cfd51b5c671c731a07cc7157674ad9911936a23a97c96eb17b41673ae7b. 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/QZ9QQ2200100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd485cf61157fa8460b374ba72ca79ee1c3cc92f5dc5c2b7ff8da9f899c8019. 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/QZ9QQ2200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06bbb70af80b3ef8892085d78dc7d518bbaf50799465d18c9305299685e97c3f. 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/QZ9QQ2200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb746baa3a52b59d97935338c3055a7bcca29281cf7c88657fc12658b1d347d82. 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/QZ9QQ2200103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5ab17b6ada574a4f5d7aecadcbebb572ad10d125452791314fda2ba502b8cb. 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/DGA072344921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ad30516092b015fa746cdf88ae1e114547699508e11b3e496d799f3e83a447. 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/DGA072344692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8f43d6db71f959e8431f4a438ddfbd39fc1d57409539620393d8ce4127944c. 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/QMBZ92331626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55af0f6728894873dd579b11d6007c744b94e7fa1a10ef7af08e4b1ea89179f. 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/QM3DF2256417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ea81e375f214e6a6331407db4c5605d8f8cb127b25c93f984969f337f2fa3d. 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/QZ9QQ2300408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165a4845595a60be3c108f0526f0cbd69a2a0b78d3f9a3db48014cc200634e0e. 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/QM3DF2211195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa27ca84cb36915cce8d23def905296a2dba7054214e0672d5f0be24ea283a416. 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/QZ9QQ2300339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ed88985eb69e9050e21d4e1f21ce1f9302bcff5a43766e91246ddf38a48248. 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/QZ9QQ2300145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc7b86fc1c2261ef4cc5db4847f3bbf4536730b9c52e178e3569767ec3a3a1e. 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/QZ9QQ2300122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919ddf14b2bcae75e8d0a98eddd7210e3f5a2dc54e6cac49e1956b4f0f8352c3. 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/QZ9QQ2300097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6f60396e1b3f3ca998f95ae8d06595bc28122f42b1088e03efd981629d9faf. 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/QMFME2292072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3281e7bac4db9b55470ea18b60064a7e7d4c3c75c4b93b7e33c936cfd451a6. 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/USDXS2203728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3151cb5deb056cbb7f6de7a27bfb84cf05c64f8855169c76984b9def7971f9. 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/QZ9QQ2200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82824f1520f516665b0c315c0449786db7b6df061dac113935a8e87c172e0ad. 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/QZ9QQ2200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276b3faafcc640633783439622cfe5cc92ed7b0a3c542616f0691ab23ad337fb. 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/USDXS2203683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bdf18c899d16dc1b00364c2a0aaa6e27b05086a6b08d2a3a5e0e23bafdd9de4. 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/USDXS2203483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4bcde998e266dc2727539861f0254e37c3529d82725bbf2ffda629b57d8b547. 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/USDXS2202872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4583c3cc674739193ad50f336a1bfc0e20cb4bcccd81fe036584ed930e44c5d6. 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/USDXS2202711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2aa395f5fa560a161d50d4df7ed6299e9d74c416315b403df507c686a8d60f5. 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/USDXS2202116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e23490337dd83883415ee9b10fbd390aaed3b6568d0c35cd9628000dd1fedd. 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/USDXS2201582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac47457ab896df00b9151f5e7f5137484c76a154a61b8ec5457fa69c96f18c0f. 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/USDXS2201437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f6e7d0a609fb0b2b47b28551e4ad7b3f0af07b2280d300d2326d6b4dbff2f8. 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/QM6P42350649.