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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1d1f9489e12998835861505306e94ef62579306ba2d3754cf20d6516a9064e. 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/bd922948-c248-41c7-b098-becc77268835.json and https://artists.proofprofile.net/proofs/artist/bd922948-c248-41c7-b098-becc77268835.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac8139c3bd3a0f9bccfda9ad5acd09ad74947a37e6c91f546f59e406d8608ef. 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/NL4AJ2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa330b10cd1f94f8562f0acec15e7998202770cba19a63f4bf8a36a9365d9b35. 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/NL4AJ2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d331672979dccbaf93982f26d8f82aef95df90bda5655e05dedfb1dce0078e. 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/NL4AJ2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7db51af11275c45c6b21ef6b4e9ec252895cf2fc6f66e5c66cc1d795ae958d. 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/NL4AJ2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd360146b37fcf8e8013e110a88bbbebc2dbcddec03f39d54c9bacbf3d118d6d0. 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/QZHN71949947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422b46ee743cab10dc04758357a3addabd9608435d022a7a2cb17979c96ebd99. 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/NL4AJ2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaefe49c26e41aa5c880d55d9b06c663f26c1b994ebca24ccfc59d40a0d027925. 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/QZFYY2007877.
Ik Ben Aan (feat. ADF Ricky, ADF Lucky & ADF Rocco)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50b65706f7524e5d69c6b7fa4763e6ebded8a561d2889ef7f4aca1e882abc51. 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/NL4AJ2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316f078caadaf072e2d7a11b24686ad8f56ac0bfd296e612ff9de68465eb46e5. 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/NL4AJ2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39714717fa7b929610cd3db8efa5f0b0ec2742ac63bc747baf2c6647f810e912. 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/QZFZ62011581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea14b90d1b0d61b916b9bdb871e3bd78cd570198efb05d28e2053331bdcd78b0. 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/NL4AJ2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a087be914a9cc531787f0e51f04ab72e1d163515e7654c7137da8cebd45925. 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/NL4AJ2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89fb439cfd4738f799520862d4452cba3f6d4b94d4d23a8356368d419ea2542f. 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/QZHN71988783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578cc37ccdf7d4e88de29f1279b1066471fc7a00d72fb597a6ec91d63bc66437. 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/NL4AJ2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916b5237ba13b647e15bd64c9894615093ac513e70222c9934043b5116b5abb6. 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/QZHN62004988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f04866c28c8843216c27e803506e8b80ec5a253ea5dd387fcb2370ff3f5ecc. 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/NL4JA2000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc5f774e326840d3bf3c67d8a206c36047fc9cca9ce1d3f47b196052a202c37. 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/NL4AJ2000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a942675ed03ad6c0e598c9960739709790732bd345c1fbf49097246695f7c0. 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/NL4AJ2000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4101b1125d9ceba2400d4b7841d24304901e176d326733a8ad7fbcac46e93440. 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/QZK6Q1907790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68cbca017fc5433e4b726fbdcc8400c8aa61c72f204bf349e549ec896f76f3c7. 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/QZK6G2491054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4617ffee08d98e37d235ca6ecb4a3116d3ba7d72dafffb3917a1fcacc2868d6. 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/QZES72364961.
Messenger - Daedalus' Revenge (feat. Lusho, ADF Lucky, Yozef, Black & ADF Ricky)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadaa661a19c0d998f0073893f5de5fde948ef49c4d787ae4a3a5cb35cbea4305. 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/NL5MB2200049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed66f770c5588bea9a25d83c9781554327504ad44d246522b5d32e427ef425a. 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/QZNWX2109785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f610293a9e48511ceb1e6732b2c4e45c9f30e63873213fafb18c5880d2d3102. 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/NL5HJ2100067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x273391a1bd0535c577700ffde22c4cafbe7f5ebb929662e2342365c272fb5cfe. 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/GBMJG2110612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47817cfe37839babbfe76121ea5329a4c29bc5603945e7960b2794b495788186. 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/QZNWT2072294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4739a46886bb8a253908b688728fc5183b31326dc87dead9501df58bb4a531. 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/QZK6F2071281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb03d6216c0610235752b3810600ceb66d5d85194ffb4a272ad70308d4d550e6. 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/QZHN42086060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce4d29515fbe14c5aeeab32cf2eca203b0157a00c6308b575670aa9c2c348c9. 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/QZHN52124977.