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 0x5b73c60ba030109550d4f289ea90b8514dbc0e6a8b024605372880d680e32204. 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/67793d9b-e061-464e-a5c9-162d1cdaaa63.json and https://artists.proofprofile.net/proofs/artist/67793d9b-e061-464e-a5c9-162d1cdaaa63.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 0x8692b819c0880fe123c87ed19553fca830e41e110a5c115eec837c903c1036d0. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/CZA230500134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c71dece1fd94d6a2971f76dd7e3d853767c51bdcc09481166c54541cf837416. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CZA230500137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c94ded822d85b4faca157822f3ce2317e7761424ea0e7a1d19a01536857a4c. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/CZA230500144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3df2f6d8f5644ed7324ed71136bb40533b7de4e6e5db05ced5f28f0b6f4fcb. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/CZA230500148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f05911a7980fe6d4ba99a6a4b8f4f0a1f43a8f6e86c469fa73c9386c329183. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/SKE781200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684136f2a51c16b0f3ee4859352a898a24d66d56bd808d500fec84caa8b594a2. 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/SKE781200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610ac0408ee4c96f057fdd460b2f7e341ce0865ab1ee370bd98c987b6c4380e2. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-20T12:15:07Z), 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/SKE781200104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ae2803139d028359546529b580a46dc07d88de5e69c2cb05524f4ec91bb57e. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:43:27Z), 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/SKE781200109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43401e69d9ce1026a62e5570fba3ee5648795616daa2795bf1a8ed3aaa56c9ad. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:40:27Z), 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/SKE781200115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee2c737a975154e3258ca4c08e85cabf7e8cfe2ba9d9cc00d3926e42b1dd898. 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/USHM91638254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ce59ea7125ddd52a1e769ab15ad743592091f9e6a09b5228e333a208d3acf2. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USHM91638256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee2c737a975154e3258ca4c08e85cabf7e8cfe2ba9d9cc00d3926e42b1dd898. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USHM91638254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0276e09c854e2c571533a198d9cdf8983824f833cf330a18cb02b40d82fd2d6. 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/CZA231800217.
Krv na rukách (feat. Martin Matys, Tono S, Strapo, Supa, Prezident Lourajder)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1daa058915605be558283a3b45b0e3994d2c23b3d57d7ce9ba474145daa662. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/CZA231800218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cd53d5ef5643f524762d1b82c512630fa9d870a5e16259db9c75c4f978f236. 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/CZA232200109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602c0eed37c5dc624589db3e57c1a40c2fd48df034dea8d928435e160f4ea5ce. 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/CZA232001330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa083667927815390bbd8a9ddd26d59b66cb0d83896982fe2e560c388953dad53. 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/USJ3V1329287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320152b280304a3dc285ebc82c87821c6ff525ff2f1391b9c46cfe9eaf667b46. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SKBC82100123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865afda2f6cfce85c15877a018b92213d0932be2253977307c5c5f1e8a318a57. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/CZBX82400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31845de9b93181c5694f34ab8dcaa520a4905ee84bfbafd7e0b097c19815fff. 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/TCACG1575222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f1559ed17a6b6ff830b9682a363c66c96c3070da9453e51e74aeba916260c7. 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/CZE140400363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96820b4b8604ac2fb3a66d371cc662b3f4bcd70311151d5787a4e9f8b7eec61. 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/USJ3V1164920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x638e522359eb5464289b36c55194cb19b64bff0ecdca2a36591e6b8b50bc05d3. 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/TCABT1438164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb3dc5eaeff12f94735046ae2957298ec0f4d5aca38b0b64483d14920e21126. 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/SKK372400201.