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 0x74faf10a604058622325512177435a88d96ca09d315d312bad552fd98162d7a2. 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/6a08efcd-f7ee-4c7f-b93e-78c4a3e866b8.json and https://artists.proofprofile.net/proofs/artist/6a08efcd-f7ee-4c7f-b93e-78c4a3e866b8.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 0x94b66eee28ff7458b5fad03390135def12d5201f96d0401cc09de6bd2135f868. 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/SEYOK1738792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a1d3151be22d5b2878f1dbbcc48d29b003575df0effa70b5736103119aa062. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CH6541905601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4c69d06afd986197fb3ec0cf08325f4884df8305e694c5e474607b11a15cc7. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/CH6541905604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf995dcb72759983ca27e4df5ad08a100a7af5645257f8e529ad25d1eb228610c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USANG2070477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e8bfc895b0481d90c4e7ca214445f700ac56aa62862d9c1045e4bb5afc8fde. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/DEQ022011164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876630e1bbfbaa9ff1a6542026a29733faeb326da5368a2e87595972373dae1b. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/QM3DF2277820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ea713159a9fc25b66af12e06af80c857698babd821c843ab96ca1c79209991. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/US3DF2467463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de7e0667918582e6a603d4bd9bf4db9c59500dc53f060c42821fc513a3e51aa. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/DGA062446850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad42ab82634094a690d051046b6f1b126b1856dd42b19c03afcd19cdda8dbc31. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DGA062446853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa587f8a93ab1006d1b755ddf9ddeebdefa6fac53ba33d89210050e3794cfe3f5. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/DGA062446857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85251e792171e0cc0805312f85b87c48305f0e93befa60bb61494fcbb010ad98. 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/DGA062446860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2838b1dce2d4dfde91a34e06c10a406d36a24bd74c8c7f9839e2eca347168571. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/US3DF2498072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971c49adc00e335e67ebfbd5d2ccd3b3df3b20a904bb09581962a6dd187c27fe. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), 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/US3DF2498075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e49f37d2f521ec06ae7f0fde595147c3cd2336a57bb93b695d69321bbf9715. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/US3DF2498076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea852574b0100f479d702c217359a2338801c1a85d158aa69505f9831f55fdbe. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/US3DF2498081.
Walking with Ur Smile - Moose Dawa Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c81ce70748a7a54b254792479a54fa44c5038dcc83e4141d9f85e984dbf08d3. 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/GBCFB2200061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ea713159a9fc25b66af12e06af80c857698babd821c843ab96ca1c79209991. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/US3DF2467463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c026d375f9f0f1de1f3d3c86860e883db0219b8f046c02442213709374b6919. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/US3DF2471014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16bda03998d3e8244f59328380310fcf431703309eec105372a050464123c609. 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/TCADC1749074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd536f0d9c5475c9adabeeaf4811a60662b6305e388c5d48daee98c6d97cb22b4. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QZFYW1921464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e40ea504b633b13d15a24f63439f878897a68c0a8de6ed5ee9e081d4f7f80d. 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/QZFYW1921465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6bb51cad6dea5b603d6677e7fb93ded591137faf5aa59fbbf047b972b00786. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/QZFYW1921466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3cf0c796bd4f38f7cf4adecafaf9a2be3f4794b5954c795442c8b44bdb4b40. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZFYW1921467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f8d33940fe618165ee7be922529c9e15cb863f9d4728d64c034f357f2fe522. 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/QZFYW1921468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0b91f12c55394cd7b43ca057c903494d05037bd70c019f77886bb2b07eba5f. 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/QZFYW1921469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7da08bc77b4ad3ac1deb84965fd02fa0c8b02590e1962530f546687bba5e23. 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/QZFYW1921470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5b7d7045430fe4d10ba581f6a6f980a0474bc3e272f87df151ef9cc5df04c4. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/QZFYW1921471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc111feb9174bce0392d041fbdbf5dfbca7f9fce3361f48b4ff6d9df3f42681b4. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QZFYW1921472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb270849a4295bd1eb66e2ff4aa4d281d6abe9852b2c023f5c07b74710b16eb. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/QZFYW1921473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb76e2ba7bbf843e4c9b8ebcd28ab069492dbe259d5d4eb884f933d864ba21c. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/QZFYW1921474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc2c1dc6718c22619b922d64d6cefa4c82ab74eb305d296582dfc9c615de109. 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/QZFYW1921475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e04d9647f3ccf368c8bc0b45cc43309c7537f68f34da76b01d4f742c258d5c. 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/QZFYW1921476.