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 0x8d07ad50a032b1e5e15640b65dd724e72c3fac0d3255b6148602ae441b6a09de. 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/6f7e14ba-7ee0-42ab-a72c-59b61a98faca.json and https://artists.proofprofile.net/proofs/artist/6f7e14ba-7ee0-42ab-a72c-59b61a98faca.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 0xbf9d509e9c1f4a4b5e068415814bec3603ae9783c39a80ca9eac4784821592b5. 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/GBRKQ2417337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3e2b628358ecbcb68f35fd3ab852bd5076ee69dbf1d5af96d15512bd2c924d. 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/GBRKQ2417347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af85f6bf151a50723f2d4bf7c322d0abdf09fcea0ccecc5ef6497f7767c685f. 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/QZZ8A2338949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe886bc40239dfa832a8215a3c4a374b47516689939dcf639c84fe1e7ca32104e. 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/QZTV32341036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc705fd61f3b05fc48261fb7d8a0589ec960f09fc879098c89b6d5c7d45c21854. 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/QZTRX2237562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe222e291365aea8c10666422169ffe11dc7743b3d578e673c7ee5da83f956879. 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/QZTRX2237566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d05f1e07da353b65aa51656e50a7aaf0a1bea0cc64a48ec38facfd96df2621. 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/CAF5R2000140.
The Light Is Always On (Champagne Drip Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8eafa7ca79fb57b6b358e8d6f1feb68f8324549a10cb7577f30258c9d38dc1f. 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/US5262023989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb130d984233a3e182043d9dd5f4d30f2219e77a8c35997b2c8eee88cdc50673. 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/US5261923244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f6138c47ebfcf9717163ee3a311514b8bc11b8d87ef34e39cbd6ebb8a6281c. 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/CA5KR2035840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6772472f17192b2bb8f87120d1664ee97fafaab0828f4a7803d5732a5ff4dc. 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/CA5KR1924078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75305a0a30ca57ceb5ff1181a04801908013dbb3ab2f935bf4a481e42cdb3c49. 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/CA5KR1911365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc144f32b175234131df06469e15c87f2880696c4744aa919d90d361ebd842f29. 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/CAUM81800070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6159473cc7ef79a73975ea8c54a6b7c1854fa2e5c0dc1a4cf2582f0e5d740dc3. 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/CAUM81800073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0237d6583e1296143d34335ee987f54c6e23cb8c48b72875fae44195566c695f. 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/QM6N21764702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47255caed00b7cae472db451bedb8707e3d67168d9914460e7a337d293e3914. 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/DEA371304664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd189fb21929c4acae47f934409364e93bcc59dbc844dc5e2f524530793804a. 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/DEA371304665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56d05236c94be6596aa78015c0b5a1b8d997e121af2cee70693ea9d34bce004. 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/DEA371304666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b0b9a3751040483bfcc6f464a50ff2fa92cfafaa562c7d379b1b4f3ced1879. 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/DEA371304667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5147a878998c784fc7d621d7a7f74521a13d17b44d394494ffe7954bffda848d. 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/USYBL1601097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12911488b801fda2e5b95c6f77a34a943ad634c56b7caeb3ddea8144078cfd8. 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/USLZJ1606933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d3a5666cf14c64f9535f3ba18d8091005f6e0b9be0fddbc58c10b66f2b9210. 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/USLZJ1601905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb124d10aed83a96999f635152dd56dc43c16ae3c83c5b46f63151cc1b55aec. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USLZJ1601906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00bd41a3365a1bd1a8f25302fa09c652f573e53fac0617ee8318baae192b735e. 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/USZ4V1400118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04108bbe8146d084a44a8a372e8e65752991df0b775cee89ae785ffd01170aa. 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/CAUM81900018.
Silver Lining (feat. KARRA) - Champagne Drip Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3babf88a040e0486c17d6967c098f33dfc082e9ca23233673a72ba6889d2750. 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/USDM32022920.