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 0xa5f32e379f0c19fd16c1d7f51a0eb3a11402244e3f41c64255f90f181cb8580d. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/29a157d2-3899-405c-878e-ffb7f0b20efd.json and https://artists.proofprofile.net/proofs/artist/29a157d2-3899-405c-878e-ffb7f0b20efd.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 0x5ab762a0b127c573cf081da0b2d0781e36542985c12cfadec166415288df4bfe. 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/KSA012181725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7297de76843657700614ce6841ead67755012ef47767826dca71aae0fef4c21c. 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/KSA012181726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa7f931909ea3fb763fdcfad8c6a2e28f68f220a8348849facfc89963024fb2. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/KSA012181728.
Escobar (feat. Skinny Brown & Leellamarz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a344f87e1eae63693bfed5e151e2e846bb3de484368cc462364d322947d5068. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/KSA012181729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1752c55a993b772f0189d87ab9ff95a204bae1bf6800a35bb90106facdced118. 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/KSA012181730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7551429e07f9e7660c35bf021f6d8c39b660df07d928c7b4d5cc7f539f3d0125. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/KSA012181731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5312fe550198c4bc572cc9963302132c4b71362b8eafe8d9d5e7bc9b6b04d120. 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/KSA012181732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc16fa7fbdd6a3f7b57fb1fcff63e1e3688b242a2c3a790857f220439e7be238. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/KRMIM2400665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7fc7f994b9f136662f783a644eef2c74b68bf860ef9de91a01a4d0f602fafd. 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/KRMIM2400666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f1a39a961d58695e756b1c17d337d9b3c7e6a9233bbc7ae7c8c93d3e7cc2d6. 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/KRMIM2022288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93578c35fbc73cad17c58e111e1447213be211440eaa71593a1f4ef9d8cb821f. 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/KRMIM2022289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0205ceece425f2d1cb332dc7c199ad436e45dda7ef2db75a6b8d7111d2f6dce4. 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/QM6MZ2462460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf987cd5e12e10716877ad435740bb04669cdf611a114cdf53446e55afe3a9c47. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QM6MZ2462462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e05a213c7b25ddc189c9a8f6d334a0f5ac781cc4b6fddb9324c683cd0e3e492. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QM6MZ2462463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb0237dca0d3fa9f9fba04767e8d69051b9390f660020a1ece2d973c48e3ecd. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QM6MZ2462464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d303ed019dd921e922be542aa4c2acf3e954ee6432579dfaec352986f3fc25. 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/KRE131900029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393c9f6812d166219a0858929fc2ae3db1aa9bc1661a1173d61db03bc49bf4ef. 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/KRE131900030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd402d9e60c612f632411a193d89365b2370b9f266c2be9073024cd2b42bdfd. 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/KRE131800076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9326f65b47d1a6e4f3ecb95f222b7bd42616cebe0a887bbecf6da4f5feea70c8. 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/KRE131900032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4343f1ae0b3ae9143f3b57acdf3c935561d0796ad3d31802c12198e41c8cdb. 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/KRE131900033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907f9d7f7d05de093e65ba9cd6b14092effeb1bc1de99538fab50c34621a2580. 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/KRE131900034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf35cae74fd824aff0582315c928bb918e735093324682b67d49224e23d0eab8. 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/KRE131900035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3efb952976f097d4491e5788c5beee1be4beca81588e00064e8eae0f40f12d. 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/KRMIM1913125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70be78dda879568c655df359d88c63291535b577b81ff7bcb6c52a3bf44a5384. Chain 2 (Bitcoin): anchored in block 960177 (2026-07-30T00:21:01Z), 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/KRMIM1922922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2445b91c5e735b7d7c3a000d1c2104b268150cb5cf2c49d97672c4d0d5a292cc. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/KRMIM1922923.