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 0xf865be386545d3c97db3552a2ba20b0c67ddeb793ea8cc8aa12a8150b0f053b2. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/858bc2c4-7a93-496f-9fef-a110a510d923.json and https://artists.proofprofile.net/proofs/artist/858bc2c4-7a93-496f-9fef-a110a510d923.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 0x29c630b67c7061e51617801b335e0552aa8aaad35e8e7a77c8ae4512d6808c12. 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/QZHN71992699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ce51028bf053e5ad5b37a793d5ac3c28d7ee06788c51b9793b091964563ebc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHN71992700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c275d4f014e6c25b43127718528b0bccd4cc82c38bcd638407e5bf2fa63adf2. 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/QZHN71992701.
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 0x80cb92d9004f55764b3355105e30ca76489bc49242327a57e9a5eee30534b645. 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/DEQ022012429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ec6d2fd4b1e2d08b96b33cfddcc20cdad3cc2c04b3c45f7a52de0eac760857. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:51:25Z), 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/QZDA72159558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d6a18be8e4cf844e806c11c5b1e3e8fd828b2b8a9e5e023d79500fc3853164. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZES72129112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfabf234b38dc91ac02e6e5e69da69c62341226e6ba77ecebb159908351ed21b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USANG2208329.
You Call It Lofi But They're Actually Hip Hop Beats
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6611691439649848a0564bc2e6da484d00b5477dd3385082c4aee767574341b6. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USANG2208331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296e1ca6d86e29a7a2e256a468c3a771f3ee55b716551563ab62ac8c4cdd2bfd. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/USANG2208325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680a50c411ae297f518cfe65a638782444f30f0d3d4c4447d006c618d031c986. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USANG2208326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c1b0e240f4d9e23567bc52699106bbf34dfc98b53d129804766e61b02adab8. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/USANG2208330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97371e765c49292613831c9a7f419f2c7dc9edc241df197754fa7f45d91cb916. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ITUM72301481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ad44d9203a43664594deb375f74eab8bd2998757e0e9e44af2fe6e09475ff9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITUM72301513.
Broken Hearted (feat. Ivan "Mamao" Conti)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb6213e660d1871b4bb439de587e09d6755805916eabd6da3ceda226db9cf41. 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/ITUM72301510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba9783d95697c5cd6bd521a595043dc1cb90d1de2670134516b750b55603764. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ITUM72301516.
Hope in a Suitecase (feat. Maria Chiara Argirò)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647b89af5d945e72cdac1d2ffad83d1eb3187bd19339c0346bbf2d8e4a6f6265. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/ITUM72301514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1d8352ed01a1e54b476b61031d9cf53a1bcaafad30503d760ea653a2239ae7. 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/ITUM72301508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c36fc35d12a1e40ee84e2baf8b7abb611a65bef4a886c062c5c797f8f4a3e6. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ITUM72301505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0eabac1c9fd91024d0c83edc5463ec0274ffc2dfc88646f712990c101584a2d. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/ITUM72301509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f85b05c3a336dba23b17dda1faa220cfe34bd26034a21dba54f186a767541e1. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/ITUM72301511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542477ad6aa0b0b98ff0c023e72bc66c8a637f268272fc8f9fae5c0f20721bea. 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/ITUM72301512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9838b8623006a194f11a6a3ec300efd31813853436a71c1f4e76dd3502914c. 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/ITUM72301517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaed96f963d64930c305939aeb25dee5c81097f4a9a5af748fee62e8700aa3cf. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/ITUM72301515.