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 0x783c872a1f5c4c8fe884e2416987e44256d1f5e52949cf9f03c5e59436274283. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/73dd4460-a74d-45a4-842d-dccfcaf5d47c.json and https://artists.proofprofile.net/proofs/artist/73dd4460-a74d-45a4-842d-dccfcaf5d47c.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 0xd56720f7d1069902743c1287515399a6233c1c7f4f84d8bf9cfb7cd68fcd5744. 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/NLF711700429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb94cea2fa41f9fe2be29704a38cef9c7026dae75f0f8fc5c844950e2577b99. 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/NLF711705442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096f5f4ad4dfe3a6e8ce4c799614aa14a29d0ada6dfd2fba080cf32137990398. 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/NLF711705424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281cb744fa72c379084e5903773cd178dfdb0564904a86b9b8c3d8df258c3adb. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/NLF711705425.
Ain't Stoppin' (feat. Jolee Nikoal) [Mix Cut]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf572ec50770edff84522d68cb266123690e76aa5dd5c9bbd13eee357bf3e8c. 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/NLF711705426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690ef4c222c83d10f08129664c4530e95ff8b2d57cf62283733e6410208ab629. 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/NLF711705444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d316086f124025fc6dd73c6a4dcdf5ee91e64a074cd414b9358d136c1c2325. 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/NLF711705427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9abbf6cbc2dcee6b3eb494c94fc3dfef595e1bd5f715f48c06b8b15df2f6f7f9. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/NLF711700752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70126f0cd22fab41ec047ecd1b7327f0eb74a23d008e9355dc6c34ebdc743453. 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/NLF711705445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bd4b9654a89fa312c0df0b948210d57cdeb4f6d1e4b74b052a84c0f8a0e69d. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/NLF711705428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab9b11e210d92812a035a239ac1100378eb85b03ee042a8d3aff81a6b8b1d00. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/NLF711705429.
I Need You (feat. Olaf Blackwood) [Mix Cut] - Filatov & Karas Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2cdfdb9a8f5866decbd3387669ffce5b42d7036d074ef3bbda4d503bc1aab1d. 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/NLF711705447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b34da3c2e365b39abe408eee3fd6c0b09c811810ada32608c271fb9c8abcb4. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/NLF711705430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x917eac4c27b9e44cdd9f7dcc620a5081ce6fd734613f3b7558dbcf176fc032ff. 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/NLF711603596.
Girls Like Us (Mix Cut) - Deeptrak Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456a76c41074915fb77a4af016a782be9075cd41b715ec18255a7d2fb599c5a4. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/NLF711705449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0a87335af4055546a64c04227afb9f441827b75470160cbacfaa7d27fb0db7. 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/NLF711705431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d5418ef845b683fb593e9bfb86d62cf2b262232a7bc9ca0fb179dd906940a2. 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/NLF711705432.
The Curtain Call (Mix Cut) - Frank Pole Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47fc00f9d46679fa7aff0fe553b5286f81b97e7e1e3651632dd37dfcf0f1abc3. 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/NLF711705450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x739140696d224963fb63925e78ee1496bea6852624d51370c1f533fdde1a71fd. 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/NLF711705433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07822efd55db934d2cee296405f63c4a316380d85deb8288408ecad84882f172. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/NLF711701456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d5e56bb5d4a10937b315b1ea17e51c846c7293c6246aa1da9314bfbe115f11. 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/NLF711705434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089e1b68ac40679039fc8ec7bfa0e5ffe104804d2d58aea2f24af030a3b7e01f. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/NLF711705435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe329d12078d7f3f1219fe3263f91fe331e7a0c6d93786adca2be146b7e48b9e4. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/NLF711700196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0db0a5b652eb3d75c6b919ed8f6d7b86e3b32db18ac669e5d6a3a6f36176da9. 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/NLF711705436.
Let's Make Beautiful (Mix Cut) - Tep No Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2cc271e10085c98ff796028b96eae12337c1367f74df63d70dbd9c8c8066c8. 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/NLF711705437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914ecf021bcf7188673887b2e5280c21fdc9eaf4728893f97fff6fc34374a78d. 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/NLF711705455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737bbd9cce4fd60a071742f6ac66510f3b9f52454bc92dc3e16453683dbcac06. 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/NLF711705438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5022b3f62b9c0db4c59f335b476d6c82eb6014eccc06b6c152ddd2ab212c0b. 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/NLF711705439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502cb1ea44930acd57248d3c4511c59208833d4a9e7ce03efe64393ade17de95. 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/NLF711705440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026b93ff39d2b5dbfce6ea1e9415ab2a4788b75ae67ed425e0f2b800f11adc6c. 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/NLF711705441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12bf29d74c1097f06ecdb7522734f0554fac7a2241f8ef2603a6fb389e99b1f0. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZDA82416922.