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 0x50b99abb02774266002ccb1f2d178d917cc8ace9a5e0bd0fcb3b6b87c3f628e7. 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/f4193edb-7eb3-42fe-8902-26c8ddaee347.json and https://artists.proofprofile.net/proofs/artist/f4193edb-7eb3-42fe-8902-26c8ddaee347.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 0xcb61ab06dc7a2ac1a6e81ad3edaa2b6ac92dabeacac795206aecb2c24e6bd8fd. 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/QMDA62258907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4b3431e357fe43c1d08eb8c4afdffd3918803bbe63e41d143ffd2d229466e6. 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/BE8LH2200077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9f26dda1b7806435eb6403567a77872efc83431123bcd6937a7b968f4d3750. 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/QZS642136853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0347e1c4cf78c6664954a5639282fb48b0c94d46b881c2417bf67cf6b92d7301. 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/QZS672134619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a20b948bac9b5053f905a7930a6d78bf5ef2cf2015bcc6267a30be715068719. 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/QM42K2284359.
Be My Lover (slowed + reverb) [feat. Whoopa]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1c154f36dffc87a680318747f0137dc994dd6f5f7f47809361b413823710c5. 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/QZS652278406.
Thrift Shop (slowed + reverb) [feat. Alban Chela & Mista LT]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f49db5e87deb07265c7ae134d69cf4b64757eb0f577635909e020fae70bc655. 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/QZS642224571.
In The End (slowed + reverb) [feat. BIMONTE & JANFRY]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7427306adf70a762805a7dcbe58cace232bc0d86b263770bcbd7bb72760a06c0. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/QZKDK2229530.
Don't Stop The Music (slowed + reverb) [feat. Bomber & Eddy Black]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca13ee4b1e98b40a5748ad88e232621075b1f1e7e6f0afa6871e087b19542df. 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/QM42K2227510.
Teenage Dream (slowed + reverb) [feat. Brøder, GRHHH & J R]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ed80368cdba438d93560b3d3ddcc55d8f02a4b1fa6dc2f357b33f36cc12c4f. 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/QZMHK2247632.
Rude (slowed + reverb) [feat. Cour, DJSM & Robbe]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98cc552c7a4e5c7f01efc743f5b42c4b0c01ff7d5badf9097a1c64ccd28cd733. 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/QZMHM2204716.
Deep End (slowed + reverb) [feat. EMDI & Cour]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd043c8d21d6a249988a59b3043d325b56118970c598b1599c1287e17fa67ee19. 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/QZMHK2219246.
Why Do You Lie To Me (slowed + reverb) [feat. Faruk Orman, OVERHEAT & Paul Keen]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6602fbb5f677b93b1b236d312cc8872487063be9ed6897e6b204b5b66991213d. 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/QZS642260572.
On The Floor (slowed + reverb) [feat. Muffin, blueberry & Dayana]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc0daa294759f063a35a647312fad9c7a3d1cf7311c89d8bf3ad823cdf62885. 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/QZS642212084.
Colors (slowed + reverb) [feat. Muffin, EQRIC & Narvent]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c8d3a8bb133816468958dad3f13afb52654973d41260bb7e157068a4e4b2b7. 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/QZMHK2297234.
I Hate U, I Love U (slowed + reverb) [feat. Nito-Onna, Faruk Orman & Coopex]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8766e45b50b60a30f9ee983dcfd59b3b13758f608305d138b61c0bfd249ec7. 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/QM42K2263930.
I Want It That Way (slowed + reverb) [feat. NOYSE, RAIDH & Mr. Kuy]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb2c28d0d803e30fe7a6c0be2e7a3a315731d21648a9c2e2eaf5192a5e1e772. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/QZS652286205.
Mood (slowed + reverb) [feat. PHARAØH, EQRIC & EthanUno]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d18a309a0f5d922f6da6f4c6be46c3ee3de9c5e5a9663a0eb35a11b978c88b. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QZS632289597.
I Kissed A Girl (slowed + reverb) [feat. R3YAN & Milan Gavris]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ef7967010017e1c7713a9b960e5c6b2f64bf43b58f63c6ec14eac448362f1e. 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/QZMHN2225447.
Last Friday Night (slowed + reverb) [feat. Santi]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7ebf092eac26abb2619bd731b674dd4edfeb121582ad35bb03f0eb1efc662d. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZS672254787.
Rescue Me (slowed + reverb) [feat. Yohan Gerber, NEØN & Jason Wats]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a3ffb671a2bc8d5be1ef151a58a4c8a0a45d727793f93033f734cb09eae792. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZS662249144.