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 0xa35ba5451065a5d06eb02b82e7c9b4e5b5169610c3bc1a60d52e728c027bed2c. 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/a1108403-edfc-4c18-84b8-5130f2092a20.json and https://artists.proofprofile.net/proofs/artist/a1108403-edfc-4c18-84b8-5130f2092a20.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 0x8ce35be181402db49cf5ade0dc46bb64200157129a2cd36afe7b40fa907c6029. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEN951204339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73690be842aefd7e18b395c3f738a7896aed3959f3a5744b0e7682805e76649c. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:05:06Z), 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/DEN951204340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c083d4fc88e87062f1350993f281ff1f3de89d20b18a5e6c80f61dcdac51149. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEN951204342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1179832f516d1e8b8c2aeaaffa3744f01bb71c7172a45efffdd66a707aad660f. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:02:24Z), 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/NLP431120496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48edeadebbabfe53c72a09ab3cb43301fe1abf7d3b598e6cc4914a142881de85. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NLP431120498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaefd10ab089602a3a2009ef8e764ae3f1ee3411eedab1e179e47106693948cf. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/NLP431130400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9184d621caeae58c321f375c7ef7a4629bdc3fd95216f9c68634a8f67e5e4899. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:24:56Z), 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/NLP431130405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb05c8152ed20802aa8665ba585d139d0b680cceda516a8cbb80f9ea68fbe937. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/DEN951204360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e78dfeafcb1e729633ca681f076eb8b20b7e96023ba53d68aa81ed0fc73264. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEN951204361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858f8c85478f999859280e916364df0eaff026edc97b53a6ed9010b86eccc950. 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/DEN951204323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1c6821e00a87474ce262dc09c8c44d3d5ad6d9eb3f1c7f3b2c380bcd8b2fca. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/DEN951204325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf251025f842aa3540af0c982e28186a43de94417cdfc0f4384508a9257b574b2. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DEN951204326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66761f677a75f4484faae4b7f0d64b8fa956f13bb48a1653da60cb5a4333c512. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/DEN951204329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd416b872a24606e879d010f536f6d0fc5f90bb76f08d5dce60cb8e33671e11. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEN951204331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67f15cf8ca8cbcc8cd0f8bcc42a366079823b65645d8efbada1b0734ad6fc8c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DEN951204332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba4acc682591f75830a359c607b32909d7bb93addcffdd4b82640eb9e46a5fe. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEN951204334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862368653cf356a28b57e8941adf2767ca98e5804056451cfaf132fb7f47eddf. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/DEN951204335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96e1eb13f95043b9d0ebdd10ca7f552005d3848c8deb0cc250233208cee7772. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/DEN951204336.
No More (I Can't Stand It) - Airplay Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167a7e2d3153b790d13ad87fc3bc423c1718460d1dcd42f3efe3638ccc698aef. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/NLP431130423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d9638efed9c86213aca845958b1d11b844fe701e22190c1039f808dfd137b7. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:50:57Z), 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/NLP431130425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ad33ad38cd3596ec323b13772671bdcb62d8e1b3de60ce0c4641ee022e0359. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DEN959400196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc80a699a514598e177f0edabddd4c8fc86069192a7aed2aa5d449e08649c06. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/NLP431130408.
No More (I Can't Stand It) - Original + Remixes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d38b944be1371eb136d4f5901755f16bdbde99b3c6b833ea3d20d842826fa5. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:18:41Z), 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/SEXRM1800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa731ab7a9310ca42dd1264d37f560a1ebfba0bc40d76ce721266663b2073ced6. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/DEN951700251.