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 0x956996947d0b5cd286de167f2839b30ea8ee734e0263b9f94e57f61d15b8270f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a5944d72-1bfa-4b85-bb54-7f77270ef56c.json and https://artists.proofprofile.net/proofs/artist/a5944d72-1bfa-4b85-bb54-7f77270ef56c.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 0xfda9223046646195798b85fde53f46a729b4b65ab0cc9bc5e886028530d02cf6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ARJ131000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c4850466ea0e3a24b84da19122cda4227b768575d74d050f0ceb0e12da1053. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ARJ131000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574bb8a7b298e989357781792cc8562bd27b320539b0cd3f4f143eb920d89bd6. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/ARJ131000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce586a4b9b55149a813353fe208b40fd50fabe773e34db0b982d9224db9e3c2. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ARJ131000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53cca47fb93cb5f97b0c6066fba82ebbf2bdefd884abe11b6fea215b2b4d1a0. 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/ARJ131000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf271dfa31e992342bafec6b7a3251cf582b1a6e5996c6a940d03e3217e561f3. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USA2P1482519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5245e6c83fca44f3672903a31a4c9c248e299986686cb2495277e1212a01a03. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/USA2P1482526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb897ed9805ded36a5de375a6f7bfb4756a85154facf2585e2aededc854b529f2. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/USA2P1482527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae942753d77a8ae6874292fc7b4c8dfb9036d4e52f89382f26dda718f6cdc17. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/USA2P1482529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943143f25258fbb77b6d59fcb916cc1c395eaf6b6b09bfd0a3630ee61fc841bb. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/USQY51701361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2746f09820d613e443c582b908134aab75c8e6eab0c134c15cc68e6c322e08d. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/USQY51701363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f8c7b0ca4a7064a572f763f395eed4929d358aa5a7b3326d20282bc2ad8e50d. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:34:46Z), 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/USQY51701364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x933e7a277548a40204e425458ef1d9a7647e78a0c9f7d1fbf9d34e8970784050. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:29:45Z), 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/USQY51701365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03687017307bbf5ce9b75f45650d69faf86c2b5f2c260c0eea336555ccc81d81. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:30:40Z), 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/USQY51701366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8abb11e8ac9ee428a9755dc3da6b2e4007fb82ef4ccb13d92548de276930c79. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:23:06Z), 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/USQY51701367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b605e11a85f65165c0411d9c324e4e8fc86191745e70d469030c7be67d5c20. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USQY51701368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd322e05d74970a1d3296bc428b510e3d20b7e90fe186c3bd4bf8704aecc2a4ee. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USQY51701369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1b79ec7735035e10f61c113efa8d535070d49e72ad3ed6bab772c171455afe. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T10:53:36Z), 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/USL4Q2030856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a34bf7fdfe0f53fe779954a19ef13d98f8f47e2651e866eaf5b3e0875250a9. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USL4Q2116861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1690d0b545f58b07c810805a632e13c432585d096fadbcb374960e007c1b84b4. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USLZJ2252322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22e2b7a8b7ae64a92a9a030e426811ae13d020853cfea2995d02fbabf093790. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USLZJ2252323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf853f506d4c05fd2edf0a9d31c5c2372d00c9c354c7f8f340fa5b072b9e7837. Chain 2 (Bitcoin): anchored in block 957810 (2026-07-13T05:55:46Z), 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/USLZJ2252329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62bdd63a291232f1a55f8ecf9bad0c8ddfa85b4350241e2f80899a2374db4d5. 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/USLZJ2252333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3473abeccc24d4173295224e54d77d45ba1012857217cc1c43a3fb044dd0fb0. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/USLZJ2252347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc0c35a123dc863edfd1c164d8179124b288798efff4ebcd21a0083968d13ac. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USLZJ2252349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9b39026b420a7729815275bc5da3625ec707c0b525db9ab4f72a8e54dbc7fa. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USLZJ2252353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e90168b86f81c328e6438bd33db7206a1ad132fe8ff21895c6e08f0459e1991. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USLZJ2252354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec92a371d4398d73b28fc2b1e8c596f4ac5ca74c3146b5c90408ec0e970d4ccb. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:47:18Z), 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/USLZJ2252360.
Have yourself a merry little christmas ( español )
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd270e4ed4478753ea98d39c5d8d0f7e80d229bd245ff2c506e4f05e33a91d32. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USHM22541541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5397ec3a497ab664626333068e7beef6b7dbac096b5bdf9b550054194fbd54e. 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/USHM22541542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1768be6aa13dcb9ae60752c22c9487f3a148b1c6bcaba87e577ae0a3fd57945. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/USHM22541543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf410e77a7b6a761b5ea6a15e1e5e27532e8238a51a7896f58f3d1e55b87ffe63. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USHM22541545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c25134cf79e9a08aa38821dd4509b03cba5f739f089c1d84e4061b37cec292. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:39:46Z), 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/USHM22541546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58417403cc1ce06b4cf56dc053476458272970a682ee3e40aeedf37d3d303569. 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/ARLAV2400023.