1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x9c2fa4972f2d1fe6da0c224ad62721fff40edb65340a7d8869b466e290c200a3. 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/2b03af9d-3745-4d3f-967b-85278a748c88.json and https://artists.proofprofile.net/proofs/artist/2b03af9d-3745-4d3f-967b-85278a748c88.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 → block OTSBitcoinBlock must exist at that height 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 0xfeeb9f57b79b2acb931cca2d51997ffe21f2ba5ee4b5c03239f53bd21461e69b. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:41:11Z), 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/USA2P1352373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7f50986b74d6724edcc5a834a061a5a3c2ec9ee4ce2dd664673a164a7071bb. 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/USA2P1352374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c18a050a8dd70eaacc4221d4f1d49b6d5376acd1920ffa3cc918e1097d3b237. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T03:55:44Z), 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/USA2P1352427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230168b57d95451ada8f5e6e42a2da6b1a9029a0cb446c57b78759b2d7a20dc2. 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/USA2P1352428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836bc66c3f77f75a3098add2e64664a9ec7aa52e95cecbe3d56c0d7cd265ae85. 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/USA2P1352429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3128dbc6fc8ee8e16991ba4d77835000f2f19e5d0470588853eb8adf6b9d74d9. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USA2P1352431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc12b146be094cea59654b4e032b4c1362ac130c64bc8e1f3ecd104ec660ca2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USA2P1352377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0cea24e5078b80fcc175036b7a0984b408a79c9edd4acc3d39b77673c86a2c8. 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/USQY51427208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a3055e3523136fb2fdb6982c952ffcced01c19bb7694c4021cace0200d3071. 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/USA2P1352380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015e2556abf7d1a2ccd25ce13166cfd2401eba21c96fb2d7af21d11b33c9032d. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/USA2P1352434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390635b2b7ae209981618b4b73bc25ebe89f8e41a089ba8f3c7a6dff3773db5b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:43:09Z), 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/ZAC039501326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc028164411d55096a60ea3a8063113027ff587b9b63335e64a9461ff3ef74bab. 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/ZAC039501327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56bf1e7c83d3fff004a55dcd470e8412dacfa814059865af816d9865cfe60529. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/ZAC039501328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc996b64137755a687a2781cc339cd5b8cb7c8844e3b583ae7fb2a1220539f400. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USA2P1352385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cfec36d633b24a73f1ca796b5da57531ffa5dede5493b0e9386b5986280a19c. 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/USA2P1352388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc616a9a5261ade388750689c25c5be52a85a7f5b5153ef97627c4152a0f09137. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/USA2P1352391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8a2e606849920cfdaaf4310db305a8f25f0717446d25ab2fbacc0195f7be66. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/ZAC030000467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837c53465f47ca1c1d91308cb5f836c7efd279016840086ac6febbbd6fbab3f8. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/ZAC030000469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd331fdf939950f50785efa17cd903124e147555ebf2b74a11e0e70fc373a37c5. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/ZAC030000475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd294aca71a3ca0305c9fb2b77f8b60b3a5606d81480f6c97f989ad9965dc6ebc. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USA2P1352413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d194979073b86ea263346b8702438d4f3762c75b3db586fa5e5a1ebc4325d4. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USA2P1352415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7801db153e17a8300e61dce53063d107cefed7334707b436633a00915ff5e58b. 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/USA2P1352394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce5d05825d46863ff661f4da6a8a7bdd8e83e12464dbea23d828f7666455717. 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/USA2P1352396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873d2243e830437c7d774cd9132fa22a9760ad2ea416ef6a856633efe9c1da03. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/USA2P1352400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31044b317964437f62b1a7045cdf6f248aeff89780720511f36d9d4be8193599. 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/USA2P1352401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e7ff8fbaab12828acb6588a2096ff6b22adbc127df32e5896744beaa9f113d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USQY51427217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ec4e56c3c21820a9c332bae62d9ac6f0dbf1b9dd4ae729428fbbc08144a6c9. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USQY51427210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0ce597ff24712103319a82ba10ea44c6e685fdbb24af2606bc2f3a818f2d95. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:34:01Z), 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/ZA78E1313234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d55e5edd87a1ef3869e7555b62518ae4e8a149a605f7938df8126e990346db2. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/USQY51427209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3b0eac5246aec3bc6bf2eac70ad72e6d30d7622617bae23e047b8dd2703e30. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:28:53Z), 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/ZA78E1313240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1f28f388433e42a6f2267125223ce3063a9858eb1fbafe96e7d74c35a1ea01. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ZA78E1313241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d76bac13bae72b046605f2168dc33c83b7a5e4d3a4df6f4fd31f4bde972f7f1. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/USQY51427211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ae56797bd590e9348a8f669c97f7ddcaec4695d173cb01af9a32c886b339cb. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USA2P1406265.