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 0xba65232d8780803126c0d187cee80ca2ef75961ef9a2e963010e77e4f98ee093. 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/750d426c-5536-4fca-8c2c-92573381fd44.json and https://artists.proofprofile.net/proofs/artist/750d426c-5536-4fca-8c2c-92573381fd44.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 0xd6c8ad3f7efaae01a1046f37d920d12d3d9a68339a83194bf31fde39a19d19ef. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES71G2318517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1f08829f0be05fbbf92c5fea1bf32f219b79b0e9a1e5f0d1646a8a07e60a5b. 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/ES71G2238338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb4244d3b5b116081827290392060f84e247426755ba65f8ee6698623654235. 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/QZNJW2465905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee4b3e6b543711848bb509e97df4e20d04639a06494160ef99878e54ff2add0. 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/ES5152400293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf8c49c5caf70f6f0e184a89cf47d0275913d71194b50ddcca473861ddb45ae. 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/USDY42475918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d16d71960e29eca54e5758429e4c8077e8bf23b0fdd61e5c62431651890db1c. 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/USCGJ2499177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ca34ffac106aed4ac48d9fd813242b5651df22fe2e90832a1be6c921a90cff. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES71G2402440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbefb0db103cf24df29dcb186e91e366501a759f4a584b005f6fd659e86174369. 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/ES71G2338931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75178e31a47468518400e9b298cd59d2f09e4914a8eebca8f4ac1a672c6cb301. 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/ES71G2336080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8dd9726cd3abd6ab90728a89bd15e79e3df290780f1392ba3e35c4092d13d7. 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/ES71G2328985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aeeee2df301c6af256938cee1b143554f2092a33abd0ec6bad5142f6c966380. 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/QMBZ92367782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068270c2cf575b732318c022d1e521fb766d38ffdfb0f513d51d53012786dd35. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZMZ92385253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3671df99a8d44302aac596bcc989a53be2891dce627a37a36846a0da105759e0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ES71G2305420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082f27e150fd1a6c0cc3154d48100ad90890e960897ebcee9d0919f8c536a51f. 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/ES71G2308095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9496c05e66a7da7d4822a2c591a15f80bb3c74960cc686cd053fbb264033579c. 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/ES71G2310867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082f27e150fd1a6c0cc3154d48100ad90890e960897ebcee9d0919f8c536a51f. 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/ES71G2308095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3671df99a8d44302aac596bcc989a53be2891dce627a37a36846a0da105759e0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ES71G2305420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9befeed74f98fcdf89110cc1bebe91c4f0dd669d3d51d480e1bc476aac29d71e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ES71G2246538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e440b3adf3a519dfb4306240f43f17a8d94455c107ee6cf463e1197eccf478e. 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/ES71G2228631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d7912a2ff7f8f851f06c8d2dd1a1a4e4af4a07b0f2f93a4b590c042463b81d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ES71G2221726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ea09e4c504bd40bfe2ddfc1b3d916d002a130e3f5f068f2cbe6c3240d04138. 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/ES71G2210109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c46242b97533b199ee4795b0a8cd1306ce9d1369ec3f1bef6ef4461251ec00. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ES71G2131592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9db5f02ea150d9b2f642bc9327abf2e854397ee29763a462b1ec64a3a4aeeec. 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/QM6N22170720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934495793680f3fd8fc2e4a5adf584d23163e057398725ddaa3d1e6773462b26. 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/ES71G2123913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8d3ebb370a94e52db92e13b985c2b09c0c3b5bc70bde392f563a6e13a3449a. 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/ES71G2101345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a2aab45b13bcecd062bac008ccb21be40ea379aa060db5020894dfb81046d3. 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/ES71G2053313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5b15c0b469c3f927414d04279a1c0872abb20544d84109cc27b8654045b724. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZES82043517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1b7ae09bbc67c1566b01aa73257bc7bda92d2ef9f2117598c126b6135a9e1d. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZMEQ2204416.