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 0xd6ad34a3e0ce79fed52f78aa5a1e4cd923052bc97859a3be4c0a3f7e98e3b20a. 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/a4272183-e0ed-4bc8-a020-46b158c39437.json and https://artists.proofprofile.net/proofs/artist/a4272183-e0ed-4bc8-a020-46b158c39437.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 0x3e6261c7f0d2fb9a02d99f40e3be72afd1a49173a086607253f47c8ba604c335. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DGA0H2482290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b6ab8af69408409e6016fad17ce90e55972add95aac5e2fc3e40458d85ae75e. 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/DGA0H2472388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0243be516d07a8ac7f05c35bf8b66a99091e8533159da7dd3780968174caad2d. 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/DGA0H2460226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1426cf24bbc7979633fc1e597e5ea3701828284dcd935c908927a9d1a093f9. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/DGA0H2482275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac82afad84a96d4d02e4d14f97a20a92a3bb08f4a288a56754c1c2ac67a53847. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/DGA0H2482265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a67cca3ce66c79f4e6fd2b094051587dcc9714dc9b145d58b504284bbe33e12. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:01:48Z), 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/DGA0H2482252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf818850b104786d9696dafda2299e26658a5a5b9d604fe6c4440e1594e956246. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/DGA0H2482204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf93c0a67686899a004f9881af1f05637df4e9db8d2b98143b721c2f4d74753. 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/DGA0H2484599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f76634ccb89fb9ec006ea35307a73d623c6cca07920d9bc46cb1dcebcab676. 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/DGA0H2482273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c4a6fb9e3e81465f8495000f99b9d14759930e953d58b2888de86aae0872e7. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/DGA0H2482294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028bcb8c42982ce43ebe842a6f740c1eb015dd9f9ec24469b5369960b68b1bbe. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/DGA0H2482249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5066b8436b3c98d34468ce12517a4c6f34039a52269f53c760ed81125a022948. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:27:45Z), 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/DGA0H2482287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41db0a53ca1575d04bdfa312adddd81729da26b87a9be95ea4e4b936cdbb7e5b. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/DGA0H2482288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf97d7d5d94ae930e1002c709bb87b6dfdffbbb84ee5039c8effe57761f4a5b6. 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/DGA0H2482286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475215b604452185325c1f1c5fd8a561fee3301b2b9495f1b6263be7be0df466. 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/DGA0H2482277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801f8e0cd7caaf910f88ea309f9ea2b9b5bed47687807da56df005dac6d481e8. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:43:52Z), 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/DGA0H2482257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04742eabb33f80170b80e2ffa97424574592d7c391acdb92e4c2aca8c62ba924. 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/DGA0H2482291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf471bd5b98d3b70b91d117b4cccb202785411af02e4419022579632cd26757ad. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:34:43Z), 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/DGA0L2407361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7673d3bbde93a2881e1aaa6eb1c894ca3d786894a635df4dedeb23f0f49c0e8. 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/DGA0L2407355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x852633de15a0f865928be38f7c2f08d67bb39f56fe470dae24decc77cde1aa0f. 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/DGA0L2407366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f629ee7cefbb45f82c1d149c81f1fdbaf7b3b0eeb6615706e4319b74eb9a599. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DGA0L2407363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0130ac16775c00a6a0c7911bfe73973e013abe721af0d5e4f7d0ab6f3d22404. 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/DGA0L2407353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d0bacbc102713684c617a0795b554a405980213135c038719f807a57061065. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/DGA0H2472386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97bbadd0b4ec43a9881111317de4ff0c042a99c0218c5be64fc80240618e3cd. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:57:52Z), 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/FR10S2564197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb79b727d30d645237831311db71bb2de694e5537126f352dee53c4223d6c6b5. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FR96X2546955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2110857410091b545f351f462f35caf9e6c11d8f2611420504d92663acd11e37. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/FRX452559988.