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 0x9a927952268ca03e0ff53dabd3c7cd5ff0c19557fd24fe9b6ed42bd8321e0289. 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/173564c7-2320-4f64-9e3b-87c61915beaf.json and https://artists.proofprofile.net/proofs/artist/173564c7-2320-4f64-9e3b-87c61915beaf.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 0x7825cfd24f76db5f794b4834b0dc0ce768b7fdd083773f89b73a0ec8eff79262. 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/US5260811601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x043568e557760ce075c8c14677b0e8f2556f0ca7a5dfbddfda18c9a5b378c699. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/US5260811602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa326c89466ee2862aefcffd8bbe22eae54f199b30c537a0551bde86672b14801. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/US5261013601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb18c270424a3254ced12cfede7664c1123761f6486edcdda2f8a3f6883ef31. 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/US5261013603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995e8a33561fc44ea9e91a48484ae700c59792d5eb52af1436b0aec559fe7e31. 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/US5261013604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43dc08ba3b33fe5e01369e2e0b56833c45a7047b7d349f2a542826c5f9c65ebe. 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/US5261013607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f9ddae4a750da4827396d40cb61d2b0cc45b74c665fb157bf89e4124361c4a. 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/US5261013608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6364343140554bf984b0c376601da78b29d80eebc1c9905ae572e11937ef98. 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/US5261013609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3723b23c62cdc05c927c5616367f1868ccd9b132972af8a37a61993e1de2b33. 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/US5261013610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23848c74353ac1b583b4c669732902e665dab3ff9902c54b53345c1c677f5c3e. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/US5261013611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb747987c449fed03b644f7c66023ddf1fc770d812729f96dc1f020140cf070df. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/US5261013612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f5ac6192d37b4b7b833d08aabca3d26d3d5db5cd337c74e33da1347e025c9c. 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/TCABF1277680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x051477a3b79df52e8b0b11e8d5f73afe71f57147c805b65b61a8dcc40980f115. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCABF1277682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6281e5462b66823b1a8d2b1620d67ccefe5dda7269c7ff93ed41d8e30558eb2. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/TCABF1277684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9638ad94f3b01d270f04432961865addfebc1a853e0d9dbd641c5517b3e0d164. 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/TCABF1277687.
Leaving in the Morning (feat. Blackbear)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4f24f8515ba67b45ebe0fc522c71c458fe50bfd9accad3e5d79cbb256713df. 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/TCABN1376828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7514a7c698b2040c8bb7dded81bb97eedd48cb66bbdf8475f3ee804e5e6291. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/TCABN1376829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1090934a4c9fcf176d06e4a6fcbd91dbe77d5d76ca151953adb2323bab3d042a. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/TCABN1376830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a810199451a9d8eb72e37f940f258ab697ff9437ea6b8538b7e3b988d90c84. 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/TCABN1376832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f267587fdff02c13f1066f8285f0f9244509dcca7f778a996ade5ca12719f8d. 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/TCABQ1304584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8404208b163fc271f5ec87f7938b0eb4f04e05ef6c0accc715fc1956c8d8ce0. 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/TCACC1435231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906bb4f9afe6370796cc6f623409e123c43c67078e3de80dc30242252c0657f8. 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/TCABK1241847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ecd7bd9a1b47ccfdc9b97822cd71b8284838380e0c4d153d62e84958d8e1b2. 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/US5261014303.