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 0x6900fc80fbb87a9938ef3cda37fa55044cef70320d1e649880c9ee501cf4eb2f. 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/f5106b9d-635e-4140-9a0e-098ab0eaaca2.json and https://artists.proofprofile.net/proofs/artist/f5106b9d-635e-4140-9a0e-098ab0eaaca2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0xe59aa76c02dbf89501e4c5676b87832da413e68f38c0da8bc5516cccc643e6dc. 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/DEQ322400221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3b821d6ae97084ef831cad0d9ea0b3f81b7cf71960f9af3ae17dca6c51b7bb. 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/DEQ322400222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff84a59d8908743438eb6175aedf115ac672fba505809fcdb5045383ae37b05. 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/DEQ322400168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff84a59d8908743438eb6175aedf115ac672fba505809fcdb5045383ae37b05. 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/DEQ322400168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff84a59d8908743438eb6175aedf115ac672fba505809fcdb5045383ae37b05. 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/DEQ322400168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd856c5410dd857f259143ca465d7a743772e15bcce24cf4ce67599d930c8c633. 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/DEQ322400402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3b821d6ae97084ef831cad0d9ea0b3f81b7cf71960f9af3ae17dca6c51b7bb. 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/DEQ322400222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59aa76c02dbf89501e4c5676b87832da413e68f38c0da8bc5516cccc643e6dc. 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/DEQ322400221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd039304a32920a2736f8b2b85923e9342123e12e780f7bbb162ab396c6b1b8. 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/DEQ322400403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59c17426b700818bb31b64cf9211ae20e99c884b347600d6dd34696cbe33f07. 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/DEQ322400404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27e347d505fcab62d2f59c55054e325ded480809e2935d6fe91aa5f477740a6. 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/DEQ322400405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6063df7b0a65000f4f61f36007cd312aeb8cb6c832b1608beb30cb1a38734ae. 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/DEQ322400358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1557f7d0956807f80f1be68734fb6c5c8678d5ea7057c9b342561f01e6fdcf9b. 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/DEQ322400406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05db6be6904d34d08093903135b469393e4443709bc79f995c5664db0458bbf. 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/DEQ322400407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7e261b8f43d2ca7390c9904d935291a40c6036d0fc6575926b55439a34f256. 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/DEQ322400408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06eeef0143cf14f559315635e4672b6955fa8d911c51d254487c19f76d0f968c. 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/DEQ322400409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12b730e54a2a644c2bfa073a16d585c09c0ba9d8c5dc7ec9cf0ea5723cfe89e. 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/DEQ322400410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb3be359f2a11557812bfc48086923afd6d0a05846b91343e92962c2cc70900. 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/DEQ322400411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd31ab7e41572ea15647f4086f803598d3774d6dd309b866cc00141765320ab7. 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/DEQ322400412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b755a420f6f4003c44cf9242663f1de378f3dca57ebf61727689c4fc961d855. 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/DEQ322400413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7648ab12f8168a4e0a0e33598ec1ae14b6b3f52bd43ece9b1f4d7b4fc831f1. 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/DEQ322400414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175c231ab5722959f1e069d73b5125783756812b4acf0b5187f3a16813962c3b. 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/DEQ322400415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3e6a6159bfbdd958aec55e50ed2c5a71ed2959c2a1bcc321e509015bb57a21. 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/DEQ322400416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a01e2bdf94c914630a3c254112d683d091adbf2e5e26320f254a6bc162b08ae. 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/DEQ322400417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1890ba904feff6023704587450853e49317e8d6b24a13b0b414c84b8b8afea0. 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/DEQ322400418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da26d4e98256f5d56db270576a9bcc5047a8cba036ca99fc09ced9ff65b1e97. 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/DEQ322400419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06eeef0143cf14f559315635e4672b6955fa8d911c51d254487c19f76d0f968c. 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/DEQ322400409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da26d4e98256f5d56db270576a9bcc5047a8cba036ca99fc09ced9ff65b1e97. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/DEQ322400419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6063df7b0a65000f4f61f36007cd312aeb8cb6c832b1608beb30cb1a38734ae. 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/DEQ322400358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59aa76c02dbf89501e4c5676b87832da413e68f38c0da8bc5516cccc643e6dc. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEQ322400221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3b821d6ae97084ef831cad0d9ea0b3f81b7cf71960f9af3ae17dca6c51b7bb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEQ322400222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff84a59d8908743438eb6175aedf115ac672fba505809fcdb5045383ae37b05. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEQ322400168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6063df7b0a65000f4f61f36007cd312aeb8cb6c832b1608beb30cb1a38734ae. 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/DEQ322400358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59aa76c02dbf89501e4c5676b87832da413e68f38c0da8bc5516cccc643e6dc. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:53:06Z), 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/DEQ322400221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff84a59d8908743438eb6175aedf115ac672fba505809fcdb5045383ae37b05. 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/DEQ322400168.