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 0xb287bc66380e0157d53a87a53ca6eebfbe626874b9cb20291873d4f7ef2d5c50. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0812d16f-e560-4215-87c9-1c2ea3fdc612.json and https://artists.proofprofile.net/proofs/artist/0812d16f-e560-4215-87c9-1c2ea3fdc612.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 0xc13db952dd5162d830fb6bd8cf732099e4ff2994eb9405b7d566940fd561fe49. 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/USCGJ1635625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c58be85b1c1f1104f4307ea1dd64e29776a46bf02ea4f548a4c66c8e6fdef8. 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/USCGJ1635626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd17f4aa2afb69a693feda7fc33e3279ec40e837f95738299f68ab72406206ba. 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/USCGJ1635627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e1941ddbe552bd0910d35f79369ad49208f8052ea30c03f488b43ad9ad7f1e. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USCGJ1635628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf019f31c54208c76dc70f9b3ad959e7ae7fc01cf3e9d5a2e8314ba374327f9e. 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/USCGJ1635629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e98a9273fa6d2fbb49c5c28083d9f77e7c5b80070494f9f7d233a08d230836. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USCGJ1635630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfacbe81170f9908961fe6edcb2b69ff0dd6bc74847d95719adea9f1eea75e234. 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/USCGJ1635631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4762ced1afed238842b500b6ec63e4e33606d8e6d950a6bcfde4b10f4f3bd850. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/USCGJ1635632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe714a2cb2ace5f5040487236d8532b43ec4b8a413a1f9149ba46263e095fc4. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:48:49Z), 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/USCGJ1635633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f308f2cbcd118ca2e39fd88b3d3136e7db895befd4a404a55bd1945d4efd99b. 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/USHM91830546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6232cb411873c39d681db8e879540b08cca53ae8d7bba206032bfb179c9405. 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/USHM91830547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ab0c66fc1dd622c4e368e6906048cb951fd08818b734828c76b118a53494ae. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:03:31Z), 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/USHM91830548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ea9c899603486ef47df8b8162bbc007943493aee893a86db5a1e61db3e0419. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/USHM91830549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d9d6508ecd8a33b1319642ddf3aab96043778910a7d6d3857cb910ea459b56. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USHM91830550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf414bbb422a78f9a54ab7d3e0e201a64804b96fa050879b0a077e79b551a0d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USHM91830553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87bb41f1bf48dfb765b05ec8c44af3c8fa2b4a20c056bffd25e2be98664f007b. 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/USHM91830555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd75b8db6a48118fca9a0675cbcc1335ebb06b05e2cce4172ace5c57cc4db7db. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USCGJ1935062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc7174f9348030041d64416a462e41eda9fcbd975a56ddfce0132224685abb7. 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/USHM21927832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61f50122fbf1a8ad32b7301d4f1ea095a5db000d26d671d06047f691ebabf39. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZFYX2121606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af51962b4914bed98bf16b10d2a6dfb0a1c0039e1365c9c7da009ebc28fefff. 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/QZNWX2193462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02cf314c6e6a6b929e1673a671230346fc01f98ad893a9cb0bde38f42fd27bd3. 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/QT3TB2409714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9271aea764e17616042d3e459439db1266c1c22551c6258ca4939f2528eb9c5b. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:17:13Z), 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/QT3TB2409715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe228911518ab957e8298066aa9e895bce15e6218b3670093ccab3f30e7385693. 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/QT3TB2409716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3345ebcd7fb3d666d42bde413dfa9163a22fbd941e1df44e8d45d52ecdb6a6. 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/QT3TB2409717.