1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x3a6681702bb445b1e5f70cb93c7869414db41756b5e6e48b28f461238dcc46f5. 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/ef113206-cc13-45a1-b71b-ab8550e581bb.json and https://artists.proofprofile.net/proofs/artist/ef113206-cc13-45a1-b71b-ab8550e581bb.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 → block OTSBitcoinBlock must exist at that height 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 0xa2afc47876814ca753a1d9c1459eb01ab7138a074ba272d6f83c88088753bd4b. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/SE6QE2407938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a3ffb56504b86c7bd6ce560b904592a68358720a661c1a56875002c9e497af. 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/SE6QE2407942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1007bd8bb80ceb9ec619dc835616c1282d5d22d05e04991f0db64182a9e8742. 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/SE5BU2498003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002a9f1d4839846441a900419b52c2430003f15573e5ba0e482d56a68715e20b. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/SE5BU2498079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc614be8c3220d6a172bd5302da2b5caad1951228c2f97635bd8da5f2b77d2422. 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/SE5752493411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9246c846bd5acf30ed8d503f54ca24fdef0631f81b0a434c5b07f8602425ce26. 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/SE6HN2477752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483dfa0f15f2c50b49a06065631dea3271f18f94b63302d3e68183cc3211e61c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/SE6HN2477753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2a5573ee147166be564ce2d378c154ce0acdd18b8b76b52347432ec3293346. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:20:55Z), 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/SE6I32404842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac37a54f0f7f7cd7dc784b2a4d263785c8d52453c9d12d9ed8b3f0d4c4d702c3. 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/SE6I32404843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef7caaa8cb95b8991792b0991b90e8a9b5ea26667f36d00eb5648b56ef72fa8. 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/SE6I32404845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b5a63b5dd0ab12588708dcd77f994eabe5198fe0e554c774fda4baffa8c328. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/SE6I32404846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5491ed5334969e731b87cd2b5a03af12116d7ffa93ff686919ef21f6505420. 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/SE6I32404849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92df4f4ba9411228d61d30d8578d949255a5284922890153fd8eedc7c883ebcb. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:44:20Z), 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/USJ3V2008299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc271f8fe459960ecdf822595c44ab5e0ca07dc7410d0c80fbf1a6a9868ae5a52. 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/SE6XW2409919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607935b85ae4af3a19ce03bb5a943996814ec5d499d45edec3bb96103b9bd9a6. 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/AUQ9D2402043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3914f4eda4a164e23e44d419bde2d70d42007dfb9ea4212a763ae6cb2a01b8. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:44:18Z), 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/SE6XW2412824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f16b33f832f82cb51ce8530314befc4f26eb740a7ff432287137abcb556367. 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/SE6XY2575188.