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 0x455dff267cf582d01f78e8f01f2ee675211c46f67ffd8a371487346e97b45713. 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/da0ea45f-4b1d-45b4-9fef-fb532a0b2ed3.json and https://artists.proofprofile.net/proofs/artist/da0ea45f-4b1d-45b4-9fef-fb532a0b2ed3.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 0x1e0130313f22120940eefe94b7d5086a229678a1022083725383c54a2d6fd8c5. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:23:38Z), 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/QMRTJ2200111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb218a76b8151918bd3022617a8fca726852e2da2d034642a62745b10bd7f46. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QMRTJ2200113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1a56b3a85643dde6a55d863730cad35512a2097171082f1b8257cb69782578. 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/QZNWY2214130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ad17ee2c4e43a20064496b871f4b10f5c707392c67c1aa1daabab0d5ce7415. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/QZES82337769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc2453a544d257e336649c8099aed697c06f9760e39cedf83e1df93c37f36eb. 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/QZFZ62321101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13689370aca4cf32bf99c8adc6efb170f64e79bf8b7e9df1e5e5044a7f255b8e. 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/QZES82337771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4193f3298e5bc2c54591eae0d1a2d1d928cb57705f5943ec6dc442f22d4fdc. 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/QZES82337772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0debf1778cd6588b3beaf278c1699cbbac701ec528fde80bdbd4ec7788519c16. 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/QZES82337775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a926c2d0ba4d5a34f567e11ecd07923a829f160168f90198ffc4bb30b90a21e. 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/QZES82337778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1ba46159ae3450b459d93182d42cf98fa1279fa2660ea3fab2708ca51e995a. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZES82337779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5b99b7b7a5214654ba216da8ad9e68ca5ada1ba0b80876e1f6addec5fbfd12. 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/QZES82337780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be31614ab5c767f742b909726a50856a3fd86b5c9632ea7b6c6bf2cf3792e41. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZMEQ2397390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5fa6a8b39712e3749dc61ae4d8b3e0418beeffae66a0a659973e570a5ad28cf. 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/QZMEQ2397394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27935caf112caa5e330420ead2f22056acab7b244f225fbdb9986b1f416ceb27. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:32:18Z), 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/QZMEQ2397395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154dd960667bcfc8e3bdd3a02b3ba9812aa7b6b1ccf977ea972a810e1c181b8a. 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/QZMEQ2397399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a89d40ed7eb689706622cf3000bf4039b79a1485a2aa2ea8091bfae638a6b2. 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/QZFYZ2444351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b1bedf04e77b0a2c63296c9a6b3cdb75e31e81f8f9eac814e877f3dbc32fc7. 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/QZDA72411965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307cff3c2041195a4d2a0d2f08354a053a0767002b95e5dab6d269b5ef5a6c27. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZDA72411966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c4d961b00f740f2067eb0386b9b13ad67af8550404f4cccf8238179518648c. 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/QZDA72411971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd6bdfbb4b16b22dcfe765c2ab83620bb8fa99288e339dfb22812b06d446764. 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/QZDA72411972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a23513cd44a6cc9f958608369dbe210f1272b5e048b93d5a6e765ae6ffc761. 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/QZNWX2455071.