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 0xe21c55c2bfc18ec88d9a304606533ffea6a93ef24d1db2102ad579c50c065bf2. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4da7eec7-dfcc-413f-8820-70f40b20524f.json and https://artists.proofprofile.net/proofs/artist/4da7eec7-dfcc-413f-8820-70f40b20524f.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 0x821138f890e6874338c82e79556c5b8d676b8c2dcc564ff86aeebaf869e24f68. 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/FRDX62204870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27c6b1962e29299436f285370849be4bb0c4c53ea50931cc0405c6e80f9c47e. 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/FRDX62204890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe66b1bd1c147e98a7c4f6a354f7485f5c4d41223a00a5fdef5cd759dcd7105. 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/FRDX62402250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ca5e73d4868b092c8ccafa3780b827e69baf68be4b7f717844a8c8e472d4db. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRDX62404140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x053f9f90cabb4311c94b02bdb7605d08cc599f7cd13123b7f950ef2d37a85558. 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/FRDX62210030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbfa8fd32d927c979732f25bf7bc2ea4c465cf472175cf4ca099c4054e45ca9. 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/FRDX62403410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cca7850a3e658684bbb858f30f7090387667098999a58a56943f49a348dae1f. 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/FRDX62302810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd988c9b0fd9a697703c39756f2c678ed9aeac0495afc6d6e3364d8f6f5d379. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/FRDX62404160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbfa8fd32d927c979732f25bf7bc2ea4c465cf472175cf4ca099c4054e45ca9. 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/FRDX62403410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe66b1bd1c147e98a7c4f6a354f7485f5c4d41223a00a5fdef5cd759dcd7105. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRDX62402250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cca7850a3e658684bbb858f30f7090387667098999a58a56943f49a348dae1f. 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/FRDX62302810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x053f9f90cabb4311c94b02bdb7605d08cc599f7cd13123b7f950ef2d37a85558. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FRDX62210030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80cbb52c35420b07ad666b23ecf13882f84db4a4089bf9866ae07f295abaa8cd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRDX62210040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821138f890e6874338c82e79556c5b8d676b8c2dcc564ff86aeebaf869e24f68. 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/FRDX62204870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5595a2f4848de02572d22cf139e4aba2cef222df9cdb775d2e4340b4cce19b. 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/FRDX62204880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27c6b1962e29299436f285370849be4bb0c4c53ea50931cc0405c6e80f9c47e. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/FRDX62204890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e53f50375a2ee61b2782a68ef973f18710bade2d1d6834b6491e711e2c3f66. 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/FRDX62204900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f6c0094933ba2f45e8b33d9098230d1b650d743acd50a104804a2bf2497923. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FRDX62204910.