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 0xafcbad399afebe3886d23642bb2b165f82e03994ab4430408ae5f65a9cb4c773. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/335b234b-e982-4ec0-b603-d557e02800a2.json and https://artists.proofprofile.net/proofs/artist/335b234b-e982-4ec0-b603-d557e02800a2.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 0x15a86fa951fc9aab1217932b3f83f31d1b09b5726196e7a34d44da5b00be7de3. 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/IL6721700704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5594dc006ee7aafd6b9b989e095597f21847c5fcc492efd98bf04d3f872f748c. 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/IL6721700705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3331b37f7ee236ff53cc686d2d57a7135446eb4f52a34b8e981e4b40f90e1e. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/IL6721700379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57c3629c01bdf1a91f14870551824cd41d8e30ab6e9a79ccda1a6952fa72726. 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/IL6721700380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6567ddff07ba84744d8296d7f733527085d3e26c144754cce266b324e7724414. 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/IL6721700381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad867c77204fcc442201c00ac7fb4f09d6f561f748aa4c72ea3564146dcee712. 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/IL6721700382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6986bc5c6a52665911eb246198acdc4fa792a58bb0910fa2cb11016c00b5317f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/IL6721700384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc5da1f9d2ffc9fbbb19471c82f7fd4b4b282705248e900798ce6057daa4c56. 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/IL6721700387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295c9354389a787b776f7e5f58bd1f8baa5f0ee34f875097238bd3613ce4c8b1. 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/IL6721700483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6180da692ec868ae7a6d5dd39e29c0be559c85c4a72516d36b4ebf8b7cd851a8. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/IL6721700485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa9e9bb6953000be26bb32ae83603812eaba262a0deb12abc276d1cc4764781. 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/IL6721700486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295c9354389a787b776f7e5f58bd1f8baa5f0ee34f875097238bd3613ce4c8b1. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/IL6721700483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6180da692ec868ae7a6d5dd39e29c0be559c85c4a72516d36b4ebf8b7cd851a8. 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/IL6721700485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa642d11e9f6fb6affa630c4514d5eea27adeb323038b1c9a6cb22b52d4f513ac. 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/IL6721700484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ceecf9b7b9da536c20d6cdd784ff4bdbd64e51e91d705722f1fa8056b02c93a. 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/IL6721700406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07357d50304c5ba2233510c9d29d51d5ab007e919d2c9bad18ef314054ea14fa. 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/IL6721700687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd540bcb73b631809818b5733cf91ae7da9dae7831206375ac612114abcc250. 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/IL6721700413.