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 0x0274706e991a6f100d35f63f4aa9672a42508aa433df8f61a82e83f7b7736fe2. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/549e3823-1364-4655-ae86-fd3f4daadff9.json and https://artists.proofprofile.net/proofs/artist/549e3823-1364-4655-ae86-fd3f4daadff9.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 0x23efe23a180bb18cda77d44e87a0c4acf9a8d831e9ce20931b9af7dd12251758. 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/USTDP2000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7308cb4aec8490bd802214077839281dab897481b3d8d11e3239e3397db1f8e1. 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/USTDP2000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa604ebf539dfa9649c665fb31c2e19a4c0ece39c25ad0b5e82d3463af1d968. 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/USTDP2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1442adf0931363b5817a0f14eea63260dcf88cb7fa43e8b5d916ae5f8150a94. 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/USTDP2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658fc856d60b88d48d1ab302f4d636f6a7ee93ba8b95edb273c2993824d6d85c. 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/USTDP2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5404dae4e3538288c37f5c828e3b19426e9260d65e12a02e78a4847ef3515c97. 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/USTDP2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaec0a9dedbb879b642a45fe711d7e096e33406e462ee1ba4ba283bd8417be4b. 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/USTDP1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8fa3a502b5bd490fda9b22f46d500a1b4607fc29fdf1cca28f25a27b559666. 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/USTDP1600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0764e947e06f677e758049105f217eed91e5bc95dc6f29cfe94ff41f17f5fdee. 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/USTDP1200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05993d118a95070e0db1eb056fa2a16419c4bb4146f4ec404fddcca4ad6c1d2b. 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/USTDP1300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cdf2f9e1275d3db07f1db608440a9d2450e12316875910173f6362d6dedcb69. 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/USTDP1200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb307ff6287762c5b16b0eed2cf12b23340264bf974314c2f69221405f07e9fe. 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/USTDP1200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8d583cd57900f459d5980eca3c82f4c3ff7ed287e8203b52f800a55cdf56f7. 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/USTDP1200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ee00c7ae658dad660453b25998be8f57bf445f5bb052ebe5ab01b4b0aa8db1. 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/USTDP1100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6284bc1efab37fb618246b1ddb9834e2e99527f9140f38b4656fb4a2d546d6ee. 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/USTDP1000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a250ce532ca5f3ab068fc85f52029e428244d7cb255473d1f67a6f55564c80. 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/USTDP1000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89cbc9ec8b6046d970bef7749434af62079c639932f64029389f07b9357f049a. 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/USTDP1000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc42970e47f902a9b87908672f1691f5e49d728a9fc57fb25d95d0d86889976. 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/USTDP1000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9366f47b4cfed5a4d889f16bfe57687be14cebb2f01ac9e855b9020771a0c4. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USTDP1000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643e2929d12a3268c7c7f6323ae4cf021f23cb131f446b4144c2c23b3df39895. 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/USDHM0902890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ad3cbcdf5c0fbce9595e7fc430ab2678a54f000fb1c94f0d2d73f01ed7e313. 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/USDHM0902894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e289079c7d4141722cee85613b6e8b5d067cf9c815974e1d65bc136aee206b. 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/USTDP2000048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a0e73a767317bf1c62111c5e7cae4ebf6f199513c779e847dede238c54d2ba. 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/USTDP2000050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa4a329211bff6838a50c5cfb9b8bd6105f704ebea24bc85aaa6e1edc5c9d53. 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/USTDP2000052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6c87c50fd021587e7c487bb8f13d937f1703b09d60b536cda2973db3cf5eef. 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/USTDP2000045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa604ebf539dfa9649c665fb31c2e19a4c0ece39c25ad0b5e82d3463af1d968. 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/USTDP2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e51081c07cfcc6f29717adc3abaac78e971519ca426ffaefa886e01b2e31fb. 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/US6QR1600062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7ce5846cbdae803b804995cfc534b2ad74f966941e09842277574fbd5911ef. 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/US6QR1600064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf997eed16d4fe4843cb5e74c6395e884ba027593abb5cadc0ec4787035bcec92. 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/US6QR1700058.