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 0x23d57155f26bc527b762ed5d42b62dba3b9f7d06bd6a4ca4868c2c81f89bd210. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a9afa771-6fa9-4303-a6e0-de077a8fa650.json and https://artists.proofprofile.net/proofs/artist/a9afa771-6fa9-4303-a6e0-de077a8fa650.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 0xe4073058e52bde91eb03ef766d2459a144bbacd69a4174d70512d669d1524391. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FIHL22400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb75031997472e79bc91754bb06e97949ee8f01bce31dcba6bc767465d33fd460. 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/FIHL22400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157891597caf4e2828dbe764c8a32b795bf09109c3512589d11ca0eedf3d1250. 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/FIHL22400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b2548d4e091e8e686b6446f50bbd6cf457b8fca49edb56e31f19725b0c895f. 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/FIHL22400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1774ae0b4c9800f652f69c7e5e2f787ea8bea0ba42e681b637aa41ae265c0d. 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/FIHL22300108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52bcb6b3c5c677966ede390f3b6dde1a6fe41babddce30c8919aa6fd1f5145c2. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FIHL22400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef756fefa2d9bbdf9cb3b693e5686504f93727c4d328da98524c3deb4b4df92. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FIHL22200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0593d53e17d60f693a0f8fa98700fe855d78a9097058018a37a7bcc37cb2853. 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/FIHL22100056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881be5387c06366cfb1469e47a6d5a2923061a872d7bbef4108ca9955db9ec50. 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/FIHL22100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f04f131d766ff279d866ca03f7e2988540aa0cac99499112ec9520a19ca72ca. 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/FIHL22200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb3c8de2e544901031126b57843a1a5e4bd4deb751af9b2d86562d42959b93a1. 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/FIHL22200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23d9cba37126142bc03a86604e264387826c97c2ef580d30562aaeb6beaa1fa. 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/FIHL22200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40680e8077eb7fe1223062611fd177ebd4eef64423eeaa014a0e5431659f41db. 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/FIHL21900022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03390a4b758ed219d126190984083901a9f17ee6b2a5b27ec75c2f5b96a35bca. 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/FIHL22000037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7618ef252269453ef029079ab66aaf4d2940de898c139c82fc486c293863cb6. 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/FIHL22000040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa2b308d5efb86b62bb7025769374404b7af16030d42508a2d708cb1d2fe1d8. 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/FIHL22000041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5adebb2101ea4ba7f0553c82d550e6d7acc065c5dbf8ef8c4a0f8b1bcb36b1b. 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/FIHL22000043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2889a35949518c30929a2e1322afb046225a1464bc3d24eb858e299ebea6dba5. 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/FIHL21900045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52bcb6b3c5c677966ede390f3b6dde1a6fe41babddce30c8919aa6fd1f5145c2. 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/FIHL22400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1774ae0b4c9800f652f69c7e5e2f787ea8bea0ba42e681b637aa41ae265c0d. 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/FIHL22300108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d895f54f12c0df33f7beddcf445a9cdd324f98d091bc67e9ed46fcf52c3064f. 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/FIHL22300075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c283db946c8e0680f0ac23a329864fa1a11657290ea92a34d31e239d7af9cdd. 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/FIHL22300074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f04f131d766ff279d866ca03f7e2988540aa0cac99499112ec9520a19ca72ca. 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/FIHL22200011.