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 0x463bc266c9375590ec97742927f1e6ffecf68b47816548968e5afb77d1fd2007. 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/8914c4be-c8f4-4d0f-b212-c8d4943b2690.json and https://artists.proofprofile.net/proofs/artist/8914c4be-c8f4-4d0f-b212-c8d4943b2690.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 0xe793e563bd80441dddffce71ce32a2eb1d45a485b4101c896841b4b9af1221b4. 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/QZK6F2132334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b347d85faadbacea6c0c3e7fa885f4c02c49a5f3710a4a6e57e5318e78d03bd. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:23:18Z), 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/AEA2M2224108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c99a7048a81fe6bbe3803c60dbca8967f65f1bb4f55fa3493562150a76a0fe. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZHZ52216287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd8b85874919d93416984c6494d0c7ce460e886a0704ef789de8f4903871cd6. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZDA62325157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710bc557e77a3bf9e437cd8b709ffde1d2f90318a268f7df986383c181f88975. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:19:24Z), 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/QZDA72372339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0184084050392e634978dffa86156618c51bb53b63260f104aa82b512d262b8. 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/QZDA72372058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e024e5881c34064d3e8ef57694f328fa2987197334e98763c1ed034c638e7d. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZK6K2334609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda85389b49e7cdf77d679361cb444b659700b14f26f9d42b7b9c5c6459a5247c. 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/QZTAT2332020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd949739665eaecd84d54ae04090439d81d7d07d09de2ceb7f9219978113874d6. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZTAT2332021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5acad947c73ffaf4e40b3e9bfcf250bfcba5ecd89aa6fd1dbd21152dde47374d. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZTAT2332024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x696758eb72266a75bac18a40b68273a097137842b7bbf87d89137951b73a6495. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZTAT2332027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6ae77bec513d624973007db99dd5764a2a0eb4c3f7b6021d0a0b06bd188c01. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZWFK2391628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8899fb97e0111c57f1a0e8c8754c94aef203842a90d62c3c36f00def66b0efc1. 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/QZWFP2331722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32eabdca5d8f20d8e46960cebf9f78f55cfc73cf0291bfe794ee8e739080730. 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/QZWFP2331723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee47eadf0a7b36b5b9dcf0e86be992f398fcb5f7e408dffb640d4518c9fc5c86. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZWFP2331725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1522198df8b8be9cd1b21390ac4d7b39299ff070270f77aeeb2b11e9e4da84bc. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:33:11Z), 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/QZFZ32405614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4f4cb83315f9b848d2d94fe3036b76edac47c53ca6a8e82122b116f9922940. 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/QZMEP2485036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f01de62f8f471017af9e2f5cb3b7159c5629ba2f5821499f7caaa7fd8f128a5. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZMEP2485037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b8e0b1641b9154c1c71aaad622b600cdacf85bc13309751e8d6289c6ffd01a. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZWFG2460143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d4574911faebdadbb5bc1b7f85119ae8941775620032402281b36a061b5452. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZTAS2565478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3bb12afb76215c82e471c3394809c76ad82b571d2c96e4331474f4820e34ac0. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QZTBD2552732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3f432bcd0d96e5e601e3f55885a2b3134d30cb98094d721ec4004e26ea2cfa. 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/QZZ7T2577944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ec324eb07d2e2e6b3ee1f259547849146adce308711a2b3eb49cf892bc47a0. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:15:49Z), 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/QZZ7T2577946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb29e9f6abdf84efe8a898821cac20c7c59b7be5a15c78ac88ed3ae86edc5c8f. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QT3F42551711.