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 0x08a0da12704d441b94140cf4ecb868fe1b4c6ed49f69889e6701de5abec59035. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/295686f5-3f69-42b9-b213-d0ca27951f59.json and https://artists.proofprofile.net/proofs/artist/295686f5-3f69-42b9-b213-d0ca27951f59.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 0x62a4fadabb5ebe902bc1ce79690db2dacc01e1c7f9653fbd5cefc90ab3f116ef. 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/QM4TX1508448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf45ef50e9c3b3bb030e15af9f7794e57fb9342efdc39359233943a420f2c45. 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/QM4TX1508449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f34b576b1e816dfcb2bb4510b1db4c3393f35425d817862399a094bc53da151. 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/QM4TX1508450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ebf631088c65127470738ceb14842231747285012401f42e72a458f2eec2433. 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/QM4TX1508452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb74b92ebec1a8b0764796ab2b478100d91c909d45a32513a2e9884e6da3898b. 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/QM4TX1508454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707175dbf9f1ec650494af04745c62e3762d07e8782926e2a8eea4bbb498fbb4. 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/QM4TX1508455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac01a7dcbe4263798ef00cdfef95283b37ee321c64c54045f8122505cb25c468. 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/QMBZ91350270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3358516f4abe693ca12664386d0b2887a50610193514a25033ae44b8ef4c9e57. 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/QMBZ91350273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e98b6f9c8097669ed0302ec92aff960da5ecafd5a8b8db1778475de6b95fb4. 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/QMBZ91350274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34403e25629d8ae8e38385a91cb4d2d8052fe0787dc0c7e0db317bf680eb73be. 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/QMBZ91350277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde31ac993c6b6e70703d4eee4d1627d735d92ddaa95e70a7b7f426e6c2a281c2. 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/GBMA22068416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3ae5febf0ce3bda69cbed1024dc42661ce1fd708ec7784770b264e4268cc6b. 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/QM4TX1941633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9007c60cc93c1dcc92d0ce9e8196fd895a0a11e70b93ca2e3646325f46a756a2. 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/QM4TW1836727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b285239ba1f9a8c184ab4fdc2d06bc5053a94f8e386f5a1718a4a5c00fe6c79. 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/GBMA22088968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa097474e79974950093c269eb233f8a016e05b68442e69182fb7c9cde404ebca. 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/GBLFP2018251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf150c3042971b2732419fc23fc0d4dece902681255ec94b90a63f5d943341e3. 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/GBLFP2018276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2647b5e3db574c65b3bc4d6f59486a70758512fbc4d0948df799cf0ecf2828e4. 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/QM6MZ1988922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b902dc06fbf614cb9ec70f763b27c088e66373bf332be244bba933729bf5a1. 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/QM6P41961717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde31ac993c6b6e70703d4eee4d1627d735d92ddaa95e70a7b7f426e6c2a281c2. 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/GBMA22068416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff7ed63d796e14e30a0a6b2e460a588259fe5f2683fea3a3a1cbe8e2cf68f4f. 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/GBLFP2018393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623a21edc44a8f445b05deb1024a1d7598e7123e72f4e182054b614c4aabf5b0. 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/ESA081700879.