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 0x4caedb2510f59517fb8e51cc47fdd15d53895bd61c2c670844ffc56079cf1290. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/585fccc8-df23-4874-afac-21f92838e96c.json and https://artists.proofprofile.net/proofs/artist/585fccc8-df23-4874-afac-21f92838e96c.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 0xf4909942a3a2948618d431e2f6968c9944375a12433f09ff9a8941822bd24f47. 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/USA2P1920935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ebb110c183cc1e4f0f53819407bae9b948cbf4c83aad723c6900d593eec0299. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USA2P1920936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee52ec6011b56720328c18fd2248532f40cd08cee6d46f765db1b3064397421. 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/USA2P1920937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb995454138c883ffbf6fd327461d284df5dfed21d71c9646c9e77476655a32c. 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/USA2P1920938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5fffd4a1fbaf5b08d9c3f48b0448fe908ebfa035be1461dac1401425640c3ba. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:23:44Z), 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/USA2P1920943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f5327d8cc2cce86a8213dfa906e406e1e062f375df6f3bc7c31dbafd933221. 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/USA2P1920944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb89ac5f809e6ceb4689fb0768cfb322fa38622d4d694c0c5aff20f98e1ba7607. 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/USA2P1920925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6127b0e25404637ad95e5c2f306dbc07a0ac1742e9355bdcc6e055c97639bb. 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/USA2P1920926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0dc127e2fe1b4248ae7ce2117f927e72375884df23ba23b68611d5743302d4d. 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/USA2P1920927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9da46a4fc4c638f9c3a26ece04efba43a6e6d9fb9da41034a720deb8e6a0c18. 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/USA2P1920930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c83dce6c1dd1fa4f6cc58c3da8c15859b93844e9b284d375e101caa6c1627d. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USA2P1920933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06648fdfe4607da06ba7022731537cfe5ad00d14f8ce41eac16f1a26f0b1c2b5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USA2P1920932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56bc2656ef260c1fe701af03f7ab99203a390e83210831416c23290a31f7e98f. 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/USA2P1920934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1ac9169f6a00cd7e402523e54be29c4e37aec47123efd2b28f6562cd5b0692. 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/SGB502326095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246bd265586775973f8976139420ff38175622daf0e844089bf1924e85c06839. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USA2P1920958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa2c1cff26e4fbd87337acfb51c34379060d8e9086f29221c5a5c9a68c342709. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USA2P1920956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3ad6fb4fcdf4d70bd331d70641f2632950dee668b6b0e8bbed9faf836052e8. 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/GXD7V2589294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b246b4a90bd3fbf0ba12e1754e080eab6484079417352a64358860a62dd91e. 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/GXBAV2511667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f30fa03fe8994761bf0b78ece9b0067327f051b6ae586d05d36878f83aa9d3. 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/GXD7V2592080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfecb39138405d5fa3d070b0f593ad002fe15ecd7a0f1ae52e1093092aa995d29. 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/GXD7V2579409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b15a95ceb9e5c91aa4b6d05c1f83be303c02825f0b3809d08ec6e95ac53493e. 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/GXD7V2529520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751bb00d24eb996581a5789cc3b4cd4f1a0bfacf6e7a47286bbbf42f22ae2e9a. 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/GXD7V2599190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbbe8d188acbc57120ba0404fef7fc3093c9ab2fd6d54984303c297399f975cf. 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/GXD7V2570814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27519f6aaa76dc6be70a868d08dfd2527d84e04a96ef68d56ac50f1573f982ea. 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/GXD7V2530008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b246b4a90bd3fbf0ba12e1754e080eab6484079417352a64358860a62dd91e. 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/GXBAV2511667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1544a2e41c9e488cda2a1540e69b6dbcf769259d910f1070a09204f81492676. 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/TCAGS2224370.