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 0x0c56232bcbfe756f177f63143b31e5dde4eb39e180d51ac3dca30825c715fbd3. 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/7eb09f6f-2750-449e-bd7d-d8d1cf755723.json and https://artists.proofprofile.net/proofs/artist/7eb09f6f-2750-449e-bd7d-d8d1cf755723.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 0x48b20eff033fdf3126f27988ec9edb282c1e563143822fdc0f25f81335098fad. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBLFP2132583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdefb9343ea0ee9934837631df5cd07838c044456925bdf2750221378b6f7f462. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:48:08Z), 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/GX3Q92101238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c51d116753ff32f6e114c90619ec4ca8156fe418e76f1bc6d90440c3753388. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZHNA2251799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241c192f9e37a693b0f0d464c24dcc1a149210bc9353ce0d57efe7a467d63ef8. 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/GBAJC2200240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64a6f4374cbe9ec4012803bbc04098e35dea39b96764b05c7a8270851ae9f6e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBAJC2200243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ff43512eeba7b08d353f554b4622fd216d4a1b380c24469d9dcc1e182b350c. 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/GBAJC2200244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ff43512eeba7b08d353f554b4622fd216d4a1b380c24469d9dcc1e182b350c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBAJC2200244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf0e3cd462c751196e2335f16c88962f3bccc5eae7c98cfae9fe6294b5b76de. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/GBAJC2300150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c51d32251d8300c241d3908ebc16d259fc41b7982f88e75415b5c24b1b5d6d9. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:05:55Z), 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/GBAJC2300379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8cb033161c57c18a67573967f31e31b127d6b64fdb83e5004dcfa46867d259. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBAJC2400152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f20748b97013375d089181e0f9f406f2c811e8372aec4f924e11d3caa0e8b3. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:01:53Z), 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/GBAJC2400144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7468b405a2d38a93a89fc77708d1d33aabb28961d5b9e4b61647ac14ecadbfa. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBAJC2400149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007f99f150a66edd5b7094edd7d227e6dcbc969527fc909baa7a1bf3ce1fe558. 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/GBAJC2400143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007f99f150a66edd5b7094edd7d227e6dcbc969527fc909baa7a1bf3ce1fe558. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBAJC2400143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f11813392f26b98a24127e99980ad0ab81d3027a4c9ef5ac2f142d406bd689b. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/GBAJC2400142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007f99f150a66edd5b7094edd7d227e6dcbc969527fc909baa7a1bf3ce1fe558. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:52:25Z), 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/GBAJC2400143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f20748b97013375d089181e0f9f406f2c811e8372aec4f924e11d3caa0e8b3. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/GBAJC2400144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73311d6c3ed6bf00870ae2deda0a8a46d8bec19ba1e42fba5fe01e6536585db7. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GBAJC2400145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7468b405a2d38a93a89fc77708d1d33aabb28961d5b9e4b61647ac14ecadbfa. 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/GBAJC2400149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8cb033161c57c18a67573967f31e31b127d6b64fdb83e5004dcfa46867d259. 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/GBAJC2400152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc08e67c6001d73222ca141e2eecd0fdda2237e7a7a8559fd4161fe6cbfe8b86. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:07:39Z), 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/GBAJC2400146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ab7d41457f828d2aed352d707bcfe2c2e1dbed3881415cf19f89392b7d5c9b. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/GBAJC2400147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8520028bced3e86e2044756f6ce5ad8754927511e6747dc8452612b3f0f458. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/GBAJC2400148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d488c7537589cb3bf0bfa44f2df9b1a1c696ccfee7d5269f00205bf05f0113. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/GBAJC2400150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d76254130fffaffb2e7ca2e92275b8e2a5f12f10907efb7d8a4136855508aa. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GBAJC2400151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c740c1ee077354831a09ddf9964872e4d57fdcc294265e07d68b1248b9c778. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBAJC2400153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631232ad74bb7a64f7976ae68fa8ab11186f6d3c54d5c109f7fe236ad08da2f7. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:31:30Z), 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/GBAJC2500792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d196a17f6d38d84a4ce2d4ae228e63a54bcac2f0aa3d89a18b0f97559766ee. 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/QZHNC2233537.