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 0xfee4e65596186ae64aa0bdd709d5f59ea4e85dc75caf08942fbb640aa9c90ec1. 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/b3fff302-4f47-42de-b71c-159ed39e3d12.json and https://artists.proofprofile.net/proofs/artist/b3fff302-4f47-42de-b71c-159ed39e3d12.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 0xb0bce02c25291a42bcc21036633f2a78e741a3c07ddc61c24963b019fce40884. 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/FRP621218500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa805c83a82d18efc8713aa7c51032446470cd9b3bc96f80d208bb12bf00038. Chain 2 (Bitcoin): anchored in block 957810 (2026-07-13T05:55:46Z), 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/FRP621218520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded92e4c07edf5790994c8f8d1d040eaffb8c6b0f9b0185e7f042cee6d48625e. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FRP621218530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd93947a9f32031e924202b0265a30f58cbb2d2dc1d08ef150d30c2b4c656512c. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/FRP621218570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26341fe77864c698439fdc1797c842d643d2551e3d161ea42bc28ad6149868a0. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/FRP621474530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1968b0e755ad528efb8422026ad11feba0a00d6dd26570e40c936a3bf1a7c418. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FRP621474540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28b973e8e7ac0e2a612c4fe8abc150c32e854ad59e98e980e1f317d3ec16ab4. 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/FRP621474550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d551316dd0302e726d8b693a444d9e188105f50c3d61880120c9c5cb7c6c315. 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/FRP621474560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4529817737ba83ce281bd1b6734b34cf71c0460ab70e67ed69f18bf3098a219a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FRP621474590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe425fcb1de6d743ae8fb2d4a283d2adab2d766776ec6d9ffc0834028ec0a5bc5. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:42:55Z), 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/FR9W11910973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fbf2467b8176b5eb14db19e0666b3fb01d646ea0686a2a0f85c309aa328bfc0. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/FR9W11910976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe8517cc11808fca5449a3c8024b0c3198d1820f38f2f759905990550ba0c87. 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/FR9W11910977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a366269dea476fd1c5cd7f283a6965cccca17b9eef095d843534341d2cddce. 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/FR9W11910982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47822fe5203734ca8c4f8cddde9653df000d69e31198c6e7b69bb19d8b1a0d6e. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/FR9W11910983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609484e3de64c51b65564d55e575d07e60b001a5069ea2cfce6b7d1cf75372a6. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T21:01:53Z), 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/FR9W11910979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491063594a78b592a5d03158a6097ddb5d5dce1a74c3f0b3e7de634b0a766f89. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:56:37Z), 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/FR9W11910980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9095683f43fe1d98e984d98518123f88a3e7a97567f0c123bde52115d5d13109. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FR9W11910985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0ebcb94e5b71f06feeacfb013a45320a1e6c0d9037ee243770b1941e4a755d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:30:22Z), 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/FR9W11910986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72266edc038332ffbd7dc88e4b90812355573ceeb4b0ae00164bda675354a815. 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/FR9W12111264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8dd0618541fedef9b92a18d48113556fed9d0e2ddd5a8e07aa7f4ba0bb42e3. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:18:30Z), 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/FR9W12111265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e3af6552f420c7e739cc4f299743c9e4bd4a097b6061980af4cb0395eade33. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:11:03Z), 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/FR9W12111267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc13de930eb52d8e5618d1a630b20de52728f114b55d66801a165db454e8bee. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:56:14Z), 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/FR9W12333356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33e14967f9d02f3ec9c97e9678ef78df154c2f99d5c52ec03fd1c936c971961. Chain 2 (Bitcoin): anchored in block 957634 (2026-07-12T00:26:43Z), 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/FR9W12333357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8dc09a707dc158a560cca3ee2283a3b9d5ef3e02baa25c8312cbb85a06eb104. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FR9W12333358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf8f7edaca8ff44487407df449cf908446e9f9501ed6d1ad7f9b8f6ae5cfa3d. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FR9W12333360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba7712125514907c9d7d5da0756b579179e40223cf9b149171948ca51a6128a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR9W12333361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2290c3a9e8d4eb90ac1c5429c0d123be8215c1f2094ee64c554d2a97d9af54. 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/FR9W12333362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53026530f5a72405627485eca33ee92d27c19e177617bc7704026dee73c93080. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:20:57Z), 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/FR9W12333363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd86c8608aab708c09d99b2aac06e60122cf8480d101d0e6e547f6df3e41336. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR9W12333364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe962140ce3241638e09b314e9bd7a3dbee17dfa0e409b0c66464b1cae46f0d23. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:08:46Z), 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/FR9W12333366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54e76b67107efe6b9a84960545635c1da79c9e2c097d1f2503482dc98597866. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/FR9W12333368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf867501b3db4b63f37d8d6aeec8a1f0806360cd02f506219a45dfc47a2feecae. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FR9W12423834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ab52810c96821d36e012e604b1eeaea57cff13df2548950310520bc51e5609. 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/FR9W12429025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a65774c0c6f8f475312a568200af56a43c658bc003ff2ea18e9d6202e4ff22. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:58:38Z), 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/FR9W12440666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191b6577f99562d231855593d975ddccdf7b2fc618e107046aaaf4ad043fe327. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/FR9W12429026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f39baf7957f7e5cc355412404a98225501b86f94a4223534ea70b3a1110c28. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FR9W12440663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed478195b1f7cefd174a159a36e394b7eb740c0d3e3b88dc9e2094fe3cef7799. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:28:00Z), 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/FR9W12440664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54cae308a11a671757c229f1423bcb53235acca96b7b7dc840071ae09ca3ead7. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/FR9W12440665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35790df92b635ea4898d1a621628844a7bf2be4ffc25af53fe67cc1f3d8ee962. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FR9W12440667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb708b07f8c4aa8f35aa4c7a5f30bf366aa2b513232ee4da1575de05c5df2c148. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FR9W12440668.