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 0x601bb1cbadea2a95dc9b0d1a392a17b4a0b26dc12381901a3f134c5ef9ace195. 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/73447148-4fd3-417e-bb8a-dcd2a99764d9.json and https://artists.proofprofile.net/proofs/artist/73447148-4fd3-417e-bb8a-dcd2a99764d9.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 0x5643c8bca67ff2827606cff0c416d5e13efda8a0b4b18f4f7206858be4f20b58. 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/QZEKE1882828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd625a9c77db57b4351887261373f52861e08b8fc5e2c419f618e206f63c37f81. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZEKE1882830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f32fb664b70874eaa6d91fce9777291be3ee0a170b0fd608bf4d9b62646851. 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/QZEKE1882833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9281a4e17b7516e11f42a43cd0472ed46752ae4ff0d10096935d298cc9e33341. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZEKE1882834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24efcccf6c9cce66e7a99155e701ac16a1308c805ce407ed031da104f3638388. 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/QZF452004992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169e6af151041db5b7deac375a6cc34d1829871f5d76d11c22e3d4a5ad21ddb8. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZF452004998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55076bd41f45e3f4b0df92fee09b1037e3755450dc864fa514d58b77253cf3ba. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:40:53Z), 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/QZF452005001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae0ee3669ca61b96d1af7562cd8b87420e35c504e1ccc464f93e64e40a31f2c. 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/QZF452005002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ca15fddaa2788f5f63fcb90318ec94b6c7831bba22f214a2ce82aa38d0514d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZF452005004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0976c8b68e295049aa6fd8c8f4896ced1c51ee867344bde756668af11e408f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZF452005006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4a47b19bccf185fb89a7f1ea0126056bb531bdefc44019786175ef9f3ac257. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/KSA002100031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb7495ba1b9a85119f726c06e50d1efdca97978f75f5ab4deec4006334353e3. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:33:36Z), 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/KSA002100032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7afcaebf91a452b7306c2ddadb694495a29b99d09a958868ca948057853d8e51. 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/KSA002100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e28fcbcb5bdd9cfe2549a4f63dda40d8fc93712cd15d61d12cf7a74c5a5177. 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/KSA002100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6516dc4565e0837d50cbf9790bf109aeb63cc62aae7d21e9d06cde4580ad2c. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/KSA002100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4055d8cc6441b618fcebed6ba0dcf90dd4429fdde378c4331fac20364195d4. 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/KSA002101777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c20962f649ec510abc5c105d749b4dde2d6d5e197441b47883513319290733. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/KSA002101779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77906514ee343c04a75a30168160f9fdef65665f2fa63d5e9e1443f8a0d3e1ef. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/KSA002300737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39181e4232c75d79a280641753709727ac4f343b798bf4276afbaef3b8095364. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:49:42Z), 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/KSA002300741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2df47266ef6b561083858caa3258d5d0260ce450be94b00ff3caf52d63db34f. 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/KSA002302062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7660bfae552a3ef561f9b4ad71686d57133fd0061bf1bb194dcc79764be48f11. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/KSA002302063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43ce39b41e4f4eb31a8a8faf95a03a5387a838720e4aea3846dd6e13c38c6e8. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/KSA002401096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a1fbcfeb2c87c49a965554b222e5082090b95fa55a00b0b7fb14e8c57ee948. 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/KSA002401098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c506ee1aa237e8ee3259d3045b2dbc4f4a33439e0bd84e47ed9f9cafd4f594f. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:45:22Z), 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/KSA002401099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97250e9832a2be63f506118447adca015f34965e089a5ed6d07c3273424aa5b. 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/KSA002402176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96608121d33b4f654e41e185c9f5449dbe25df8574989bea8466c33995f15e56. 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/KSA002402178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d19ead157fd195d83bb694d8f1f3f4c58d26cb080393146182a0420dbd3775. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/KSA002402180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6377f3b93d993c50fbbbe738a63d5cf2f027a5cf7c56f1bf83a7f423ec1358f5. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/KSA002500576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc401159336b8dd0221b841e34b859c201d8c5b2213735ac7ec4ae699718c938. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/KSA002500577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca19efe34667268f330ea384d3cb4038023e333f444c6ca1f5477d9965731d7. 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/KSA002500578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4136526e97cdf88ddb4dddadf9674c835b0d69c12d501b1bcd5008f3c92bd1d6. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/KSA002500579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15068ed20d7b2ddebbe95484ec67fc72d8282425bbabf247ebf29826d1ae0583. 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/KSA002500580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7316981396999eff53c1d7a3b8b054afe9d1f80f68313fbca29894fc54d5a2. 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/KSA002500581.