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 0x035b06473664a021360987f0ff18a367da6ae4b065857ea2d34a7f99ad7be630. 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/df5e865d-0531-47e5-8142-5d32bc2fcab2.json and https://artists.proofprofile.net/proofs/artist/df5e865d-0531-47e5-8142-5d32bc2fcab2.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 0xda338956579c75d0303c7949ab5611244f7c2626db1db918b1ba91d443527a7e. 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/JPPI01050560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2a66d1fda3d9096d7926eed38373551756bf2df7e7ba3efac137552f093da7. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPPI00550320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4f6e09993bad22dbd2084489e41a759c46331a97674eb545c7308b5dc5cc0c. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPPI00550310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4f6e09993bad22dbd2084489e41a759c46331a97674eb545c7308b5dc5cc0c. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/JPPI00550310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8885a209b29900961cd2b128e6f78875248d67f3079667568a557e4a593282d7. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:40:38Z), 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/JPPI00651400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4f6e09993bad22dbd2084489e41a759c46331a97674eb545c7308b5dc5cc0c. 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/JPPI00550310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8fa3daab22794b8d56797059579e1751eb8e94d830ab3fc52bc18b4730fa9e. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/JPPI00761940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93155bdbfd8eb942d0188eb4299ec76af047fffc1858c44f7991b579f7fbca4b. 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/JPPI00751380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b38991431957d18f704d3fd3078ce3875a01a949b0fa9ab81253728ab9e9e36. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/JPPI00854960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b38991431957d18f704d3fd3078ce3875a01a949b0fa9ab81253728ab9e9e36. 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/JPPI00854960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56758e180904a99609e389f0d96afe68f3263ccf48153772faea04a12f44cd73. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:23:11Z), 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/JPPI00757400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa67f43747f0422a9dfc8087c5b8004c2598da32859bf6926a71f251da81dee2. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:58:37Z), 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/JPPI00855010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd850e401abdbfe5b8346ba734f11d000683d4b33b0f33413173d7bbe1ca113c5. 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/JPPI00963690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda338956579c75d0303c7949ab5611244f7c2626db1db918b1ba91d443527a7e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPPI01050560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51bc7f7e1eb5c7b1f43b72e98b7126f5772219b842f300ded9a0a0b20ae1b19c. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:32:51Z), 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/JPZ921201985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1147dcaac1d108b4c08ae424491142619a6e6ffd43e628ee5b90a9bd90d1cbd0. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/JPPI01350080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107ec211850ad034683c2ceb2562c1c21149b64eb38742ac26dd32f522fce505. 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/JPPI00861370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf440063aa602d6f120d50357cd2442e67a01514607c6fad08bba47ab03ee734f. 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/JPPI00950000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21340279823c7f5bc9d544931fcd24136e6744caac303c9bda3e0ea06cda228c. 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/JPPI01150060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed1354612747aa661a635ac89133fbf6d5ef14a0072503bbcfd3cf70283ecac. 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/JPPI00861380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f835456a75f76b44599997e56caf6a5dd41fd40e01c8fb100226eb529e6930d. 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/JPPI00950010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4413680f8a2ee5a63fd0eebad350c06fa29f14675f72815b4d179cc01666df77. 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/JPPI00861390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3062d0e2f1cf175fd64045318d3c5bf87612f9f5459a49845780ccd59bcbad9. 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/JPPI00951350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0888eaf1e0a5dc13f6da899973d7f59a2218a72ec5c5f42802be29393646c5. 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/JPPI01054230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c83c303fdf6bf5807b18d941a9853d1ee6295508633458940afcea52f05ae43. 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/JPPI01150080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183da1893e2af204ce811f6df14446183fdebc835fc6a1c55229296967bf6343. 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/JPPI01354110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdebc2bbecf4bcbb5765cfb262cf7eeca3cdd212daa0fdfbf1f0eee6da7614c92. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JPPI00950002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f835456a75f76b44599997e56caf6a5dd41fd40e01c8fb100226eb529e6930d. 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/JPPI00950010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107ec211850ad034683c2ceb2562c1c21149b64eb38742ac26dd32f522fce505. 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/JPPI00861370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf440063aa602d6f120d50357cd2442e67a01514607c6fad08bba47ab03ee734f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPPI00950000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59075220b92f69bdf2d57c850511fc62d5c9a4d6ed532e2bfe7e8ad3025f8b8. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:43:43Z), 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/JPPI01054220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21340279823c7f5bc9d544931fcd24136e6744caac303c9bda3e0ea06cda228c. 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/JPPI01150060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca8376b537dc2cacac7c3bd1b34f14aaa7ccde3262a470e6416fa44badbad12. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T19:54:24Z), 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/JPPI01500570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746afe0f650720371c41a7ed6fbf3ce28286f0c0087c34a9c591ab4e84844009. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/JPPI01500580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f95cf9e4a5a1acd0e8a2da2655777c61c0e762e701ceadcb574b0d8a29957c. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T08:50:42Z), 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/JPPI01500780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd036ddfec5a038e460b32a9088c5092cc5ba6b07ba3bc3b9c00948a1c3077710. 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/JPPI01356440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd036ddfec5a038e460b32a9088c5092cc5ba6b07ba3bc3b9c00948a1c3077710. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPPI01356440.
[A Certain Magical Index]Original SOUND Track (2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7200c2c0c5a9722e5bf8fe484a1c0af5f74aaddaae9c6ce59020d41a734deefb. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/JPPI00950001.
[A Certain Magical Index]Original SOUND Track1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0618268d70895edb68490afab9f923cbc55b22ab368ac0ae203fb4636173a65f. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPPI00861371.