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 0xed6d68a9c3177a746923c7e56e50bfb6f27ab7878d5bfdac9b099bf51a4f707b. Chain 2 (Bitcoin): anchored in block 953759 (2026-06-15T08:04:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b5b61eee-80cc-4e8e-8c9c-a17c49bfd6ec.json and https://artists.proofprofile.net/proofs/artist/b5b61eee-80cc-4e8e-8c9c-a17c49bfd6ec.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 0x830e4ef424e28ea9b6f08139e313a971f21faf4d9c93fb634b072927b6ac0662. 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/QZFZ42554759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b25c73aecd276a8237c09215d8ae7a1d34cf3c62eec625145248f7251aad1f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZFZ62551491.
Karmazynowa Wojowniczka (Akatsuki no Yona)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6316268a41abc9d192a2b20f058ff23471ec916b819f45d04fd917a872e7cf73. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:12:04Z), 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/QZDA72556755.
Kochaj i walcz (Kaguya-sama: Love is war)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0286666588dc0ff94b1155dbe428f6ebe1c8e354cc0e6ecab251265f200ec3. 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/QZES72572305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2698ecd1e9f0986e93138d450dc365654b95022f1bf9f6606ea24187b96e9496. 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/QZES92511041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d7090042fc257e3d0b784e2283b38b0c879e30c4d4f971cdd48279e0012b20. 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/QZHN62555199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cce90027c4087522133fba48c9acb35a837e2baa28c0a80adda900ae8966070. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZHN82525495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce66d5a687d9a4df915a0b242f3dce10b3306dc6e648c6aaab2932aa4a406461. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:22:36Z), 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/QZK6Q2507933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d6994aaa64a2d05eb478d28a252abb34a7aaa8f2a18f9559986bfe4d3802eb. 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/QZK6L2533208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf25e7951543da35d45d9a3c33f3b2a5eaf0a8758aa5f3866f98002ffdc1426e. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QZK6L2536525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c25e90d1bfccacaf47170ca31c8c067bbe9d7b4124933a96f62266413b4eb8. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/QZK6K2554457.
Ostatni oddech bohatera (My Hero Academia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67df20b3226af1258ebbb5a889555b12aedc82778fa7a6f1e23b54a83824d0f6. 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/QZMEP2529852.
Prawdziwy Bohater (Chillin' in another world)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1fd464ef6f833142880e9b570eb1aa70edd474731b08c4a56ff69276ef493a5. 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/QZNWW2526637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ef6e05c48b016325d5dfdc4b99b790faaf24040609475c290579373f6970aa. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZPLR2568170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59b45bec1d3cd5f6944cff40b6afc8f0b07888f2f178dcb98599308b1ae418d. 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/QZPLS2521578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfaaf5bd5c0b8a415f8d1c2ecba392fb9e498bdbb68f20a8504d4bc5af9dbd8a. 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/QZTAW2596374.
Przecinamy powietrze (Jak wytresować smoka)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8c318fb3f0400bdb76f6e1fe15710a2d5724a1c471154237aee3dfb6aa0a57. 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/QZTB52578613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2e8d5d06752dd628639c458da766ae6cd772a391cc78751ff0b7fb91627194. 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/QZTBB2558008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacfeae75aa02a4e56057b7dd941d2aeb0945637cdcf2ef85ab54df3e7922a81b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZWFE2509839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf16d9c9a13380ac485b28e9f3607799fa4e5aedd69e327dda317f7ec73a5bc. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZWFF2599209.
Nie zdaje sobie sprawy (Too-Perfect Saint)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3902c41bc2c11f0f398db990d2eab856deb0000a7480e763587bc956bd526c0c. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZWFN2518513.
Wrogowie..? (Magical Girl and Evil Lieutenant)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599abf9445580d1fd904bf6936d11a1a0d6a2e411845f6f8708c2e1e0f2aa921. 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/QZWFR2556721.
"Your Idol" Polish Cover (KPop Demon Hunters)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03606fb09ac22925132f7af8c3647c6154526466d66889de64611ac74fbebf8f. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QZWFW2599285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f7b5734f5aa95df47b55ca8c58e8769399a57cf30cd95b4cd37360f9a4524c. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:31:21Z), 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/QZZ7N2572883.
Nowe Kolory (The Fragrant Flower Blooms With Dignity)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d1b9cb34ef5d8dbd5b5d80c3e8eb4fa0ddfcb95dd5ec8cbfd06e3b5cb51932. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:23:39Z), 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/QZZ7R2500359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ccff048983f5f49fac9b7a7ccae1fb46647d29098c4caf0e4bf58fc26c622cd. 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/QZZ7Q2598297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825ddea7d96a97de1b4d68d355068e99eda529a58b395ba83dfe94ca6e9f15e6. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZZ7W2594534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3575de75b40e153e9ed49521fdf32086e451f57daaa93ac0e3465a0efca084. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QT3F92577494.
Ja i mój miecz (Wistoria: Wand and Sword)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020a8f844ddb681756fd93379ca558e8673751d8c78c7718db8d3de1677ffb5e. 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/QT3F92577493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd891bc3dbea4c69d0ac8d50155667c518e42f96e0b1d1609295cb5251eb8e337. 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/QT3FD2508107.