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 0x30996595b923d0b5424bdf2b0be157c92e3e34ca703043a3ef525192c57e293d. 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/9d3e6038-9925-41fb-9338-5e47a66aa97f.json and https://artists.proofprofile.net/proofs/artist/9d3e6038-9925-41fb-9338-5e47a66aa97f.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 0xda823792ebeed0bada25f95c13d2298fdbd42645af7e838a89a3b321415ad7d5. Chain 2 (Bitcoin): anchored in block 959011 (2026-07-21T16:06:39Z), 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/GBKQU1202324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c312dabdef36a06053968f40450ae54db6ca23f834ee4cffec3a798bae08538. 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/GBKQU1202325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362b1ddc602cf376a11ec96cbfa3113169b8208643f09cf5f610762e179a8247. 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/TCABL1385116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71724677f23e1126ccffbdc39befd6b4de8d09385c39bb70d54cdd3617c6cdf0. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/TCABL1385120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf953f4f8a904c31555cddf2742ddd3ea3726a09057dd519c5c1128f50eba59ee. 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/TCABP1305482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a0bb83109d05092fb11a8eb644499d17080430214011d3e82ef55ffac198ff. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCABP1305486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9bcc5e30fd68f48c4fef213ecded25a575cf7de7a8487bb5d9d031ca87502b. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:00:28Z), 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/DEBY71157593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc86c4ea53cf8065251abd3d8c275657c3062c179c7781057de4b3c6e7cba6fa. 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/TCABY1420159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b38e0d38516dcacec538862b126139cb6ea46e231426df549606397feba624e. 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/TCACC1460240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722374088acb445e58b2ab07ff70a0bd82adafad8be548dc97dc6ad146b64796. 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/TCACD1587034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0a68c839723e71c65eb8c91174f057ab8dfda927baa30975d4ad36c14df276. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:03:25Z), 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/TCACD1587035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868aa638f50a6e8287ca0c5cb22c632b6ebe1166ffc33fe4f8cff88574b55383. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:41:09Z), 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/TCACD1587037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0490cc96620b6265030d82bcc311d644bbaa3eff554a6785a8a348fd6479ac7c. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TCACL1641739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7951bf3b08c18f43b4f438d2caa26d30ecc7e71cbe9f1686330681f3b7731b7f. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:27:12Z), 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/TCACL1641742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217b1f94f19cf107c3af80f7a3f109c19763327bc7cc55f8dd261ed8734c5d6d. 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/TCACL1641743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16bee28ab59481890938096715d734feb2427b87000e1c3f2953ee5526eaedcc. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:31:20Z), 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/TCACL1641748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65c937b451574882c9ca9ec2a076436a25b893950c1a407d3e049d9e1ef009e. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/TCACL1641749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ab26df3573cfdcefd2cc11defd0a7150efc38d5c4e24eeaab613dc89d9d1ec. 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/TCACN1654536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e3b55e5bdeeaf57e4f76f49ddcab1c4e4d8282124cb90dec017265871066cc. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QM2PV1639253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35590ba71c3872f11e17a3ff0abc26ab838085ca89701345c24782645aed2cd. 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/QM2PV1639255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25286b7c9efc240df100b40326a502635c81bb0551d07c34ebe8812e634e3c0. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:20:54Z), 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/QZK6P2202333.
Democracy Made Manifest (Helldivers Assemble!)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfece28d88fc052dd4e0a4a920e0f2e52296293c42145abaa9cc965330fb9e335. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USCGH1672706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74436074b7b0fbae0e8b1392e7807f04c105627e26fff6ed66e7311272a17315. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USCGH1737872.
Momentum Mori (Necrodancer Fight 1st Phase Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f93609f570b84556f769d4a079317bc2359da7424921dd126f12ec4c1a996c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USCGH1737874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3891645614495b6a9cf216788c055f0324c90d6be5004a455989b0b2e787438f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USCGH1737878.
Last Dance (Necrodancer Fight Phase 2 Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e1fc1ee928333603b74d9f12af47dd5e0bba31dd439e80f71232871406c1cd. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:10:07Z), 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/USCGH1737875.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Club Ocarina: An EDM Tribute to The Legend of Zelda
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe188bf538d1f3f0b6f3bbf6fb6472e24b8753bb5410dabb6d1aaab6250d46e36. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QZ6K41901088.