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 0xca5ba2e2ecb48000b046dfc7d7ff9d67a9aabcddb8f27a76ea90f5dbadcce497. 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/f07a31e9-cb49-4c7b-b569-41c5be62a1cd.json and https://artists.proofprofile.net/proofs/artist/f07a31e9-cb49-4c7b-b569-41c5be62a1cd.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 0x74930de39b1d90c257425813793d1c446230525203532c285cd75e4d9337ed16. 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/QZFYX2157808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c425be456cda6bf3388550a0364a488f16046deb28f1df1c4946610c27bd5a1. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZFYY2155660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ffc8f0f82edf0e9d1072eb9f998474f84d31aaea27f6be4e571e4483ac781c. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZFYY2155661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f6dd8a20e4ea4d832a8ab27faf332f519312b3a4f1e0ea9623e94163cb8630. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:28:04Z), 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/QZFYY2303892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e60f0cc600aad6f2acc9f69c24c248ff51012a0fe72d8f02ade2323ea1bb489. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZDA42399233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba5e1e64e79e0fd1bb2560f3ed27686bcfae92ec06e99c9f2c6d15bbf2f6b99. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:45:07Z), 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/QZDA42399235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06fd4a3c0058bc13fbf9aafd395b0bd2edc762c41dbe7d7f59dab576071a405. 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/QZDA42399238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5c5ebe21f0f3fb4ff30cfa35d4e461090911f7e4871924db0ed2b6868050ed. 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/QZFZ32428694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b780d8039ff112ab21344a12439f0e38ccbfe05322de4215d1effe15796c34. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZWFN2326410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8189e27b76eda732d052f0cc55f747433bb4a0f9d636f9027aa055e983a6e77. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZWFN2326411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4bd0fc78c1a66e895cf42b9f39eb8ad26aeadc7c6687398f7fa23dcea0331fa. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:24:29Z), 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/QZFZ32428695.
Four Seasons (Avatar the Last Airbender LoFi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ef1467e4aa2c025dc7b6e2ba2cdafb7fde78621331b796b8dfcf7111a66264. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:43:37Z), 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/QZDA52480304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54752fb232ed0491e3f96a9096cadc7cf3561cde34bb8f556e222d7742da36d1. 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/QZDA52480305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34216d05b2a32f1c2e740f7a8ae865ae7cc99bd950037230136f955c56d5d09a. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZES62428339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4dc1517ffff06ec2a641ed4ea6bc6d4fa679ade255bb3634514beeb8219a8f0. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/QZHN52474770.
Crash Bandicoot Main Theme (Crash Bandicoot LoFi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b736a1214cdb27cbb5cee3f7ad9d3bfdbd8407528bad49c872c2239f59cecc. 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/QZHN62413269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03704460bf23bdc890f960963b392fcac614d4334e0cf937c29f18fa395a8686. 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/QZHN82432567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03704460bf23bdc890f960963b392fcac614d4334e0cf937c29f18fa395a8686. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZHN82432567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34216d05b2a32f1c2e740f7a8ae865ae7cc99bd950037230136f955c56d5d09a. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QZES62428339.
Crash Team Racing (Crash Bandicoot LoFi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03288c04ac17f7eabdbfa84c19c6a3cf5c37025429ee7affb0dab694255154fb. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZZ7N2419679.
Banjo Kazooie Theme (Banjo Kazooie LoFi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0b4d1f1316d9b5faaa277721e06d9330e9fbf92024515725171374d9047552. 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/QZFYZ2554458.
Treasured Memories (Kingdom Hearts LoFi)