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 0xc9db4e2706b55687618bfcbabdb200d0f46fd014a1fa4b5c561b25412362242d. 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/9fe24d7f-4ea1-4b21-a154-4d48cc662650.json and https://artists.proofprofile.net/proofs/artist/9fe24d7f-4ea1-4b21-a154-4d48cc662650.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 0xf5b0151860117466adda1ba09f93cbe6481910bca33c46508420a6208ba64fde. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZNWU2086628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46bfa21092e839b1b4df87b762eec9ea27de93a129e7cc6186392a607cba4d80. 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/QZNWU2086638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb449787dd67a1a5b9210fefc989d30e00fc0d994e7ee9f6a2eb5ed69963829. 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/USCGJ1438742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ebcfaf57d099f5b648add90d2aba8ec849c36edba09ece2006609777b4a674. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/USCGJ1438744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04dafced878bbba4994e11dc4dee98e7e503dd5985c8e79010ce1ce30d04cc8. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:02:01Z), 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/USCGJ1438745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff0b12fe14e66f8a5714218a1826d75630dafb011551acad941cb17ccbfaad3. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:41:30Z), 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/USCGJ1438746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c20390a53497b5f504f0c6000e26656835249cca0607ecb2f4202c6d76eaf2e. 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/USCGJ1438748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a2002f6a3fd512c16340d7bce55bb5053abe8f9c79164e320f2f85e0e9f37b. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:08:07Z), 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/USCGJ1438749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282d0cdbb2b2fedf543edb3de82e00a8d8498eb4045e52cf8f08c02fcb191f6a. 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/USCGJ1438750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0873e12478dd1207d42a24edc89613533fa8283221de16a2e3ac70c236a9944. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USCGJ1438752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38921ee3f74c596370f052286ef3fb55bb2e4794d7f6bd6ac6022a71180533d8. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USCGJ1438753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d6f2b1b47331c834e53b4219af0c51786600829189a8316768cfb7f3c86c86. 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/USCGJ1438769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb266a3b86ff1d8d2edf584f3e7f5092b5b13dc4a9af0481ee2b8f7a3862979. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/USCGJ1438771.
Shades Of Green 3: Yossi Green's Greatest Hits (Hartzig)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237a32a55d33fe3712a9c692b51d85ef944349024a63caeb9c842612d3d26e45. 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/CAENV1931650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9728ecb3ba7169469d2b8fbcc35b339264693a2b14e58a9edaeb54b62247a16. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:01:14Z), 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/CAENV1931695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9b462342257d7ec2c2268fa2f3929795677759daa42ea0e2f32caf18d764da. 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/CAENV1931705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca599dfbab88a23614460ddb755e10168facab24e0a39bac3dd497eb000a0995. 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/CAENV1931651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43d4b8753332b250e292005bd6f3150bd1dd5c3b324f969ca93d92868e82980. 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/CAENV1931642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96bd3a51dfc2da766d9091ff10632e0d6953707f92e768c401e0beba1826476. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/CAENV1931663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82552bcabed2e8f19d6f063aacd0cfa43873e1cdb84d1c12cc924c601dadb641. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/CAENV1931835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17fe31fd46b0715fb0b9ae635ca6401d2f8227088bd11b73b29705462b256eb. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T02:46:46Z), 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/CAENV1932714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c212c655bbf21466efba8f389e1a024457e457f054e5c555ee126416d16350. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/CAENV1931851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b937c8eac086c57e8aa5409c22b6c13a9ed5f8d04c6ee4e04da3d6427edc5e. 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/CAENV1931288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7586dc96f960c560ece720b12be0770885ceca80abf6c2b73f7081c7c7a35d. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:07:34Z), 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/USJ3V1821269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26af302107bb5ede3961498c233484eed6cf0fd6ca03171b344560a25760e479. 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/USJ3V1821270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2c7983f7f89d57dcd02a48660d6a3e1b11000376ae5d7716897986be004627. 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/USJ3V1821272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872de420c2064accfd117b473732c6a5a83ac768fc5b05ddbf6e744994d9051e. 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/USJ3V1821273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c98bd01fd7feb8fe97a7f03fc70b32e1cffc2993ff4c9591430dfbd2ab4ce5. 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/USJ3V1821274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe8ac9c947ed18fefb223b04ccb68b7dc388add36ec252a820caa760713986a. 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/USJ3V1821275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aab8a40a2bc3b9c7cbec843ce550a0f86f22779805c43b2fdb6b4c9c5a6ce37. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/USJ3V1821279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029040f1614ba990f06ce639dea52d44831dd540074b66bd00247118da3d35f6. 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/USJ3V1821283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2a2a9e2042b3d866173456586526daed9437fa50d1310c77190899fdae9d90. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:10:31Z), 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/USJ3V1821285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc24d3e273cee3baa1416f3cdef64ee45a1985704a28c7b8e5875dcc5f8ab93d. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/USJ3V1821286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9103ccdf93107204454633c750446a0e11036a4db7b31d4c77dcae33c3176da4. 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/USJ3V1821289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a4431059112c6b7cdd0fd953ee36d2ce5a8b406db6c029ba9724c25d6b28eb. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/USJ3V1823105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f180a44dde5696339fb3af10ac8857c7fa47bbf22ceba5f3db45c4519729b0. 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/CAENV1930143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3630387a3ee4c4bb0f779574c4bc6593ad8477815a24a23ac05b5a8f640c0aeb. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:55:57Z), 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/USJ3V2018223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665db8af34b9d6485dea55f41e2108f22b054c9d1395632443896400e7584291. 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/USJ3V2018224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14834d2f58a76bc4e211dade2ff32fe6c2a8af81b7959d3dcc41072d23b257e. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:24:32Z), 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/USJ3V2018225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b73fe40fe6856d54a58b641a327479b95013c9f142cdc0c1b1082d71bb1371. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:10:11Z), 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/USJ3V2018229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b6317e9dd181b05d6325b69d3514d84c8c0761d5026214cb5c0df65b0a42cf. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/USJ3V2018231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1db7d8f59b7c3be09d23becd982b664ff2ef3df6641febc894c9c01c817b68. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/USJ3V2018246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7343d3b7d36cadc798417e273c7259a6959076c4838d93dbe02ed109c54e985f. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZWFU2568845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17af80361c0c253617a2d1dd01663a1eb509b2c697419f903a87d2980d6b69e. 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/QZMEM2130165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf50d6387889660ff39d07e251e9b73b5be5fb0f5d14a3b7fa43fb3e779da272. 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/QZTB52320382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2900f59f8304b2b3cac31ebda9d85e7e7b9bda497774571852d9227077ce88c2. 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/USHM21923908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58877ebfc040f3ac652609a82fa13265dad34d4d3e04b875b8c6d8eabbe214b. 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/DELJ81905568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87c9bf60f7f5edb6a6d8aef9c4ca68722d62264a4eac9f76fca13c0ea2c49b0. 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/QZHN82405360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c9aac07b06a023fc769f190ea790f5a632741f518f6323d44202a00df5482a. 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/QZHN82405364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87981abeb9e5a8d8913fa091c50141e0df7fec8ae7891a0a9063fe56b88a7194. 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/QZHN82405369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93ea96c143e6fdee944df1a166cc0defbc60373f7ee95e02c996dec0e57d405. 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/QZES92510869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d10878e444d7936ae7dd43f278467d637a447762d9acf68199237b05022923b. 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/QZHNC2550131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e00e0364e86ca3247e6fb93e097eaebb402fcbde0d10777d45f0dff9a8a52e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DELJ81933802.
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22d71a836a8241118dab6bf3f2d6dde188898acd4402886fe7b96b6f97f6826. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/QZNWU2281752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04cae18614e71479d30f6561ac02461abac7ce821423e148c3c5345af4d69d41. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/QZHN82589239.