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 0x8e15a73d38e2e8a4d4b17639b1b5145a9a3a12aae764287cdf8d2d6510ec327b. 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/6b3f5d75-db52-48f0-8d1c-4e6eeecafcb5.json and https://artists.proofprofile.net/proofs/artist/6b3f5d75-db52-48f0-8d1c-4e6eeecafcb5.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 0xca358b0994b44525a6e02b6ab8dbd30fe1dfe90228ed7b5fb347e06a832479e2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/MXF110000185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b50bce37cac1e8ae72b70e3a0e3bb01a694710f4485540025fa5c532357a37. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/MXF110000188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd30aa35d63460b73b574796ef539b0447c6be7139b754bb49504f0ded54469. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/MXF110000189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75055a17256767fc54f37abcf805cd2a308d617cb9e5b92feec30331fde8de05. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/MXF110000193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737981c9929bb0a3937aef2e1b22fea62095653e9888b3f798ed14738885c247. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/MXF110000194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd834d087eaa5971473444822716044b96b712bc0daeb978f751fd456fd25b9a4. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/MXF110000195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90f9057ea0f186839a5f4c5344166ac5a4c33233a43eafb3e4717583d394458. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/USJ3V1487307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0692804654fa6ee591b27e7ae01a33d78920561822a578a6cdca7680596736c. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/USJ3V1487308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4787568e9ac33421b9542daa3d1ff9038f85b7d09e7b60ea2969416ab292624. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/USJ3V1487311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409a49f2f3239df4ef1b778533a838e8380b42f01f8678dee2904786fc1f6ea6. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/USJ3V1487313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdac28d25914c643503de317ab7d18368c726a109cd9b7656b481ebabb63e55b. 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/USHM91954398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e25f8a4e94a1f085d732b1d1e247cd79053ed8f6a30342adc3aab74ff20eaf. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/USHM91954400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26284d035a5187609a1075a032c736d47886ce421d1f84c30ec38653611d9dde. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USHM91954405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23df330911f4de21a909fee5628f2918cbca9b088f234745cb291095d3a71ea. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/USHM91954406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc460b962e81af3e151214a5b3fc9e26e7f647190b435bad1aaed1a3f40e132. Chain 2 (Bitcoin): anchored in block 957608 (2026-07-11T21:00:50Z), 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/USHM91954407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987e7814df44cd138b55c052ada314044217e1e60f3187706232449611005fbc. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USHM91954408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6da08694c879cd3a8e96aebd21f408d31ca2a176b714e407e1539cbe8ebecec. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QM4TX2243607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fe9a3a6313585a8cdc4c3cafa87752c6503eb9002a7d853cffac37158f612c. 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/QM4TX2243609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647c7c2ed46bc261d8cae2780922283863003e3f5fea9cb85f15e865534b11bc. 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/QM4TX2243610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0cfd1a69fedfc09d5e2cea73b952c2bf19f3c6b9f083a9a333dbc37cb97059e. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:09:20Z), 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/QM4TX2243611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a7bbf05a8c21b2cc3cb962e26b3d3301a9b3a0739a8f8f117896a105117730. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QM4TX2243612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66ea514cc22395827fc66252ed23591491be4f1132b07ba86222967a6a1e44a. 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/QM4TX2243613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2076dc03f5d63c29f6f46d9ddcd3701e1afa1f314e67ff374735af76b7d98203. 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/QM4TX2243614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b59b4268d9693ab3a610efed8ba3207d039179f434b5039e4d7b36bbefc479a. 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/QM4TX2243615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221c6aa7367525a2c9e9256f343dcffafeaa97f5b4ebdedf903d321cc9026ce2. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:31:46Z), 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/QM4TX2243617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70fb1d3143ae8a96e9724f72eb35c74c8399100388ab110fc70d084fd373a2ab. 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/TCAHE2390328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955cacc4b4811ef89dc36e620aae1fbe18b3c1c2e59c02d617b3078cd8947132. 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/TCAHE2390283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55bc864c57600ef6cd309b72797a905bba48be7d5315df8df1ff4a7bfa935633. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/TCAHE2390277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3bf900743e3803bdd1268dfceba42530e0ef2db5fafc32f58510dddf3637c18. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/TCAHE2390320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe07f0851708bcde4cc826bb1213385c420a3d203eda7445caf329ce4c20bb6. 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/TCAHE2390324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708c8837f6aadfef0dcc308c40b610809737c01cb72ded7c8bde820da9312d3f. 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/TCAHE2390276.