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 0x851f2eb75e15c8e4ce81a2443c7aa5a13277a96a46c1b8fc911ce1c9464f618c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1fd8ec83-1e98-41ae-93c1-019bf56db4d9.json and https://artists.proofprofile.net/proofs/artist/1fd8ec83-1e98-41ae-93c1-019bf56db4d9.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 0xb850a2a235e53cd9536810a7ae3d9e6f630e29152489506b0a18f0552958e368. 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/UST8K1788868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe777c9569bfb61187b6a45e594bd05306df621fef2a70aea1ebbcea54ccf3f87. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZNWV2152184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fec342060d4bee49ffe01a5edab8cbe7016971a53700963c742e80832004b99. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZNWV2139251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc894fbd595138617949acfae24f9b91a9a0458314dabf2c9736f0f0476f2ede0. 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/QZS7J2232788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095cfc9c407fcafeb4a2da9afe51d5e0bffe7c2a6f3324ba10fd38033ee26ed8. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZSYP2223843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28cc018faaabd1ba9b1df49478be7489cd66429e347c774c5ee8cabe7cc5584. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:32:47Z), 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/QZSYP2239303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8854ef477956244271e4a294c2d42b3d1ec0c0805a0aa5b472aecd6902497307. 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/TCAER2081533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7707637e477ce29691b252542126f57dd46194b703931119e130951ee833516c. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAER2081567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29e3e641a27d87ba7a48851a57b45476b387eefd9e5479da842c2da87309fd8. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:57:22Z), 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/TCACQ1685530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf519dd7950213dc61233c75970134dc33560603518ee0665feee1287f77806. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/TCAEL1921690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3da1e5637aabc67cfe6cd12ba2fc56dc3413a39028e6572416782916439e9b. 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/TCACR1688979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3495cd812791c80cdc82faa6d48576b2a9cfd07a9e2062cbd4be1b995548ebd1. 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/TCAER2081556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3573e6507efcb499da88defce177d93f357c60ea0a2adbc6373319b434bfff8. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/TCACX1730492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124ba0451d1a1b588279e97b2dbc5faeaef5ad9a9d887c1a92e3167106fde35f. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:22:32Z), 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/TCACN1626645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca581f91a027aa128b9d1d5266b6a0b0f381e4118ed3d829e54e508aa7dfd24c. 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/TCACN1626667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a59217cee7565c31e46ac70feb2f557dd60f0b40ede5fda7adcc9543df0a2be. 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/QZDA72377868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29d64aa5c0804bf1079335245dade6e62d44ed05ea025f0ec12f205a7c8bbe9. 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/QZES62216605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028f45e9bb135b2bc5e6150474ea230bb25edb8cf45eb9ab5a233e31986322fc. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZTLA2338733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a6f159be76c5183243d149f39e56a47a6568ab234a837bfc321adbfcec9b72. 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/QZK6P2355013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57c697fd3b35fcb847a378bdfd16afb8c34f967c58318a4e2672ead30a16325. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZK6P2355006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcafb445a6bd73b992d9268fb1d451404071025face4f10269f23aec124c57e31. 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/QZK6P2353795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2abb1c67ab7b67538b941d87a559f41b931a4059bd0a2966c5af74b26c08ed15. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:20:59Z), 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/QZPLS2490802.