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 0x5cc0555753c475e64fc5a04fa3f3bbf402756647f647d904b0a80be64a400fa4. 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/aff75cdf-fe44-4fe5-bdcc-ad370280f7e0.json and https://artists.proofprofile.net/proofs/artist/aff75cdf-fe44-4fe5-bdcc-ad370280f7e0.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 0xf2050f8ba3a8aeecc61db48108caa61126e1e533de1b7caaba42cac369bd379e. 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/DECF30200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d0566e6883a078863915636308b6e8a3814fd658475eb7c96613c28c4a909c. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:52:28Z), 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/DECF30200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032010c2533db8f88ede570906c9766d5763e6224de683f01c03b50036290ced. 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/DECF30200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5245085930f9c08823c5150a4ac1a1e58cffe06e5eae2cb772b4b588893269d. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/DECF30800108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce804316752d88b328ee30ef95083efae5cb9ec31e99adf803534b72be9a4b9. 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/DECF30800110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4dfb8520ae0848cf8ddb69e52d3c545c1efcf620488c77d2545a965b9bc7266. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/DECF30800115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd964bd509a8ffca18e6fe699a4ddfa7454f0d2863b2db49df3d33f06e58d9e8c. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:52:51Z), 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/DECF30800117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6859bb6c301de454574b6457c03be3302266a7cc9209ccd71c0da68529dfe82. 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/DECF31300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c648780c980a1044e8a424fc5d118991746bbffde65c19766b0f3fb023d5e5. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:03:22Z), 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/DECF31300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32105589764ca9a14e897129075d7fd926968a34f15fd639382fbc4ba8afd56f. 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/DECF31300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c41d545121dc97ff83e750c6717127358f06abba8a81789c9bd7a46fd96f24. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:05:48Z), 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/DECF31300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44993716dcbab5b9955b65b8f9f5df450beb11e70b14bf856d72ea46acc002d7. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:15:52Z), 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/DECF31600013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9e8dda9b53d3770736abb070429061315b08d0b3044168b8b7d864bbb79a25. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DECF31600014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9eb35d26eaab1f30b5d90f8b740043147c6a8836a965167fe9bff6db206a34c. 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/DECF31600015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264b51cc5bd272bc5784ac5905287fb5a830d9d3841cfd70c8e38085a24bc073. 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/DECF31600016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1840e2e2d9e1089fb26aeeec96dd97f2319103f039a38a1db6417f711d96e9. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:22:54Z), 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/DECF31600024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ce44c923519e680cfacea279ef9a3ead0fbb82580799d8f9064f551dc47927. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:55:08Z), 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/DERK41900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9596345d38b9174b8f73ac351cb46a082ec1d5fb4e4df1b46631cf1075b961. 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/DERK41900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47e17049d692ce349f476751cb1ebcd68fd7c7621be73a4a0d8367e0691483f. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:19:01Z), 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/DERK41900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d5c87563642c0efd212f6b50ee4e7f64cb669050329baaee60b47c7787e37d. 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/DERK41900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955ee8144afb1f42764d20146c8ef8681b2cd10b4f3928be982e91b4eae86823. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T11:06:28Z), 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/DERK41900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b34f88d575c5b748f076ce2a830dd1c15d100a362e77d78d93cdb202207d713. 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/DERK41900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42b4858684a2e34a7a52c5b1d0d45611e451ab000572f6e75c0fdc594504ba9. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:28:01Z), 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/QM4TX2104068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22bd092d601d8c0d3bf582078fd1caa4e62748ba251922ff5dd2b0f2a32f0c2. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:53:18Z), 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/QMFME2184957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2da47d2b59680b0507be25a1874e391adff97ecad169f3c281bbc6f6e0249e. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QM4TW2111908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a48672eb16d45a1fe3845a04bc9942911eafb90ad7aa623aaac8513d6fd0b53. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QMFME2184958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689f8870e35f47cd1856393d6d1861c4c6535182e83953c6e488c738222ad33a. 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/QM4TW2111909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd78b502cb4a3ae4673c869eae609812e91a3191b25ebf7e6f3470ab403fca45. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QM4TW2111910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c321b6eb62e424c7fb1a6523c5e87d0a14bf504e339fb1d4ba4b888e41b1ba. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/QM4TX2104071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d243b23efc01a7ce890402e2844e94703e236100217680df96522d963c1340f. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:01:24Z), 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/QM6N22197722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a450ab06fa587d23c6874e5309e26a52f1160ab36364ea814902e997b46b9e. 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/QM4TW2111911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898682a36b8e6fc145f05cdd566cdc66db1574ac259eff186e5ff157becf6a7d. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QMFME2184960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42cf4c1c2962d0ebb5c2c4456820811e9e232f8c6c8090b80f365cfef378ced. 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/QM7282336764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46b9d9f0aca03b8af9a87368a0e51b0bf1167c74c33d4196cdbfce5dc727de4. 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/QM7282336766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d80d4c08a8652a1424e4e9f3ad58acf368e2e1d406a151f1100fe5082b6fde. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/QM7282336763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9a191ffc94cd12c026bc13868f2857c619c0506494706402fb18f3d1469334. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/QM7282336770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03a74fe26b133e4f2e111a9643c0e090ba5c10424f05e428bf1d808a85d6f6f. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QM7282336772.