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 0x1968f2df13db8a3446517000b366959a4ff0fb70bbf9aebb272e1fd9c6683caa. 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/7a382aba-7c3c-416a-89a4-a0dc3ff7dfef.json and https://artists.proofprofile.net/proofs/artist/7a382aba-7c3c-416a-89a4-a0dc3ff7dfef.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 0xb0bdc2abe07f196be6fe06092d7922caf65a7dafe6ebbecf9c400073d4c1ce21. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZFYZ2104855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08eb376328695271b10e942d1f4c0cb7e478b6e04871236434ce3f7d7d039137. 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/QZES72198324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e954ff2a4f384aa3b18a6d765b237c8962e2f85efd3aa607d02ec512bc35911. 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/QZK6N2106803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca54e917206271777f189f781eaf9f4ad1eaee756cbcefea8b066a2247c4600. 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/QZNWV2135742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427dbe9955170d2e30aee6a322c7a43eed8b9db920e88226eaadbc3cf0272440. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZNWX2189690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1353929a4404c881e743405eaeec0866b352f5695d3a5a3cd07f5b97d3671120. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-20T00:16:33Z), 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/QZPLS2157646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2ce717ca6ad48b8d7fe6da3200e78a20ef2b3bc5a46d9abd38e8436cc105a4. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/QZDA52242934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab761f8a6ada18d8678fa1b0b48204b50c2dbbc366b2d3029616184be6eb120. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/QZDA52242936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583b111a3fa21dd9144cd3a3ac5f9a7ccfc2ca52d85dc0da005c56809b09e996. 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/QZHN92237605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeef1a28bc7e3121c7ad694d4f38d712f5bde2d767cbb98315c62accb9ce237a. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/QZK6G2293173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583b111a3fa21dd9144cd3a3ac5f9a7ccfc2ca52d85dc0da005c56809b09e996. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:08:57Z), 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/QZHN92237605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbccda18726174241e6875132d4dff06de4c9e4cd5ee07f95e40047f3e5a9cb03. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T08:03:48Z), 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/QZMEQ2288051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c067bdf075f8c1f64beedfb83c25e49caf25d390c5fcca6e38c3a661583ab7. 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/QZMEQ2288052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a324457d88dc09125535538cf2657be14343c194c5fa70eae90db4898e304fd. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZMEQ2288053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b95ab443751b3b527b0f67e183d796721d4ad553b3e4152d0d9306899d637fe. 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/QZMEQ2288056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f14bb957ce3b8a519058a072adae086724ba1a01b26366b066c1a301f58ea0. 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/TLREW2234830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b5c63976582828be8f70e60e515ce2dfe160f59dac5405ab4a3884042151ea. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:59:16Z), 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/QZVEM2302847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46bcdc39567538c72cecc2a52a37af4701e0dfa6a0b97ec52716ef5c4b911bd. 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/QZVEM2333047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x782cf39f68d26edef00c499441582858d83f96717beead1f5ccc460dccbcce2b. 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/QZVEM2328619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa37ace24765671380701d7cd9542b72c7c178b5a4b670c3e21010cede1ccccee. 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/QZVEM2333049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf710f42be3de0d6f5ca390d0fa75a1f9b3e159ba2651d1ec3440580a1881e49c. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZVEM2324277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1840014f47dab7be532715b87d108c3601b69e928608eef6b079b9389f20d337. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:42:05Z), 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/QZVEM2352510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e76bc1586f2e165e2263ed35c97d47e4472876bfa91c47ce6946caae4d4266. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:01:24Z), 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/QZVEM2381429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe137f151a9aed6bdb7c256a314221ebcd2317fdef3a8f4c221d2a22ff1151582. 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/QZVEM2397619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a6f826b74bd9f05a908f5284251d419c89987ab7873b6276431b55ea130e89. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:03:31Z), 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/QZPEW2404200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6432e3c1b2e41ae8d1be0adb11c3d46dec834484da04b66d69ee67366c635eca. 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/QZZ662337706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e76bc1586f2e165e2263ed35c97d47e4472876bfa91c47ce6946caae4d4266. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:42:00Z), 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/QZVEM2381429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a773b37afbb78f69b53de53f99991f07efdd01ead6941ca5c61ae3f02117c7f. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/QZVEM2384796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96748979370fea1fe79687e21ccab08b86d3566c16869b3bfadff764a73999cb. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/QZPEW2403666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a0210d709a421c5d9611802aca409f9f35da688fb8fb223f00d99f8e920c4f. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/QZZ662436035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1840014f47dab7be532715b87d108c3601b69e928608eef6b079b9389f20d337. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T19:54:58Z), 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/QZVEM2352510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c70eb60784986be8d065036d9093e4dafc41532ca5b185000aafafa37028c50. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:18:34Z), 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/TLVEM2463434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4ffab3dd5462c3b74a1b7bae618f39c0c57238719cfa18e51751fca1146ace. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/TLVEM2463437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c19db68c1314aed27b01edf4ed2a923570fa220e6abee1d128f5d5ed444ed5a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TLVEM2463438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7d703956ae0d610a1dcefb2db2d7f2895041cc9fdc913eba9b552fa26b801f. 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/QZPEW2528469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5caa4f07683377c2d2cedeaa82423ff89b1ccf605a147f8f8b64bec1c1cdfe5. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/QZVEM2556940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405bc7975da4feff3ee67bf9205cb06f62b46bd9d0ce5869a557a0ea2178affe. 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/QZPEW2599630.