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 0x7c2d249b4d0abcc7695a0badd67eab010c42852415a68962349d223ad16bbbdf. 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/27c36176-f6da-463f-9b3e-5463a6884f9c.json and https://artists.proofprofile.net/proofs/artist/27c36176-f6da-463f-9b3e-5463a6884f9c.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 0xbce841fd816476442302f32dc12ca2a91e8a63b8c3ab74f40ccbe87ee8b6288e. 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/ES75E2201339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f6f62f25b355d48f2a1e5e5c10791b59bd21e39da763d3e969ce14a0b6501e. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/ES75E2201381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3013378c1cdae31c2acaa905904d7188f20d665377c5c99249d5a985b244c969. 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/GBLFP2370481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2e58b957dac78e61a2ee186a181736bdd998e4b747725a78c179fe772062d8. 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/FR6V81407758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ee2232839c7d35fcc0a662706eb18889de03bfba9eaa0d94c09b557ab367e0. Chain 2 (Bitcoin): anchored in block 957827 (2026-07-13T08:59:54Z), 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/FR6V81407759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdbcbfd5d9b28ac377b1c49aaea348c75f421c8281e2c078c408bc7c60a35b2d. 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/ESA012233541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db8cd923dad7729ca43b4f5bbaea08890bb4741a0f346303baad1adb2ab45f7. 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/ESA012233543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111eeceaf6bc83523717d54919614011853c10c5aba8449e973304e6f645fb17. 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/ES75E2201692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddfb19019797aefa0a118eaa331992fa07a8e86447b05d5f3d4f2fe35ae7f5c4. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/ES75E2201741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf587d6afb9fd73df8de43db02161d8c25d9f93aed9a529cb084ecfa9cd3c86. 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/ESA012058958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43fb6990ca2bdad602e29f4ce5270ea442fd2c3cd4f1d9ab264d0df11fd699c. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/ESA012058959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fcb0773790ec05f7eea8a2b88992fb8c0328d35ccf8a4cb01fc740901edc5c9. 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/ESA012054901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81dcaafaa281a1eedcbefe6496ff33bc7fc0e40a6631ccc967b7eba3f000e541. 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/ESA012054904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c75021bddf03cc6906a159f4d927807ef261dc1927b6ed4da6e1f635852e11. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/ESA012054905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0daa7a0a2a466bacbf50a418af8d5bc41ddf7d995dba0145d7a0e34e0ae6458. 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/TCAGJ2240477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e89642f7ed5bb58d587dacaf218fac3013daff47310b90c347637264641365. 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/TCAGJ2240474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e7a32f47e1f8aad6d87aab89bb9128f854b0611bea48a6f970c85c0c3ff123. 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/ES75E2201747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fbdb563d21ae1dd38c427f4ab7198d8a5ae79a4b9d73616ad702982168dfe8. 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/QZPJ32205316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da6c6b24e641b44ece55894d901c0de903fbc53d896c76bd16683c5099c4315. 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/UKXN22260271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843e28afbc37dbe06541fca7e05950fb09929dfbd08aaed698b3915fa461ca84. 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/GX3Q92370991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10eaed4144666d659823363dc5c5ef32c39c645c6d98866df2be0826c6ec7368. 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/ES75E2201044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83bc6d3d9ff7fdfc55401f9ea1fab423528ea94a6bd3e4b4dde67149350bca9a. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:08:10Z), 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/ES75E2201047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5ff56269b4753fe31792f9065461bf61af503e5217eb3d065d3af972735d91. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:50:18Z), 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/ESA012237779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9a8fe8634eb40ba18fcdd33c4fc4f01b92beff28402f53f784c7e8382f014b. 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/ESA012237780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d35e30e6bc4ee3c52d2f6c976bfe3f85ced089f8978b84802faba63c1a9f162. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/UKXN22326326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495970e3283e30e7c11a2ad9a49ed9231d674d406b160a45045a9ab85f266e9e. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/USUYG1736834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c9b914c7509c452c190631a88ae0b7488bdf10b34b7054ce53a04990ee18b4. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:39:02Z), 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/USUYG1736835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335a0b62434e8c1a276ec35ef672e4fb8a520362ebf47c3c5d447ab0f057c0a3. 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/USUYG1736836.