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 0x0bb2d38892677fad10804340d67dbd6225c459629095873d756413fc32ff521f. 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/817f7d63-cae9-4361-82fc-305b13becf01.json and https://artists.proofprofile.net/proofs/artist/817f7d63-cae9-4361-82fc-305b13becf01.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 0x1f3ee29b191ca2c8dcc3c081078cebde797ae1748388c1a654bc7d8f4cd9b11a. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:33:14Z), 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/QZK6H2590145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd822774f78a8dd40a48f1df6defd9700aa8ce39b85d469f13d75a2b1160f34. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZK6H2588526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6bf669276269a8f6242f09c64d66ce408a79342a3113e6ab515733c20cb47ac. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:22:22Z), 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/QZK6H2548395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67bb845f64b16956624b8921ad7f063037ae8413fd18ba36031fb655fcd1772c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:04:08Z), 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/QZK6H2549841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a32b710f3e780c82ffde5b38bd4522edd6a90574a92db3d4c811c9e6d6971dc. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:04:32Z), 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/QZK6G2524699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa53e7924695b02f300768a07fcd3850e850a31ac32584b401e6c42d8b9aa1d. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZK6G2522067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6a821ca8d11d197bebc44a6468772a66a2f9ffafb9861962e8b09d97f0f1af. 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/QZK6G2522099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac79208536faa40290a9bee9d75828509448e6a3183a1172361e3b654454207d. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZK6F2545152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9462bbf143fe22b9ec50ec0702167760593d0bb5fb11bfe29999159e5e7f146f. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:35:41Z), 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/QZMEP2561965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8e7899d69eec9cbfc999add110cb14403040466316a0b9011e5e56b1243432. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZMEP2560080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc607051c2a1f8e14c946375e635b53ea3f292daa8f08cc926b87c336a37fe858. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:41:49Z), 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/QZMEP2561967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f0a26b8b393e814e67eae1194fad33f177b0a79f0e181c7f9a279fb69b7ea4. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZMEP2561968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74e60032563d0c382b14b58dcb8a2cc6069f6bd4f0e0ffd0bfb5c7279da351e. 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/QZMEQ2596011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2284e9c68feefc705fdc621c36786bf9f4a37c11934541c51458d2745ce3bb59. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:04:49Z), 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/QZMEQ2596009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f0c83482de34333a6fb08e47f45d88e6988e26332d2838888d85bc01ae21d3. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:21:01Z), 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/QZMEQ2596010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655e20b547ef43d837d33a500e2fffff8b8127f780d2ace88e524a032bc62428. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:18:06Z), 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/QZMEQ2592770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b31da4256411df0da71129af07af7551d337ee0fb023f8424cc6b8fa222b58. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:10:23Z), 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/QZMEQ2598499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e1a1a8be98bed58dbaae659de1b9c2a6f839e808a3526f7321282c1d4a073c. 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/QZNWR2536975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f1c5937524cde4e15e51e803b59d69de9950652f8edd0a8d69bafa1b4ad665. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:46:33Z), 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/GBLFP2584558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc096667ef58d9b4704b352476e2121633e9814ca6822c291a99b55c996dfcc. 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/GBLFP2584557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd699353020eb9a9dc776c04cea45a22551bbef39a27b9b1a0778a2f9a3d91ae3. 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/QZNWS2594819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3766b1cc1a1c583358651961b8bf86f7f0feff770383400258d3cc273c1a699. 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/QZNWS2594820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7aa86cadef25ca83052dd78149325e8bfd8f18b8632e1ae8932e30f016428e4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNWS2592758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a666d281d7f019560058a82814337addff42c23eaae03895f97af77e9789029. 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/QZNWU2529789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27c66d1af56279fde6eb4b41a1f27163a9009aa97d47775b8dce05d8c2f73a6. 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/QZNWU2526877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac013ec99217def3c7d79d661a222b61df84458784d637bae6290be1fb533b9. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/QZNWU2527124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93359bbc4164cf1d286f943c1562b5b1bcf9ba3ec841060d8756c14e54118b74. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:54:05Z), 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/GBMA22566586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c57047461eb7cf2cab9ac8b579ce4ef7bec013a8f611a20efbe873b2536e82. 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/GBMA22566531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7d82b198c4c36b68c447af58f136fb10490920037cd67bbc009d49dfb7b10f. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/GBMA22575748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ada276327a8a1bc04a97f6083f02a96bb049f0f7ae306c7a85adbbc80d862f. 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/GX53U2534808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf014791e43e27c59b8232126315efb9ab71b4c178c24c7df1e6dcc4dd443338e. 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/GX53U2534806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2246f132f4c58af2e47b0b9cf2b7b9fa8b8c508da138ea35573890160354ce31. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/GX53U2534807.