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 0xf118b1b6ff2137088e302e23144578dc89f1ef0d8bbc32670084b031d306747f. 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/24091f2f-7de1-4bbd-a6a8-828b1457fc73.json and https://artists.proofprofile.net/proofs/artist/24091f2f-7de1-4bbd-a6a8-828b1457fc73.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 0x9c68f4d7ad9a7d5fa85f3f811b564ae339d0cdba165679c9f61408290ddccfb2. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FR10S1943323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea4b9023fe437e89ddcf157cb6b164e07ee3fe0173706d5843c64d92da1f506. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FR10S1943326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5cba212d635b6e33fdcbf56a3b6c6f6aa21dff0e46fbbf09be0a846aef36ba1. 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/FR10S1943327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8525e7f3788f3fc9fe9454b74019485eea24035aaa062d8062dc03616073aa0. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/FR10S1943328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x074dbb311ab81324a3285c3756d895ea18e156b832c01cb90a35fb9ea0fe77e4. 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/FR10S1943332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052cfb41f276cc6181882cb74625f916a6461831fab9978b75be48c363caf580. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:21:03Z), 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/FR10S1943335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317fedc22c31406f73969ab0f0fbcfb435cd696eda5fc3e3a2cf52ed43060b5e. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/FR10S1943346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899066bc2952e1edf4d23eae9e4ff73d2c82aa394203cb3e1a7f4d2acf361114. 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/FR10S1943347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca0f5df5f12b1397a6bad4f1139c34dc90eaaef209cdf5ad929c000bd7f252f. 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/FR10S1943349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6b8a322836d0580b84e5f5b7154463d426b33f4dcfd1d55dc333ad50a95ecd. 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/FR10S1661228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fed589d13b71051e0191ae3e880eec6ef1532ab80e1947e564246bd386417ba. 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/FR10S1661233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8caf09ee7139319b08557b95031d4b9f1e9f6f2c906b57dfb455896e200914. 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/FR10S1661235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67448a827c12ad6a2d89dfd842941550f70f03fc1684c1a07fb6209e4feafd5. 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/FR10S1661236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b7ae04085bd4dc5c2358be639b577a0c30f7c59ef0f52cfc07e9ef4b9fe19d. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/FR10S1661238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd59790a98b3914a6bc62448c4c4ab08617223b45b7ec907915929cd59bf5094. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/FR10S1661270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47faea4ecd67d1c3056590048c6d7ae7103fb7798a5d9807d6e568b5f26edce8. 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/FR10S1661273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5291f0a418823d2e30553f6cde08889eda23f454886a500a5abc3eeffcc199a. 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/FR10S1661274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3468e54f5a35aa8b58c1ba7362d49b7d96254fe284bac132ce03191203b7db61. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FR10S1661278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e02233f5d11248f980799b80875b1adf8e00bc2b33eb964eaa1a606ad40683. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/FR10S1661281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647c0476f12b0e48251b21bf182e16b77ba67a957825cfcf345bf3996c605477. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/FR10S1661282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b0f4ec664bbcb1e9a4ca9614253d7e7b4bf352261537ab4569540d40400781. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/FR10S1663742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f97f2abea2008def459ea6ef2f0b5edd49aa2f12863d78bee5a5e7fb015f81. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/FR10S1663743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aada4f6dc7cb0e332b56c45944b14ae06d85b2e3ba10015120d108451bd9c19. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:08:28Z), 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/FR10S1663746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02ee2381bfcc5233f87cd3ee698e8136d2e3e7db580eca12333444cf7800282. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:04:44Z), 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/FR10S1663749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50a9a24a1f0dc20af8b9e87bfc3a7a457872134340eed459022e33556409163. 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/FR10S1661245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055ff0e107d39718090f0211b8dfa39f4cdfb8e538edba2060a62083b558862b. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/FR10S1661248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdaad1d23781181e9946b02be79461ebf02faf95d19b70326c5261a310dcc04f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FR10S1661249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc3481a92b9c26a5a1536b00174b21cb960b750f466e49484478f115b82e608c. 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/FR10S1661250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbfa205ca51e93d8e429a40108b8671f3092c0cffc671491a5e84a5da902684c. 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/FR10S1943366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b77369e2d3d462a20bd91a0e27ac48154dc20e9e21ad466e5caf5a854c96cd7. 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/FR10S1943367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde3aefdd97683d6c215b79ca5f811a3d718f8a539d996c32e7c20be466a4d13. 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/FR10S1943372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a1aeadb386dc68e25b7b3ef06d48b7a5ab270c60b44c35642ac6b15b7c988d. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FR10S1943373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4048e094c6e25e7d0e21f45a62276560469b3e58ee4773b71e99a4cd58e13c3e. 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/FR10S1943376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e57318084611ad6651931c3a93abf5a979ad4e16215fc0c1baab1a8c5948fb. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/FR10S1954615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99039c809b269e372afce043a837303b3c06455a8c7cae8d4806bca7beee5b35. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/FR10S1954618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x739fd3be1ce3352d6be5af26abe4efd3dbfd5662b63449dedcf2103e80eac1fa. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/FR10S1954629.