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 0x608b5eb704c704204006631a0b8a4e3028b13a8306e1d498f841a78ca95c8c5c. 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/c75d8137-4e00-4958-a113-fd32e6a60262.json and https://artists.proofprofile.net/proofs/artist/c75d8137-4e00-4958-a113-fd32e6a60262.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 0x219b7ad9fed052d2488ccedb34f9b2270fb40a6dea0154099b2f07199147d5b4. 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/QM24S1808692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a283cd79986e668ad2f85444ec8c74280c037625b597c4c365fa43d37d2b302. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QM24S1808693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e281a51dcd5f6d529d719ad8e459165638de072a10cd3100c5c903aa305909. 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/QM24S1844620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6c2c20cf51ee08c37f911aa27c07eb6e49f2448255f8b8a5abedafcfd8fbb0. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:41:37Z), 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/QM24S1844621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4fd875a46b5a2a719567a3dd4d08cee2865d09ab4722f7f0d0183878f70563a. 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/QM24S1844624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab74d8b7014eeb65c4d37977077b43db9e3cfa75714e159c775e1679e8d5e19e. 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/QM24S1844630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d669a2558be27f0616804eb81f8d593d2a344580eabad2528f1827596e8c7e8. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZHZ31915555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c497e15ec55ad51ddfa5ee0d13ee795072c74b3c768f04d178c95960d46917f. 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/QZHZ31915556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b8b824eeb9d4c63fca68fe6a58778b7e29e68ea6a3123311e96440204a82cd. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZHZ31902245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42ed2db1559b694f3db4fac647d40d4c7e76d283458a5f69626e7f5e18acc1e. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/QZHZ51912417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a8809a527ecc18c9c46097438532ab48432d1d0af361d11ad6edee1f322839. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/QZHZ51912420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754cd46a27b982d5ab2e3b20054bf99669b8c7f43465bbe031e8511e7dbd5108. 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/QZHZ51912421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2fb0ebcd5291133ea42730accc4fd4e8df164f6505b61efa0273c0636de88de. 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/QZHZ51912424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32cc6be087b3d469b630cc6dd656cf4d02be5f893b533bc4694ae11e55475df. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:45:13Z), 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/RUA012200574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe2f780ff65c26d3f1e94d112326258f1777c95a38fc26c5eb2d0290b02dab5. 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/FRS182065955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea93e9c25457b97e13455a74c9efd69a204d6f99f31501e653f390dca362eae. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FRS182065956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd356935d010876e738a7d26509cbfe3d660c336a518583bd8402d0454b0c4c93. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:05:12Z), 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/DGA072148788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc36f510363e7f1c9e8c7ca5b613cf7a8aa8362f17eb3fa0d9c4eb5539e592ae. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DGA072148789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffdf9e8ccf87e64f7bc7b02dd9177fb770bd6517ad0f4255e87df3368eb767bf. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/DGA072148791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72410f093b610d4611ee11ab1ac8f5d856b28e5a1e36be1393073646b0bd25f. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/DGA072148796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cddd1433e46aecaf27e294847b03157a6b06599e38923ad4c7b0c5eff9f9b3a. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FRX762100761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11e5ce6802ffa3f6c07902b4f7f7aff55147c4030a3185f5dd2d2d988837f98. 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/RUA012101535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa076b0d09eb1e0d2ea29a5c98bd7670f2cf9699600238132dbc2738b7e1b43a1. 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/FR59R2399979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf52210a71d900c3a748bf68a05c7cc5ee70f0d4605c88d6e7b3d525ae4ddf82. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/FRX202336603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb473d56d2999a1e6ad3539fe56f46751568392b077ecfaac19de38c583e31629. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/DGA082357413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cbc5d1150391b3599d944667848b191659c50f46f74d4afca7f32222b27c8a8. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/GBKQU2374783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bfaf37b0a1cf84fec70c32e09f8fa8e3ac4aa63cde57135c60b7ce6bfb27588. 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/GBKQU2374784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b9aa4744627b33651af8fac8f41b92a1e5c74ddbf4142dfb81fc5ff842f49f. 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/FR10S2441838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4af4f1d6787ed45d6a464fae96cbc828030eab84ba4265ea4ecee26cb509f4. 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/FR2X42485415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6834d6f55922c49baf45a25add462eef0c4e95afbd661754eb87c372db35f8. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:57:38Z), 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/FR96X2448382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f3a1ce142ea87755dcb9d416682afa3009b7408f691aa8cc0276922288ae21. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/FR96X2448383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176160461009e7983f786b88954384236e55a9a2adb894ffd6c0a34d4c21065e. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:06:05Z), 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/FR96X2448384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3afedb30e2207cec21195c685f764f4855d6bd7b36ae4cbfc8d303437a21d705. 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/FRX452477697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a15f2f3c8f8bdfeb58e5013fdfa9c5692cd83bfe5af6081c24336b53e46340c. 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/DGA062432348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc017232f35e5ea39c0229b273821fc085147931831f3e58ab6b8adffef5c105f. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/DGA082415641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdddae1f18c35080fbb282e0867a84fe108bdd5fe68263fe92dfc5179a37570fb. 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/DGA0R2469285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63bae0e1cf760e4b1c390e1a73d4a66387fc06feaa15cf3e33af3a52cda7cef6. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/DGA0R2492721.