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 0x9150373e6e33c3e05a144b2e1ead6f77649a139239e2f493f8fd3b3bdfef4df4. 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/2dd66bc3-8943-44a1-a38f-eda392fa7817.json and https://artists.proofprofile.net/proofs/artist/2dd66bc3-8943-44a1-a38f-eda392fa7817.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 0xec1579f5d277e1da265dbce7c1979928db2d9c033e07c35fa28efa7a352124c4. 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/GBRKQ2304908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566cf7e320058c1f3bbca9f614678b3728fee1aeeabb7ec86b76ffb0d78d2f06. 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/GBKPL2138783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c223d88272886f1ebf21aa10fc88b645c356fbe584526a31dc8bc11c48ddb9. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:52:13Z), 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/QZ5FN2445541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61dfa08ca3c49d06562835c67b32cedba18ed4ad631853b316c8de0aea382b1d. 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/QZZ8A2329751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb02abb2f455c1a7aa896560d4a1bba24bba84fde439f19e134199067a1d471c. 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/USLZJ2169488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85e39dd724d66135874dca3f51545f2dd5eb1d6ff36aef5eab1c15493c355eb. 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/GBKPL1950733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1607798fbfa549b24c7cee2f7e756ad3e5fefd07190ccec9e6326b04c78575b. 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/USDY41779350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0b738eeef4dff31b24443425f57453dd9fbec1f6d4d3ccc6b8edbdaebd2738. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/GBKPL2007453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190d37fc909b024d2952f966d3c6f52b65e576955b0c359d1f51fc1f754330f2. 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/GBKPL1950725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcca523a7fd563d679ba7506515019d3c580c0dba87ec717c2844b81d4e9ca3d. 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/QZFZ31910066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2aee5ce7d0300d15b01de360b7da1a5aa7d43051aa12743d615b30c178144cf. 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/GX53U2446086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5b95b829404658f0b4ae09cb901906978e228d2c32e067b4e87aee8805840e. 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/GBKPL2160059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f61ffe5fc49576c5795c7f627d43d1185c9a370f0fd3b6d8d2ae52f6ba69e85. 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/QZ5FN2356206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x312a6288b2613a5c090a09473e4f6643a23d3df953841c2c8d1c89b9f9f8d5a4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBKPL2092231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3f1f7f3bdb60078ddf4fae2f16946bea8f7cb9770f8df24c823c8f2d9896ab. 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/GBKPL2092235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27bb3f5ff42f44a6419b5f7d0737097a2bd9398ff7af5aab1abb042a432774a3. 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/GBKPL2093854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb26d6b95b420fac70946506ca7a208897481a01e33687f9d9ac097b12576fd. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/QZ8251900886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19fef13d239b9a8f8a14494630242962e3b2b31c2d781d0f8d8d0db9c9b01786. 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/QZ5FN2356262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03abc4250fe1ca05d3227ac28d0f79c88340242611ec7d83c7124da3dae69f26. 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/QZ5FN2356200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594945cad80a732835b8baaa27610ad13a7aee6b9acee57c76af75b0cdcbed4f. 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/QZ5FN2356236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0e6869364747f1d8985f34e1829909555ad95292b91ea080e44046db6a79b3. 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/QZ5FN2356263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad0e90fef42fccd39c905a4f024e9b13e01acaa200d35f25960433cb4d67519. 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/CALVP2527210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18515451403029380b45eb5d51c405ff180da200543bce31af3a855aa9a7f56. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USHM21734131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576b459d16c22a5ca624b7395fe40474de7df9a56973dfadbea1465773a4e247. 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/QZS7J2487885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72de407821a9882d9b981582473b0eaff420581a6e459e66469e2068accca397. 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/QZ5FN2356159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a0a0b5d1fc4355dd5c116c4808e3c014b5f24cfd2a3dfb684fea634be8d17a. 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/TCAEK1998789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4635d935e0e33eaa78834788c72a6a2aa9fb1d08d1720ea9dc3b43e4973d2462. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/CALVP2527211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14114380af1b9bd9b217767956bc57b3dd5297e8f555a36c1fca924b8e3e6be6. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QZ5FN2356233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ca05aa399cc95470945508d4ac4db6f5584862608b363013532510d206383c. 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/QZ5FN2356251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc306a0b27ed4dfbbacbdaa61524ab650e62cea7e5d846355c48a6eea8575b84e. 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/USHM21734128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe554f1c2095172c9861e60a4cc6904e454741ba6daf91c5612f55945fb26837d. 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/QZ5FN2356261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6a8d342bdd67477f1529cae2f9225340ccf86b2dc5ecd1abc3ea1ea9bd8765. 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/USCGH1834225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d316fdf6d54d18f0443acb937119a88efd93ec0145e8a551d9a09168dad5479. 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/CALVP2527212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb5c4053ec8a71f7ef98f6bd1bd025f435b905c98219019dbcfc9fcc60231bf. 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/QZ5FN2356255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d434004cdbcf9ccd2ca4b6c9008aa7c09b1438c627613cac970f7246677812. 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/USCGH1834231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32407df69004fa8859e9dc090b33683d89739406ff3cbdcb2c0dab787212adf8. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/GBKPL1950731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232794f6298f229f2ddff6468f52778fc8bb002d9c3b421879541d950339a648. 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/QZW9L2476506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33ed0461a701d21baa529ee6d4912b89787346b764c205605fcd42f2bd0de2a. 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/QZW9L2478072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81cb28bf26736d85ca1417cc600455718f2dfc2b78e37227609396e38d5a6ed6. 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/USCGH1834230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8850c575c8f034194382e3496f1464eb72d7657d8eda80462496fdada0f16e19. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USDY41779348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3478814e22661b8622f68eca9e799ce787cb9475136d3fd27f7f975ff16017c4. 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/USCGH1834226.