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 0x16dc060e858b3cd9dd14ac360000003d4ca1a54bbc8de5727b8a05fe6abb8392. 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/70c18a88-6da9-4cee-aa00-e56f6dd71788.json and https://artists.proofprofile.net/proofs/artist/70c18a88-6da9-4cee-aa00-e56f6dd71788.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 0x1574a4f884dc3d804de961316849b3fc3e80a37c8b39399763dc207834588d73. 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/QM4TX2071012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f199bdb40f9047921db84cabffc76b823125bcc6f8fdc309f224020b4f2f837. 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/QM6N22040063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7bc46d6eaabb85de0256b2b4c7e4ec8821412383cb8808e77666444c155747. 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/QM6N22094606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8c3926afe9454ecd74cbe07bb51fc2e145831350a17b6365ede7ed3a6e793d. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/QM6P42059196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7437b2ec4ac5f1140cb8a5056384e5895573584d630ee6fd384eee639f3c787a. 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/QM7282098751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c2635e9a8c7234140772fc160c2f389afc3bd2930127d8f73898e38678c703. 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/QMBZ92016898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e3caa727b9e726d95151bc9ae9de7b63c7461f6286e55247ad50c6291c73c8. 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/QM4TW2168094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a6a88777d95d4e91625f45c65887d9e8c5717d9fd4e2b9b9ba081f636b4ea6. 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/QM6P42166377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a5e91fee3e9cd9c4f0dfca87221a77d5affe24988435d665479cdd75742c34. 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/QMFME2186086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61da481b8dd099b85aa005c9e3e02ede85c0591d04f6fa70ff856387cebce30d. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QMDA72142983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c62a3ffe8771aeb29d8399c4c0f50bcf20efab77732425ea60f917520bea02. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QM4TW2238114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57bce6718bd80ab0535bf94efc698e06b217d9e69b10e109306d22b8015c5579. 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/QM4TX2234829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb534eaeda0d3cbf9845d6dc6816be46f71bfe10709e6805bd5901928bed237. 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/QM7282375357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390b0201df02266b8690fb753c023f167e42dd224e5639246447a958786b0f17. 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/QMFME2310504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ca7b09699beae88bdca0bb833f80708fc03faffab8c938f2a56164bdf7e2df. 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/QMFME2359101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef91afa842955164e70bc5d7105cfb503133a04fa2a17ab763e77171e7729ae. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QMFMG2332981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa693256371bc2239bc7c87c1229b1e15c418e0c64250d78161356e038b3b7fd. 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/QM4TW2413274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe6a59a071a5711a6877ea27c28e1fe94e02e2f4c51a066fb1dcc1e01a593c1. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/QM4TX2486174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b71bfa5a5ddd4cfa94f67e6c566448a385f6bb1b33619b72d25e8405afd473. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T07:59:57Z), 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/QM6N22431320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95cdff5ca7a3227833c878babcbf11db1e1af8e022f790e148547f0c120810f2. 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/QM6N22444175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b7d8a7e27e18e43d601f598676c85dd52d318915ccad45df5db53cde1b4328. 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/QM6P42414676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd574e955382766c9cb8b2c93860eb1a798625ef0f24394bee8a1fd372bd9974d. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T05:47:05Z), 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/QM6P42444887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c3bcba702bd3f6b819a55809a579a358af8237195fb95ae453a1625afa3b14. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QMDA62408969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034ab1bc6b3366559f4633f6818e8edbc5bba2031dad2fe0ac5630d4e0c4b299. 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/QMDA62433422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b03b5a7bf10e5f561d85a1f9bf833913c6dc45c8c1fcd380ac8c467e2f924b0. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:49:53Z), 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/QMDA72459416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6cb617adedaac419a549d1aee531f4a3b5fc9bee1f08e00805f50060833d4e6. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QMFMF2456505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f716ca8ed1ac6421a25130e1024b5ee1d9771e6b99f686750b57387f72ab56. 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/QM4TW2551933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6006bf99da0aedadfa397b970dee2bcba02c8c54cc75238a662c7db0708aef5b. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QM4TX2522137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690a538ef5e34978d046ffc59150abe55511f88fdb32962a9f547bdd3bdfa562. 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/QM4TX2590018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363154db17a7e260e8e2d854fd1dac0718cc0c66710d410ed7302475f79c5c6e. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:01:02Z), 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/QM7282537513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc9d9e5e774891634a82b684956c2ae5556e481c5eed8f3939e618f90fb1f8a. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QMDA62502190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff4fd1fe63e54931ee5f6fde4b593c34461fadc56ceda9792fb46ccaf414860. 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/QMDA62567600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847b2be90dce582b7cd33cfcc65c13f73c8a04758a25149fad2d3e9d40cac169. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:31:55Z), 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/QMFME2504703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b328a45c30161586e4ead651af567e471403a42d5a44567a7ccbd512221aef. 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/QMFME2531021.