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 0xf8a67d8524a079c43872a66053851f154e6c98e763ae4ed6cbdefcf49b746420. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c94d2ab8-1499-4f39-8e2f-0b3440763280.json and https://artists.proofprofile.net/proofs/artist/c94d2ab8-1499-4f39-8e2f-0b3440763280.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 0x4246c839c0bcac1343c3db5899d7109b41db1ed7de82d7c881d644485b694375. 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/TCACY1715649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed7d1241db3411ce66f6885be8c61b090afd857e776adcdb5d5bd4ff4f0733a. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/TCACY1715652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe668d0bfcb4ba1a877379e6526d5d99ae8ffc5a65691bd03aa21d11deeb64955. 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/TCACY1715657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fdc69d775e69f11a762c7906b0ee5e800348c62c04664cb787f44734d2da1cb. 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/TCACY1715662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad13523b0c1ee35a756326a725161c010b9b42375b3e1cf90269fec0a548fac3. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/TCAJL2578066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabcb9a0f318549ffd466fe82296509bff46082a971b22c5eb5b2df1fa751b491. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T06:31:36Z), 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/TCACY1742673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54997f1c27b2c87c50a5d1051f1c0fdb86731259fd1298feaffc5418c724e9f1. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/TCACY1742674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847bda4fff8c80880e73546f3d3ab7aadf2db2f86aecb749b86ad1002f8cb701. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/TCACY1742678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10f1bf60b20675fa5004772d3ada6ad663eb481438144e2cb8ed2a4641158e2. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCACF1510745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7998d053557438c6ddab7f919f54915b74d2233b8d12b13ba4d00f16397efe97. 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/TCACF1510746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5355f639985fbc922e4339ba667477388aa54419d28d7026ceb4748af03b5ce6. 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/TCACF1510757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f00c0753d968b146fca7f760af93a30ca5841e66589bba878416ac386a65724. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/TCACF1510759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc09df92238c64429ae878590ee478f65bc58f87a53eb5e04945c621b4fd081. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:38:45Z), 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/TCACF1510770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a7b1aa68e6ffd8a421b9c8c40dbc629279a9bd32e3eeaa3f4ec3c09123ca74. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/TCACZ1793842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e284263374dacdbb529ee90f659c75f9464d486ff734762bdd9e742fc51ed1. 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/TCACZ1793850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd752625ef11e3c813dfc0a5c64503ce998b3d98d12366f1ade853d0340edf4c. 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/TCACZ1793852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5af54ddfe777a4355657be6edd03d550f53c70bba4f32487edd7ee9c044224. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TCACZ1793863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea2f32d8cf0b3d9d30b032b452e521139fbc96f74e26cf4cfdd252941e9d4aa. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/TCACZ1793868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7c946379d3e91989f6d71366bbc7f3745c96fce60cb76b7082be03ee622d0c. 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/TCACZ1793876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2659a90a1fccc26cfbfed576da62bb25b1a0ac1fad9716b7c8396831e37ffb. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/TCAII2424506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a60ca8a3cac6d3797857647eb6d7dd99039dadcf6b82613db05ea456d1e1b49. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/TCAIJ2424526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6bb8f8cca5f6b7c8191ba0f37aa1884e99a69ac821e60ff4c7fec58ea6f1cd. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:02:39Z), 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/TCAIS2433361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c35b15cd57e66352792f6b00d61861e6e56fd8b2a54d069346f25fb9668a87. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/TCAIY2402118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35fc820d9aed2c4181eb6c5873b38c26ed0ae99165a4dac3090c007b1f5fd589. 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/TCAJB2443438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf04a31ec14d872eebe737406bccce5846a82cb9052d7b4750a43a26a5c3e86. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T13:55:53Z), 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/TCAJG2599470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d3b6cc938545913cb423e342aca5c48908b59009ac4f3bf054630b927e8b87. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/TCAJJ2556336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247d589717b42ad33c5d6b8032789179d754cde689a25ec57084d68548bcac01. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:50:51Z), 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/TCAJP2541319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed6184e51cf7bdbc988c68a5981372333f631e9c1f1cfe681d211ebdbdb95d1. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/TCAJZ2577260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8499735adec366e6b30bee181fcd862a24981f4e8e8545883a2157f1409ac017. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:41:17Z), 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/QT65W2563914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe020df814a809b563d11486c54c1e1cfdeaead7319e3f959d8235eafda598168. 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/QT65Z2535074.