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 0xc78d16afcf3155f7bc0c33cb82174330166630b7a4754c2438f0f84e759bd04c. 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/8755f1c9-b629-4615-bda0-12b912c3aed2.json and https://artists.proofprofile.net/proofs/artist/8755f1c9-b629-4615-bda0-12b912c3aed2.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 0x2a87b384f2eccc899691f6223ca7bb86c44d7632d68b58c028c124d2e503bc2b. 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/ARTWQ1300288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08f4be0aec125646b6d17709f45eaff5d4d2b5aa052d1dafe442bc921db3f05. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/ARTWQ2000313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7779907cd9d8f5d09164655e47eaf14195e3b4e4488d1b4fe863dad4ec8766a6. 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/ARTWQ1600416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8214afba983b18022431b92bbd2c1a137b84202d5172bd1cbf92b1705d4deb. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/ARTWQ1600417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e9c947ab2d7c2a8b7a25402c6cc6c809df2f903aeb00b37f8b2eab2bfea6a3. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/ARTWQ1600418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6cd36e90e4d8fa698606fbf26b124848fbbf6be6702f257bab57ec960b01bb1. 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/ARTWQ1600419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500aab87fefa0bcf3740a7bfdace44b62509ffb1175a318f2a672ac55a4a5ce0. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/ARTWQ1600420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8940043844fba3c637ff4e8b3e8af1f435a1caac8b14e4fc0125b23bc5f4291. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ARTWQ1600421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76897b0b177deaea9be48a55f2bf37cac86299e9253025ba74992f6896be810e. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ARTWQ1600422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa112670777d590f28d8dacca3fa9658ab2300e93856383f32ff15ea32b86d9. 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/ARTWQ1600423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f9939ef470158f4121a2d3153a76d26bc2e60e27f5949c777e0f565cd8b8f4. 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/ARTWQ1600424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c6d4fa2db7ac941061ffc6e52dbfae5ab1b5483cd138376c79757917283a61. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:05:23Z), 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/ARTWQ1600426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd90d12ad617d906cf684cd5f383e2b54f39bedb512b021d961f7d5ccead910c. 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/ARTWQ1600427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce566537467e5e007ecd83a3b1f24f6de1133fca37d7b037c6c2a236f9860cec. 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/ARTWQ1600429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea5e90320e612d3cbfc6d1780cd04f5461c934cff2b84eadac2c6bd503f19fa. 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/ARTWQ1600430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0deef2375221ce86d0f522d1ca19aabff07875d681c6e50504b7fbc9d307cf07. 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/ARTWQ1600431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd752b60e399cdc27c7c5ce99f63f8b98e8dd79566086f09cb487fad1db6545f4. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/ARTWQ1600432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f798125a186c276ad1c3062eba67d6e47165c4243d6e5f25c92e7fd6f1c729. 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/ARTWQ1600433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd235cdeadae6bb77bf48c4fd69ddda63817455fcba6bd68a720aff9a647bda. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ARTWQ1600434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5094f9a356d97dbfed616db1e58c433aa44fd536cbd99c8d8cabb2298380a6bd. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/ARTWQ1600435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564068e0037ed6d60d3559f3ae4bd783bd94cce73073e5699b17e582596a582c. 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/ARTWQ1600438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c50bfcb5c0a13c0f3f935120a0861ba1506d956f76c9f0a7f664ce191ac2e6. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:06:46Z), 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/ARTWQ1600439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da1b8f7e7db6cfa8bfe2d5ba9a622063be7fcf75557715c091e4ad404fc167c. 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/ARTWQ1600441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bcb8e197c3bff00ed0bb56f28b2bb6b7c2897f48a3105948efcd15879edd6d4. 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/ARTWQ1600442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411f4eab6820bc06125bf7bc22044f6b88e4c717560b781be7dd2ff8ea50be70. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T13:43:28Z), 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/ARTWQ1600443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50db188598ca646f9157bd0fc9d643a8ee51405b62b80cf25a9ab29c56fd101d. 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/ARTWQ1600444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb96ad1098f26befde271102e5c8a6ab795f7b42f791181f375ff880ce0d477. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T14:38:01Z), 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/ARTWQ1600448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45bdcac33057a0cea47e7916a89ab67bccef01625197063cc6fa3d656fff355. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/ARTWQ1600449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02622b0fa8e53aa6fb509b395e0c7dcb69e57a029db0dc52061648bffddd6e41. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:33:48Z), 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/ARHXW2100762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b3c064f3526e6948d92f81178cb42bcdb586e34e8765b15b406f90184d84cf. 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/ARHXW2100769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b41a7cf9986fc9844f201485ffd30793dd4cabef95eccbbe52b7f6354febb9. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:46:49Z), 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/ARHXW2100771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2099e84010995911a8684b8d1d3eddbe070ddc12633175d936b0eace87ba288e. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/ARHXW2100770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d08cf77ea46ab6b2e96032d7961aa3cd29332e1eb311318395fd88bad36252. 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/ARHXW2100772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e89db8570169dd616533c556505b7282b9d4f3c882c5c660ebffd011b2162c. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/ARTWQ1600465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c5ea9312eac1a8fe5c36e1c6e60f82891b25f57eed45dcc1019902d5604e39. 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/ARTWQ1600466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d31bd766b52f69238f6503fd68ff14c61688e896e29d35647504b96d7f16b9. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/ARTWQ1600467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b2ad8bf29eb10bed0fd4dd2089493573cb97c7cb42b99af28112cb2baf11de. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/ARHXW2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855b8356ea1b94c3452374132ebf42eb426964a9e7b3d3de715935ae9afb42b8. 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/ARHXW2103036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f642e048548d1162e6642b275b8bd2a51a1a697b81e9024b8bdb5fde73c358f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ARHXW2203166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6343565133ab14fb642a8e54a42d0e8eb9fc9c6d4f9e6253cc7e0a02fb02780b. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/ARHXW2402074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5571040ac83eb5607e7e313b7275ea0f811b5410f267cb31f267b2ef3c4854a8. 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/QMDA62519799.