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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea93ccfb6ea0cb17aaa669bc00e00e98ebb3bae986c7dbbe4f573a2b4247492c. 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/31568f0e-a2ea-4251-b3e8-688c3ae79d98.json and https://artists.proofprofile.net/proofs/artist/31568f0e-a2ea-4251-b3e8-688c3ae79d98.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4788d5591550d21f516db723db140d728cbfcbbbc2752eb43c379ea74701b1ee. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USHM21063520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a3d19a0059516d8a6072103a8636ba61bb90d1969ef42d807215ff4e01857a. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/USCGH1224714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8782f4c474055fb943ea192aef5d0046fbc603837057ed2d20e9680aaed4929. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/USCGH1224719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ce84c1afc06d9916eedf4fb65df3597b0b1988e43899b48208c0c6815598fa. 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/USCGJ1540104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7531a5f24571c8d44175ca91d9a4fafbbf60645d434b318f3dc1beb13a3eb82b. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/USCGJ1540105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed5a19e9ab38eab5d1e0e133c6ab11f7df96fbf22bf0143b0d1aa38c4b9a7c4. 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/USCGJ1540107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9181923b4fca2f4949bb2314a9329b2aecfe236a531009505549c86d49cc5f1e. 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/USCGJ1540108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f021fb28103dd2210159b864a9f43eac6a215c2439c8314396e81d3748eae9. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/USCGJ1540109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e763b5a5a3ef2d740cec00023e56425383a6b929c5320f2fd773e5d7ce00ae. Chain 2 (Bitcoin): anchored in block 956775 (2026-07-05T10:41:06Z), 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/USCGH1695613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0378779e4364bca12a1ab0f460758a6ba17f87c0d4c6996c17820eafc90e8519. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/USDY41847570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadafb4c39825e8cfa75b0f83346f4f1256e9f078f09b6187038e7bd899e952b6. 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/USCGJ2051483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a2d8d831a7669d013f561d6dd7aa16027cb77d0151c4b73a3d2da39b91982f. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/QZNJW2195325.
Keep Your Friends Close, I'll Always With Mine
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4789df90a3cb568e985443f4e779ab9818ee641887560bf8d0e4e3a9d2feb17. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/USCGH1224716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07772c2d8bbd96d8ffe747b2e29271fded5a7a624de7a64bddd40e6b250ba566. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/USCGH2246528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e813deebfc21942d7a177cb646eb295a388beecb212aefa27346402f73a4172. 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/USX9P1348714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a2d8d831a7669d013f561d6dd7aa16027cb77d0151c4b73a3d2da39b91982f. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZNJW2195325.
Take Care Of Yourself (Abstract Version)
Take Care Of Yourself - Abstract Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f1e15c5d294a8c637df0a9310c404f5e5b8edeb0d4581f94c5b53a53c2e0fcc. 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/QZTB62261501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6eb6b682c1f5d9a8911ef38aac8ed2ff455d127cc34cf2f73140998884c33ef. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/QZES52308858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb82c75b6f26856afc2b8a837dc8f2e2c3ba3d57897d3bfe0b5757bad04819e7. 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/QZHN32356194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f30a5891ae5772a8adb5f84e794b37ea1796838cc8119a9c76570937c0593ea. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/GBWUL2487110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0391cbc9f09b6d90dc842ff2bf9c543d14fffa26ff335866ffee9d779bd7dc. 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/QZWDE2431997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7833c9dfa1081f1792d8579aabeb1259e8e03f270ec0a7113623df305e0bf639. 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/QZWV32454161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce0a224337a0375e3b39f20a30999d7e969c2c0224a1156b7a9334769effa84. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZZEC2424381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963c429e3989888168fe24e31731401efb2774f65ea2505adc10d300e0d4b691. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZZEB2405280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2505155f5cff676c5ba17d1989e0e1a3fc99851ebdd8e7df9d38fd1b77dff92. 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/QZTV32572266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2505155f5cff676c5ba17d1989e0e1a3fc99851ebdd8e7df9d38fd1b77dff92. 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/QZTV32572266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c6fd3529edf53ee830c2a9820f6cb400c2da2f7795bff2fd7fa6c620069f2ca. 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/USCGJ1540102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb84c0c6ff235840363b9353cd75f4c2357e6d9648af4d186917f6f3839d872b. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/USCGJ1540103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ce84c1afc06d9916eedf4fb65df3597b0b1988e43899b48208c0c6815598fa. 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/USCGJ1540104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7531a5f24571c8d44175ca91d9a4fafbbf60645d434b318f3dc1beb13a3eb82b. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/USCGJ1540105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939870faf53e9ecf9502119c4d5529d82a69ececed9f0c98f5ff572da15d662c. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/USCGJ1540106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed5a19e9ab38eab5d1e0e133c6ab11f7df96fbf22bf0143b0d1aa38c4b9a7c4. 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/USCGJ1540107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9181923b4fca2f4949bb2314a9329b2aecfe236a531009505549c86d49cc5f1e. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/USCGJ1540108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f021fb28103dd2210159b864a9f43eac6a215c2439c8314396e81d3748eae9. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/USCGJ1540109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e763b5a5a3ef2d740cec00023e56425383a6b929c5320f2fd773e5d7ce00ae. 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/USCGH1695613.