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 0x06f38ac8e45d8793f80d062f77458a94a11f3a8b75be3cf5dfc014229971b249. 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/a0c8754c-c07d-4ccf-9be4-6d228741766b.json and https://artists.proofprofile.net/proofs/artist/a0c8754c-c07d-4ccf-9be4-6d228741766b.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 0x5081f011adbe31dc4d2a0b5ffbb646682319f15d37ad96852f4f2e280c54b646. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/USCGH2520186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6242306b435db279f1443689e57a7609bb42d3c24f1408cd56d768dd1530d59. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/USCGH2520189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb845e635dca8180106064559c59f53de43656a84eacc94b2df0fcd57da6ff676. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/USCGH2520192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36bc84e51dc83415c209df4b38bbe9a6c12fb07b082ded430a66b174fe9e2e69. 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/USCGH2520194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b48501fc342967833d1ac90094b4542321a599a129ff364425f45c2ee7a68c. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USCGH2520197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7abbb7bb8638c8f19693927ef273861eb4c0ffe5bfe2996af2fdb7e23df1ed7. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/USCGH2520198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942fe8195d1e842b8e5d95988f9aea0c1225643f2f5b34324f700cd1f81ad55b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USCGH2520199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1de57502944b5cbadc4ad610367a66bc1e503efb107627bdd656a9e9ac7f874. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/USCGH2520203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe984f2204d67308cf70799c5ee1fb2a048175a8893b063a0991dc16152c0567c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/USCGH2520204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf579c91e638d35ba68ec55c8eed0b90c183ec4a7ae0d3b8fc422b49e665144c2. 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/USCGH2520209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ece4204afe90c37fe1ed7294a8f95190f53627da9e97b295486c7ad3a34c2a2. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/USCGH2520217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab1ebd756d723ba1b5be48cb5add7da60bdeeb97ac0cce588909eee19776b63. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USCGH2520219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eae7d16d4c6cf9ed5ce7b2203abb4474ed46cc04823d20763b5e6bfd907aa4a. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USCGH2520220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc805206b4c97f51d98423b49daf82c52f4c6086efdd1a4a6f9e61b0d407dec75. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USCGH2566987.
Rain on a Thatched Roof in the Countryside
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c583abeca1f7ccbe9eb1b750651aafb6d0af8e1053927b89da41d88a9418c9. 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/USCGH2566989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e80a0c245e2854e81581b9b3f8876ea3acaf9ceeaac5c61c48c83dfca8b939. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USCGH2566990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4360b7af8b2d223b22b560864d1c644e4980eb71db0f24eceb52dc34fd0698e. 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/USCGH2566991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a029025f81a9505b1054c11b1f37409f7a168b4c25120def94eb856e5c1627. 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/USCGH2566992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93d2322d5efab2baa6972469230b3f1441538df6505e7d049f937372d97873a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:07:12Z), 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/USCGH2566993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216e3c3f7505a42eca1aedc88b5a2bb270556dedf696abec89dbdf05c798fd23. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USCGH2566995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589a00efe45daee0d0f3677177e3b03017cf67ab1b0e6029a05396ff36b08f9c. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/USCGH2566996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b717d469381e0993c1609e71d413fe9f3756937db304986b01a56e83b459425. 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/USCGH2566997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab837252cc10b36f912ea4540eb03f4c9e3e82bcff598efc2608bfdf7433bee8. 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/USCGH2566998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e011a5248d17f07781c487fc6559d18196db829a496dbf60623a3716822d05. 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/USCGH2567000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f81aab44b6fa910b49a369decfc02e45dded3cff3b6b40993691cbeb279f50. 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/USCGH2567002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d661fecbf8648ad09fe7c9c1efa0a696a1fae499553c05f2fb57610d6d4e73. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:05:03Z), 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/USCGH2567006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9676423e1106c308d2e08083c0cc5bd678c54324bd86bd2a1f0be9439b2d253e. 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/USCGH2567007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5adafb668f92af65d28c9ac7f0b627e9e0e6fb95ff46564a3c0de99f3f869c0f. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/USCGH2567008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d17af4768dfa36f8f2c39ac8b31fe1319046bdedad2d540b6910629c61b7ca. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/USCGH2567011.
Rain on the Riverbanks of a Quiet Stream
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4db00a1016c37884904272300ca1107d556f790812ed134ce89b725aef56fd. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:06:13Z), 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/USCGH2567013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6fba4573227e236edc5573728d8b819dde467998c7a8907d5f38e47ed1f36d. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/USCGH2567014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18a19adcdc10529cac5d89e1ca4e366032897ec11060a591b72274a570c9053. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/USCGH2567015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f84062c08c8292dd04543fba7dd5c9b7282f5f06e28d7ccce9a7301376dd46e. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/USCGH2567016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456ce19e891a35fd32a71303b6f4933c085547a6b281f6576713ab3dcd402f49. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USCGH2567017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0ea524dc58584412bfeb2e0a3548d7cbf3be0c1f2738e33344b591c96c53cf. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/USCGH2567019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc084ef4f3685b33570445fd121faf01274bddd5d6f96212f9fca646defadabb9. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/USCGH2567020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b77272f41349dadfa340cc1dc60c00c79837f8a389fbfbf1544bc86c4a47f39. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/USCGH2567021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865cde6fb65878ade05356b36dcb3990c4ae2d39fb9df595cf9fe33825881d40. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:38:00Z), 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/USCGH2567023.