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 0xec630b7574b8524dfd65ff465c5fb188d8497a38ab36f13f2096a8e2a4263c92. Chain 2 (Bitcoin): anchored in block 953701 (2026-06-14T22:16:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7718d51e-edb8-4da0-87a6-f89f0509dbf7.json and https://artists.proofprofile.net/proofs/artist/7718d51e-edb8-4da0-87a6-f89f0509dbf7.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 0x52d40a0a60c13b89a50fcc1284f19e5506a367200033ce41b6cdf1c4725c8628. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BXBRU1800130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad2adbcf8c8da0eb14048cc41f79445c9bda223b7683b289c3031bd9cb047b9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BXBRU1800131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2071cf58fefb86dfc0cffd21f9d2e25f39acb371736ee6b7be8d192efb98f7c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BXBRU1800132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0659685212d9ac3ce26d75c582c33b47d14815988c679b81251a911a996013d5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BXBRU1800137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb6c409f438ba283baa5d6d958146c4e0029a8e73c5dd2f41383da1b36272dd. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BXBRU1800141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd6bbc5fb96ee05424791df6662c9149d9b567f87889293eb9321430083d19d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BXBRU1800142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070200cc1efc4d28a2120d82e9a8875c921576973407e72bb0082ec4f161f636. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/BXBRU1800144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb0fb1dc295c643f8551731e29a6fb2a49c0dce1cd7455b07c30c83468424df. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BXBRU1800145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2dffe48570d11c921b69855060f96f7f0c426b6b0ae833a157e97d566c9be7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BXBRU1800147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea3a2abb8f9c24d01966072f8e92b1763cacc01d10360200d92f06981a32c69. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/BXBRU1800149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e0fb59fe3424dd64075dc743e9cf0207dbcfa43cdeb4d0e9e95535f6e5a2c3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHZ42003665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4f9a39e64e0adb9658c353e297515c91f223a4dc4d4dd9c947bd135ba07a00. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BXRJ92200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ea1f5a7e1f3b29bb874e50a3502e38c03b7f06438eafb6c62258410d741d82. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZNJZ2482793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53bae4e15fb5ff839b5b8ac69148decf51d1a9c2127245067e9a109df0d4c4f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZW9M2318238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263dec71c6a9cc566536799bcaf366496f3979f5bef83adda1e02eb1dfd048cf. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BX5UA2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b7568149b8017100dbcd5910bb80ac88ae5f079d8c9d58328d3dc763050466e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZNJX2041345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b0d43183cd7137ca2de18cc8c4df81e779c4b3f391b4295b939e5cc80ce94f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNJX2041350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d961eb7b7f5df36775aa1e13ae877dd162c6f4de052602adf23df70351033b0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BX5CZ2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628b9ddf5c72c9ff700d1e4cbfb64c81933bcf6dfdde67f5e31b986b8e18fd66. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BX5CZ2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe423e658d065bae82d60aabe43d85d92c0fcd3909079bc3f7fea9f03546f2ac3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BX5CZ1800032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e9ee5b525bd10b5017492eb355668f42fb44d36f97f4458e01bc6bfd9b9c56. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZ5AB1617046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908b8feb5c0c1b5a24c76ad0bcb84bbcf3c2429f666a11e5ff0c466c6e600a77. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTVM2356620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e300d3fbebf2999ee1682bff311c399884cfca06fa939445916ab8018756b63. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BX5UA2000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe423e658d065bae82d60aabe43d85d92c0fcd3909079bc3f7fea9f03546f2ac3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BX5CZ1800032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b6da0696e66c0dd521cae48bb6c30fa9798368fb339d5c627391aa1099e60a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US7VG1874279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e0ee59987d953566e131265bbdd73dfa5d2f58ee8194428101975f67d348ab. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CA0U32300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe737e81222083bd2bd37ed50e1bd872c4ccee82a58b75a26d001208c48f67044. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BCWA02100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d2431b1c413e4f88082b13805f8360ebc431f2b20c71e8acf7c9cda098f3c1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BCWA02100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73cd2989947a65062ffe24045359487bbabad514f19df83c363cbe7b24438982. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BCWA02100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfac231ce1fb9eb318489696920fd26ba7c3efc32218106b202bf245d7002b7b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BCWA02100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0dcba29670b80520e493c38116866d3dfaa3d1bf055f20d91fad833623eb21. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US7VG1791262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b93ef88b8824d703742ad56ed95b33a2c99d7eaaaa0d28d5e682d4b95f760ad. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BX5CZ1800026.