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 0xcfca6eedb1a26a9f47d4aa3a593858d2ed1926a49a0ea6146ea2c8edbfd023f3. 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/2b5e4bfb-c860-4501-aa55-ee26b631eac4.json and https://artists.proofprofile.net/proofs/artist/2b5e4bfb-c860-4501-aa55-ee26b631eac4.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 0x9960e8a3784e385378d16406b4e1e8b760f3e494da45beeef3098b7d7f3c307a. 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/USHM90880553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416f2a6762e040ba1916e0ca4bcb8ebfb6a2af4ecbb8dc163b123dfe4c2c6654. 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/USHM90880556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60ad5d05efb215ea852ca1c816567d2a1e6f25edb859a52393acad400538bf9. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/BGA471100095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe936006fa8b83764219e9b07ba7b99d59af65ca6977a64b935327d8feb979393. 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/BGA471100098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0809baa812d2859512bc2b7b9beb8d068337fd1d026deff97207078455a87e. Chain 2 (Bitcoin): anchored in block 958535 (2026-07-18T09:42:49Z), 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/BGA471100099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6136b3d7cb7d0957c1a234a895daba835e0406319a6ad49392aec5337f745630. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/BGA471100100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1dbf9898c2d894110951153a7274d7a3acc0719f783e3a55dd7687516e367a. 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/BGA471100101.
Night Walk on the Beach - Original Chillout Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef26f93d56862998eef625cf7c6e4680d4965786436e1ae5dea240b221627c00. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/US83Z1330628.
Endless Beach Sunset - Original Chillout Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a45692c2618342739ee79015a3242b1bb85f194b5c90939ae596a1d333a2c7b. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/US83Z1330629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1e127446165ff1bcce5dbb0c63c5c4c845077642bfcef1953167c663b6ef43. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/US83Z1476801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0b2c52680866d05394800eaad6e889daef883086a73435b9b4ba73cad44f5a. 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/BGA471906157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5412560c51ec5ce810fb070342466563c301264d59cc2fece7275012b06708. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/BGA471906158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e49d86929fb1a759877e494add3ccdb1180badc754afab018e3eaa6e61e23a. 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/BGA471906160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccfc59e0ff8305216452556cbed9508ee21a5f604f9bce3afbb533cbae86ecd2. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/BGA472000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30791b7cd458b679998b03b87ed30425fc8140a59f7aaa3af39f1466c0fa5d7. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/BGA472000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab845874f22aaffa224184d134f6cc9296885f2a8e851f9384e7041faf52e9c. 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/BGA472000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee433865849f89508c41b5e2129c11babec3f58c12798e5d85fc3b17758b049. 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/BGA472000027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20df17c32a81b6017eff19aa23a3f1144b405ef89b0f1fd015f19baac616cc88. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/BGA472000028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f6b7b2ffd52eac80cd1b9e36c6e73bea85d6f2d34e514c5ec7a72b751dbc24c. 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/BGA472000029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b19f4519271dee0410c2db785aa0786508db5d62a212263d3bbcfc7e4864f2. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/BGA472000031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c20ae56768f9a92a3ef1997e7186c45e92778e13a8d941c62ce00e70bac5e45. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/BGA472000032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a937c7faf1d71338efe4157312c986bdf82b22738c03789d287b23f35c56c0. 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/BGA472100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff68e4c10368fa9f1942da116710e8f3fb40c758c05281d82d972f8af59c55a. 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/BGA472100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55e85afb56a673ee83660f3ee5b99e05eb20af5bdd6de7c82912aa4eef0d892. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/BGA472100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7fc9137c7b0f2b455a1f338954cb080a896510b6522130e8af98a7679e27661. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/BGA472100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14f00ac8da44fffa71a1057d1f17d11d99528a2c5e54871e9557ad1b459c6cb. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/BGA472100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6260e4979dbb0aba6a49ecf3cff22550653ce2ed858e58a20feb3fe3b1306f. 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/BGA472200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa80d2ea176974ef17778a258e72bd7fa73c14c881e4b8289ba72b7841f6dedc. 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/BGA472200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4abe40e1b322325a545e54ea1afdcc5407debf3008d314801b7c19b1e0ffc6b. 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/BGA472200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf236da5c6a141d2db2af9d28237c6827d2d1e3c2200c7446386761c5a3fc6fa. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/BGA472200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1afdfb12196f57e547633d14ae24f1b8d75012f37d923e719297ed10d50a448d. 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/BGA472200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730ade6f0b1973aaf85fbcb18183feda52c2b6a901dfbfb76299138d574eee47. 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/BGA472200032.