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 0x6204703855f1357a2cbd150c13a507bcbc343c5ca870d4ada024a81b658b52a1. 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/8fe44715-b6bf-4977-9824-153868b5735a.json and https://artists.proofprofile.net/proofs/artist/8fe44715-b6bf-4977-9824-153868b5735a.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 0x00a14da3a82c1bdfc741082478223085caa87149551fa78c3cb1c4f60ada7df9. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USUYG1113841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9c9bd383ebd3197bd2b7f620341eb1e115486ba04ce8c7e55a61038a3bfc67. 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/USUYG1117282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f81ae1c68c0e2e0308618ca0b2bde43a07075226ffbc158add6bf28e9bf9f51. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USUYG1117285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1356053413a4edc0e3e3c7eb7b5aaa6bde9adb409493eaa33b436d47b18e2cdb. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USUYG1117286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494b6da82eefcff2ee442547ac019d772143fb3420376e30e45c8368ae0c9521. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USUYG1135629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb1ba4b82dc02bf9576741f73a7b845055320bb327f5abc6b2a43a38d07a7b0. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/USUYG1274227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0346ba3be017c0a1cb3fee6f8c0604c1d977cf8d2a54cef3e7b94e44d11391bf. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/USUYG1293791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc876778d55eede6a3cc18cbeaf9b45c6f17ee0141e793b83c7199f3d9e69a5. 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/USUYG1293793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcdceb04f8d9b703f82f6b8eae5bcfa639317dbd9ba738ea5ac8245afdc03a4e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USUYG1293794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4444ed1b76fbc5bd1f0b1de72336b0e04852f31bc980c5209d7b97cb2ff711. 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/USUYG1293797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ff2bcf192d2f5edfaac1fd119593693f69a18f2c67a29de487908b7b8f91fb. 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/USUYG1293799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbecd239c6b24abcd2b2cde62ad3baac2f24be5fd055e81ac582321c1f178bb6c. 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/USUYG1293800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c949d7d9c9713e70e0838e58fbebf1dceeb9e991822bf526f87ac3db0ef355. 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/USUYG1293801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c5ff3e033c7a728619c54a40512be860a1f1828c09ae6099935f4a8f200ca4. 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/USUYG1293803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5251d25d3f0428a74cdce6d378c802e572108c23e42661a966d98300a6b43bda. 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/USUYG1106731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aeb0414656485e2c53985c826bcd6b76778e65ca09eb3a5e28f8b87146b72de. 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/QZS652155315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3e62c3dca5e379b200c287b9c6a8f265194c7ca1e7192e467d40936b86addd. 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/QZKDK2204209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1963271adc35e97a4d01c055964d45c43080a2a1b8f7d1552b954fdfe5e40b6d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM42K2270717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc704dfca049301cce93cd8dc233ba6d703384958726adce725c1a5ea3463e3b5. 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/QM42K2252791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6005da5d3c200d0782c58447aa8ee38cecf81d093e818a76f5c634407bdd7c28. 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/QZKDK2212744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aeb0414656485e2c53985c826bcd6b76778e65ca09eb3a5e28f8b87146b72de. 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/QZS652155315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192262f820b1c58e4d4843f7155af98ecf2f95b63ad624d3b02876d8d54574e8. 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/QM42K2278958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb603d59819f9b315d9f2267475c9bb0c0e90a3c0cef8a89f191330f9856a0f. 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/QZS632136374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b58110611edac8983d4340389eb2c2fe2f392d5ce5b00ebda1bde217d626b9a. 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/QM42K2263367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4de64a45b42cb55d81d80289b52d676d03a4d5f3e3f3f298ea9cf56cc99327. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZKDK2277679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ff8abda2f16b9d777cca71402fbc3eaa96517e9dc6cf0688223dd3cb9ce6d4. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/QZKDK2246658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2a740f96967320bd464684471b3cb74dc0b7f334fc1f1c7263a634e2ab83a1. 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/QZKDK2250979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79fda4bd0e34532882c87522c6a3a8733db81b8c53d45f76642e6374ff64a39. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZMHK2336715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b04259f243ff8050f10bec3080d32be3c062f9904658862fd8b5d39b5915dd. 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/QZMHN2322319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf5d1d0a924129c2f674faac5919399dececb90eddd6818b8209bab64aa1eec. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:19:29Z), 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/QZMHK2345021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd61533a4ace17a80c230bba1280455d2ec0993cf3bb56bac6c30499fc17870. 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/QZMHP2375625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9363b3a7c50e86ab1aaa46298d60306dc5cc532fb37861e7dde8ed7a75224266. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:21:46Z), 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/QZS652300355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794a86f3f9f129c7779cf0d87e9cc895bb9db6fb2e49d2e1f190914c6a7d37b0. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/FR96X2448689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a5b44d3f21a62c7b48b96f9bace7abe37dd77c77175f6daa451e9a944276d3. 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/FR96X2448690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83beb449fb56f4e74bdbfa5f36d3f70d1c125a649c34245280a643d0bc942d02. 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/FR96X2448691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b0e0f40a430bd1e94ebd1fd99251fec7cc3eea19f6a9c74292c3f4aded81e7. 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/USYBL2001183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aca37bf0d9b13b484b3026f419f81fc994d7b319b9935e0f953f17c68709345. 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/QM6N21418394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d05c53e481c4592b68c70003f6f7f0ecaf38cd02a25fc80c33306c636c8e96. 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/QM4TX2477728.