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 0x93306dc12d092cc87feb23603f82a1aebc16b5b6863f658d2ce50163222b9b48. 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/e7dcc230-5500-41a4-9df6-71476b32a5eb.json and https://artists.proofprofile.net/proofs/artist/e7dcc230-5500-41a4-9df6-71476b32a5eb.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 0xbe4a16f4dc820fa254fb0cc1dfeff0ac767dbd43558232aad03a23a7da5ca736. 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/USHM81431264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df284f66d02dba45de96810076dbac3398691c109104e46f34f735bbb74d3e6. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/USCGH1521294.
Hartz (Celtic Metal) [feat. Dracovallis]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0093e6913427fba122c309776d5bf266455f4a5db52197a3a2e4109310b696d3. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:01:39Z), 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/USCGH1521297.
The Drunken Leprechaun (Celtic Metal) [feat. Dracovallis]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2a88bd274822b972e0e2b7cdb9a6223ae89be0ef159e8ba632c4f671b74efc. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:54:11Z), 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/USCGH1521298.
Land of the Brave (Celtic Metal) [feat. Dracovallis]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ceb1acdd280722fcf67460e2edf10ce008d7c1e47a0d9efc2d892816c5408b7. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/USCGH1521299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4e5673cd99b8fcc2161e6e1bc00d114c16b27dbe2366ae28d8ea6785ddd310. 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/USCGH1574165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe504402f94514ff88e89c36a6912b78d0e158a17d3bdec7e57a61f2dc3fdbcf4. Chain 2 (Bitcoin): anchored in block 957653 (2026-07-12T04:35:02Z), 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/USCGH1574166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0e960f4c3f4216483c90ebb19cef182c043124bce51838e6484b1bbc29d08b. 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/USCGH1574167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2644b35319d5d8c927f85ba33fb609f412ef0d15074ea1486d1104a448cfec. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/USCGH1574168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b41520f320d1451145f41ad9fa90e73ae7457f9b13f211fe2e4a71b6d8b49dd. 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/USCGH1574172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82b7b5e9377a457a848aba9e12f8d1616fd62c8e967ad72c78bcefddb76c3d5. 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/USCGH1574174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4a2ae9d3390fc3f000bc84e7584233390408ddd80db0bad8c194acef524de8. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZES81825026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3115be77d74347614217c8434b457142b4d02d8d3bcac08d52589c70dfd0b0e1. 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/QZES81825031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5639bdebf02f7d66a596027ec00653754ad33c9b97d9969a36cafa390570cf4. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZES81825032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6f8c04e9e7766a702a4176150961f21e936e304c4527e7b79fe88637706c24. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZES81825034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c59c8a6a1144ad4e1d7e56e276c6614ef1a44f56e90935e5ab2c1a958f6dd63. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZES81825036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e23b030b70e52e49f0fb58a30d13d7ba9985567336bcda76f837a291e68f40c. 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/QZES81825037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a546675fa649a13b40314db1312fc909db2650044e62eb260aeb92e8fa6890d. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZES81825038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471d95d8f66fbee9f147d044cdf967b4d39b3191c0620762160e7bd4b3310104. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T07:58:27Z), 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/QZES81825041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f554ec61b93aefb376f6b361e2c76f32dbb50793e6fb2591a0b5614d0b6608. Chain 2 (Bitcoin): anchored in block 957658 (2026-07-12T05:03:28Z), 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/QZHNA2056309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818c9a12e74d3f4d8aa0719d92e16e450591b10e3dc81950d90925cfc1097de2. 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/QZPLS2198208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad63b3f0593e94f1adba051be0ffefd4daddcb6f9b021b2e6bc0a23a37ed921. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZRP42156214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3c63cf5b81f9bfeda5582e10adf2fd2a7198a76e6ac26b01cee683829ef0e3. 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/QZRP42156215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x439b0ecd22b19b241c4f0903ef1fcb6e021bb4c5c479da88107139a8e9ecfe20. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZRP42156216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649d0b1dfdaff4555da5bd263e40c194e4ea73a51a81c5fef58412ac07b9e9aa. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZRP42156217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012519bac87b1f8e306e08a9e9c9b14862ddbc81ebdbfbea609d4f32dff8bbb1. 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/QZRP42156218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d292b041e2135ad64211c6b55c4cc7b808afa44381eb99570b10760705a575. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZRP42156219.