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 0xcaf7ec85b692dd09f06d16074ec8bbba2e6d627ce011b67b5e411369d8d37b7b. 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/60041400-5508-4c31-9380-1528dc0580b9.json and https://artists.proofprofile.net/proofs/artist/60041400-5508-4c31-9380-1528dc0580b9.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 0x93288ecce511cd372653bb92b14bf02bf084a2ba062d2d3e61d6e9f252ae296b. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/USHM21231029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f50d79146532bbad9d984d2aeead0d6c20e9483c0eb4eca89589bed0dbb60ff. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/USHM21231030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8254389014543c29a9adc903a9fb64c31bdf3a14cc7bb61e44ae19ab41dc5753. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:32:44Z), 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/USCGH1302114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf4dc80cfaaaf9b0d1a064f17240ff7f354f9ac697252d89ec9b52f6c814bec. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/USCGH1302115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82dde4f060184deb542c3591355312f255d8235d633d7b0ce64061c271fe01d. 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/USCGH1302120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff3fe73e0795fb59edea0dafd68d75cf99bb5693b12355e22ea4827a2964899. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:53:56Z), 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/USCGH1302122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4312cb3c7e7562396cdef3e6424f89ea4dcb2c03810883a96947b8a13f0b808. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:54:06Z), 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/USHM91614094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31464e1fa411938267cbb856b48e8b9f911bce9db80a9f42fce991b030f7dd8a. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/USHM91614096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355a104b92959ea7e402c34d399453708a57943608006d993424a17a5fa5b56b. 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/USCGJ1791587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2105fa4fa31df661e50a301f4d87da1fcd9f94c81b9845f01a10bef9f9a6c85f. 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/USCGJ1791594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e28745c94f7044c5db01a9a75bf1929ce6839ae75cc9fb1fbba0b08316fdea8. 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/USDY41748381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d30ff03a7ca8e8b940e75a54adf67ed4242a61462aa9bf97a4f8db6aecf2ce. 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/USDY41748385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd2dba71852fdbf2e0877d956ef23fb7c7c90e95b4d82320ed11353b79bc50b. Chain 2 (Bitcoin): anchored in block 958660 (2026-07-19T04:21:53Z), 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/USDY41748391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a83dfcb722d8715d8f81a311290500bb8046b897ad95c07a07f72fa74cd5b8. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T04:14:29Z), 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/USHM91870793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c31132f8c85224ead78081aa25dc3c6bc3c7c08991f03da010aca8dad2b437c. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USHM91870795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa741fc1b71a01ca1edc3c6044f7d685df595d93c01f815ec31a50ce5b554a8bb. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:57:57Z), 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/USHM91870797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c820095cab998d78021de3b32e64aab83ed454ada30709640ad8cafc7114fd. 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/USHM91870798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a537151ced283fe881f5c19498bc7c090437be92b634e3e042545bfde30cd76. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QMD3Y2200241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0cb624baeac26d852fbd1fb47521e03e978bf10961eb0ccdfafa64e39744eb6. 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/QMD3Y2200243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9157f0f63580d2dbdcf2339b10f37449c636f2ad6bba9f0be1716674f85445. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QMD3Y2200244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e27a29a71ec1b191fd52c3f7f6732feba705ca6f164fa0ad6581ac0a392beef. 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/QMD3Y2200249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee191eaa0512d57a59553e6303463130611e8f44d25c64d0c65c1e1d770e21ef. 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/QMD3Y2200250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f0ee30422cb90a11b04765cd416da1635a8aa67d4b60cd7dc60b546bf116e8. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QMD3Y2200251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25268acb607f61f772910ddf0788f669b039e21d9a2b3b096a3b1e86963b2dd. 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/QMD3Y2200252.