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 0xda67a98715db4641b2435b629ff1ab01cb0e7fd15f2a2c514147ae79392ee36c. 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/4efde7fe-83e6-4143-ae16-4726f7003c21.json and https://artists.proofprofile.net/proofs/artist/4efde7fe-83e6-4143-ae16-4726f7003c21.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 0x93ea045b9351d42d598023dd715f24cf13d25dbb91c23410418797d3fa7861a6. 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/ZAUM71900425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5792b2b74ed3b75963b08124d1680cf59b409809d6fec52969154bf940dd786. 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/ZAUM71900434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e68440fd3ac4674f911ada608ac1abc2f13ed6a0c06655fcaea4e6b3b769641. Chain 2 (Bitcoin): anchored in block 957699 (2026-07-12T11:51:06Z), 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/ZAUM71900437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8388346737810cdb4328081f7794a5226ad0b562dd055051ef628cb793a9f8a7. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/ZAUM71900438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a49c3b2b6fe2eead1523243b3331e7b85952d87302bdab6eed909eef251b2b. 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/ZAUM71900439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22c13b391719a74acd0885983e4c847cf6250544a90aa4ccd66b80ea8f16031. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:49:39Z), 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/ZAUM72001696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd81341fb8208e09a55f9ff74bd4dd849ba5aff5b93cbb18366dccdc36ce4de. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/ZAUM72001697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e759c54ff05aa4fd0a79c2b464af1e4396f8e296cb0975c4df9ec2c5f6ddfc. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:17:36Z), 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/ZAUM72001703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c6dda9142e0eb4dc50b310ac984c3a7d00825c3b7fa245e64a86f60ca1116f. Chain 2 (Bitcoin): anchored in block 957688 (2026-07-12T09:52:21Z), 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/ZAUM72001704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875e8e66a9e66045334e6e83410daae7cb21434d441d997aea58854ee1348a8d. Chain 2 (Bitcoin): anchored in block 957699 (2026-07-12T11:51:06Z), 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/ZAUM72001710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719a430364894bd8724f5fbc1821655cc1753701ba7474a1bc9d3ff279d5e71b. Chain 2 (Bitcoin): anchored in block 957695 (2026-07-12T11:16:12Z), 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/ZAUM72001711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3441e2cb7cd994b9911d828a26161ff7393476447f99d40db778164d38b6d94. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ZAUM72201607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d616c49f1ae0c85143949eded7eb88f434246d2e85e2130e1a3b6bb9d6a2b97. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:56:52Z), 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/ZAUM72201608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa09cd51e778f56ac1e565096ad605ce28658f5c83b4231a2b2bd1159f54d09f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:42:13Z), 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/ZAUM72201609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517a87313fdc3da95259f126908b7efee8f978a2f2bdd76a58d50b7014fb01c6. 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/ZAUM72201610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a20dcb18c84fd0c8bc14ce999bf576aae812f75a996103231b8eba511361d9. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ZAUM72201611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d468feca45d107fd0c56f4eb55569f2db366fe7e4882aa3e5152d04b79b18c1. 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/ZAUM72201612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8092ac371b533fc84fd31a72c7a7b3682e6da5f8edac66879c53e496854c525. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/ZAUM72201613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5bbe60ce080a8bc29eba83fe9276bf01986ce52b2a98460121495043895ee7. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T21:01:20Z), 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/ZAUM72201614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ab718e264ef7c7450b3a5ed0c035d53b2f7269f05904768d3652039d6abcb6. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/ZAUM72201615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b60babcbacfa298e9bdea93abc4398e86f3fbc1e12f60d26c3f997191baa1c8. Chain 2 (Bitcoin): anchored in block 957699 (2026-07-12T11:51:06Z), 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/ZAUM72201616.