1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x387c872fbf9aa94bd49ba015e3b0acf63dfdd020b4a77bedf2383a55e830607d. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/32de1f54-322e-46cd-b97a-5a36dde66ab3.json and https://artists.proofprofile.net/proofs/artist/32de1f54-322e-46cd-b97a-5a36dde66ab3.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 → block OTSBitcoinBlock must exist at that height 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 0x601bc0ef0b248d5710124e53de9491c29588a2ed24f355ddbf3c3dffc2fe0932. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USGZ21349569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d51a39783860d13a67c56f8e17a77bbc9a2b346876875832bac180d96cb317e. 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/USGZ21349572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba209774b869be167d0cc58b34cf8c1eef2bebbd7cdb0ca26caf511df9784cd8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USHM80444677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4459b89355060728aa7f52ddd0e8b66d85cb82a228d54b201dacc053dec7344f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBCTF0900027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e4efa34995d6022be6d21f15e41ac6d3b0fdf2258d62041d1c1a81d0d4f9a2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBCTF0900031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da2e65df274eb29ab62fef66594534203713237d50740258c8fd3061c301004. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBCTF0900034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86593e87f44414d73b6daed64a85c8ee272924b6ad56eb2ebcaa06065aca90c9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBCTF0600045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57835c4fdb631bf26319a026cd89149dce87f9ac9d3d73ee38bdcd64b0d421f. 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/USDBB0610495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155e260ad30ba750299672d6ac88e857fbb8ceee877c7e129e9added6508ba41. 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/USDBB0610496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf9b236a64c26c6fd27ee142c019ce5079473e6a43ef8023310a594f20e2952. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USDBB0600975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3859e923bcb50e8f8dfd214212ac8c7bffeb0599c17dc121c61e153f8f01c7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USDBB0605931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539da052a1a0a90ea0e07a6db7136985112997fec4066bc3dce903c6d72e1022. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USDBB0601559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb583193f40e04c913a256fe42c1975e31a2f7cbd19e73ba12a97855f16807cf. 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/USDBB0610498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbeee3e91c437fbc4692c6d4dbe5277c350532c03e8a39b0da557ad4e2a2db91. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USDBB0607283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c14d540b8c073651377d34da4b9150a18dfa4e2178a3f2f416ac0674eba9b7f. 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/USDBB0610499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0b17aecae3740f83fb473d4526c0334eb36cdb414602ccee7d6603b75aa757. 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/USZZR0810108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c732b8dc1f90c06f15d30bcfee69fa50cbb1601dea6123f8fd8ed9ee6b446f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USZZR0810111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecece6b6eea87db93a473cc2717b6b15a88b0a671596a04c59b2a290aa4abc4f. 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/USZZR0810113.