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 0xdcb3a40a4212af9242e493eb89f1a38c6fe1f2e8d4528e0238d7d32a545ee08e. 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/36bf9e70-79c0-494e-a52e-2c36d286cb0d.json and https://artists.proofprofile.net/proofs/artist/36bf9e70-79c0-494e-a52e-2c36d286cb0d.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 0x305c8d205c85385eb9eed2e85328aa325c5e866331eb731849380db2a613c52b. 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/UKG2P2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e442e6f782e625fa96b3eca5148cbca896aa5e1db52c61b27b3ff186f656c9. 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/CA5KR2270168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281792f3c3a9bc30686f8d0b2dfccbd2ed5412d3b79960f49748622881239de3. 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/CA5KR2303866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557019049356c337d3346e07c1ea8404610bf843119f02cd00cb4176fba9aa83. 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/CA5KR2303869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef0e42a73b4eb01f9da2d5caeaf9d10b1686b0f28dbc0b653d38579683bffc6. 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/CA5KR2303870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a4cf3997f335ea9356178fae803baedf50ece3c768073bc78e9d59cf3d5aeb. 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/CA5KR2296235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969648abfac1165e31545856949001a3a91b5505a4bdb7dff99584d0e9e2f9bb. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/CA5KR2286457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99737cf48a48e5ec9b9fcd9449765498abe9233524095c63cb25256dc6388f04. 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/GBKQU2446223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557019049356c337d3346e07c1ea8404610bf843119f02cd00cb4176fba9aa83. 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/CA5KR2303869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a4cf3997f335ea9356178fae803baedf50ece3c768073bc78e9d59cf3d5aeb. 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/CA5KR2296235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969648abfac1165e31545856949001a3a91b5505a4bdb7dff99584d0e9e2f9bb. 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/CA5KR2286457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e442e6f782e625fa96b3eca5148cbca896aa5e1db52c61b27b3ff186f656c9. 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/CA5KR2270168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7745e0c19e3323cb3bfd20b8f7192da5dc144bdde660b4f8e06b6f6c3c57fa3. 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/CA5KR2250639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93bedbc94478a11574e951ac995463549379a9b7d30a26cc8c111242c6bb8ea2. 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/QM5LC2200095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dcd7ec597edca0ec7cf0cfb087b1572c4d08e32f3785434968738ad1791c1c9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA6D22100837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004058294b4b57fe081e31d336b4735427f9f9706952e8b1615ee60000609d13. 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/GBEWA2103481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4deed1ae7246c5dd5a3a5b1343288d74854da059373134c48f95e24be2fd57e6. 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/GB2LD2110152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb12d6ab6b5cd7bd231d1a52c935f0ad4eb31df2f8b87f81fdf387773e45f63c. 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/CA5KR2117796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe81de03f9b7f955188bb1d22da0cca2f41e50deb59ed9d1c92c42e98f3d3d7c. 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/CA5KR2104881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaacdb56f2c2e5064d76606554c97c6ecef5103f98602f6d5c5b75c4b87b9f4c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QMD7U2002032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc390e3a1bda91667c37e911dcc1d8e9b7d722fc5d09252ebe13da8f14a705945. 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/GBUM92100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de6ce37c31da6aa58fb2561ee2afa86649590e8ed3e7114c102cc81c79d96b4. 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/GBUM92400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d40d6963058b7aff435aaa88649e022115e5774fb1dfbfe71dc1774c99300a. 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/USA2P1928866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe81de03f9b7f955188bb1d22da0cca2f41e50deb59ed9d1c92c42e98f3d3d7c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CA5KR2104881.