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 0xb495717f99055c5118c792e219a34daa936240b1346775cf91d889235da3fad2. 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/197f9ccc-300f-4311-ac2a-3c81b99a66c3.json and https://artists.proofprofile.net/proofs/artist/197f9ccc-300f-4311-ac2a-3c81b99a66c3.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 0x3b13de892dd08f3fd1c405b2d97198d15be66563af01716c664097f858567ff5. 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/CA5KR2479873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90d7236e3a95c29e86e4cec34fe6b4bb9ab1c1524cea037a79fb1b6698825a9. 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/GXC7T2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce880c9e52b60af8d40cba880c1472f2e6be6a8b322bd12206910294889a9d61. 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/QM4TX2448158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319badd2f78bc796af00bd17858de34fbaa36a7498e2a4fff9bb35a6f591a94d. 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/QM4TX2448159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4333589bbbe6ef20fc7e02ea323e468dd5cb4248454555f1f9fd79767795483a. 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/GBJAJ2400175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb8b36a2559ef0bc004b425aff3852cb392e39a74c288418511d66d418a8ddd. 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/GBJAJ2400174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23df9516e8a5aa7a1a202d78699dcf9e024e0630e7a2f8a84207c8e7a5b15b88. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ITA061302499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f8a182e27827a3aee1594ae5937f4a1837fc23b45a1b9c357f9bb7af002779. 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/ITA061302501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f43639d966c923479a021965a5b9c413af9d9c08f15501b660cdcf745319a7. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/ITA061302503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a789cce0de7546ff8acf493d6cea94dc8362df7ba4deb4c4b9d0d446e2e487d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBJX32360014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaab367e3ac9c04aaf7d6a5f160ab0fbd53d8fbf2d994fe4a0eb1f9aec4c586b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBJX32360015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9663c3a671367e389418c2e64e8dc4b11992c8a9215a4ed95956db5de89639f. 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/GBKQU2307640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd27b91e190d497c90a1733aa9c9096c2d81c4969d08b201367affac31af406e. 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/GBKQU2307641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b77603af28f47fed701afad24f53b84429c48c8f8aaa42e56334e60882d684. 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/GBKQU2307642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c80a82764939817e614a7b8af3dc942376f8fce33d2c858c067f52b7c888d5c. 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/ITA061302311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13cfaae99e66b320add37d6ddc037a6098e96eca77b4cb3ee8b9784b863e646a. 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/UKXN22207460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78dd0ae71e56fb59e66229b3ee44766a8a317b5a3f2c549c48a71f145f8741cc. 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/CA5KR0040291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc002f937007c0a249cc55d903a130d0ccc23b5102afaff14b5d87153a7362f41. 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/CA5KR0040292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dbfbeffdd58122b12664d51a9af818e32633d3aeb66947bb4904dede736cd16. 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/CA5KR0040290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336f69a607c90949c69016e71640768af14bec3686ad5f2cb3e6b19d5d4205c9. 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/CA5KR0040289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a1cde7c3846460f52003fed1acb9eeca0f4484db1ba594657e6d0433be98b7. 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/GX53U2055845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea6d6f806cdf10ebd6b59e634b2b42e5558f4eb1b3f34222004e39e71cf1a70. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GB8KE2160168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1dfac960855fdcad418cf1a765cb0003dbd235fc7da600741fd8fd1e5c585b7. 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/GBKQU2164610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd72924c8b50be3da140a58c07bb5c6daa3b08cf508c29c4c9587ea8084ab8b0. 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/CA5KR2142847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90d7236e3a95c29e86e4cec34fe6b4bb9ab1c1524cea037a79fb1b6698825a9. 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/GXC7T2400005.