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 0x2e4432e05361dbc27441929af0bd2cb88578723f0f3ac047bd1ce85c3e0b1f4e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/44032e2f-e9d8-4e24-9306-f0016adbffd5.json and https://artists.proofprofile.net/proofs/artist/44032e2f-e9d8-4e24-9306-f0016adbffd5.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 0x7a63b0db9489aad0bcd9eb40bb7d6d43fb9be6c1d62f546f47e8051a64a58477. 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/QZHN22100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb348181e8d87f6d820eec3acec766a059bf7d44b4a5522c41fdcc14928c435c6. 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/QZHN22000109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a7f43649990f3510d0cb0272bf687850cd5aea3aded7f13cf9ac92a4dc79f6. 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/QZHN22000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719f1a69b2fd9fef4f9032546d7eec1d87b5ded5a43fdbdd92f1a4134b9a519b. 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/QZHN22000112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1da38ac92f4dd6f4ccfb71e067a917e021fe291bd8ae0a831fe088cd2717d7e. 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/QZHN22000119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb348181e8d87f6d820eec3acec766a059bf7d44b4a5522c41fdcc14928c435c6. 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/QZHN22000109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309ef161782b3a5a0b968d64f81dd857516669f999c59fa7057d3ee4da5acd86. 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/QZHN22000121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794887fcd2c19fa0f687133be97c397b4856555984b5cc0c6ef9f8d70fb6aa60. 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/QZHN22000125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0c11e6a8d1fb6527b90e50ec07b73cbdb001b8cbe21bea5f3ca6d0e69bec80. 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/QZHN22000118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15cca5ce206cf76751008b6d573422804faf2aed1984e63e0da9dd4c1174d0e7. 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/QZHN22000117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83d8437083e097c2a2f1d21c51ff7320f93febf49b0e8ae6f36fbbdb81df773. 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/QZHN22000115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1df8c832e3ee6d6e46beaea66326d033cc7a41d7915861e90b71229023b6bfd. 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/QZHN22100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66081d14df278ee6b75efb18fe097e8339fc5dac833686c3b7f4e88d60c671cd. 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/QZHN22100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cc345348b4c6df918004001b3135b89f59060033c5f6c34ecd736efd71752d. 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/QZHN22100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac5e2e3c34d4046100882737c1ef73565a5ec2b67802712564cc500a7ed53af. 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/QZHN22100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3731a25c9ab88f169dced23a6d18186c932e93a82d55877d6f5eb6cb071e89c6. 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/QZHN22100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309ef161782b3a5a0b968d64f81dd857516669f999c59fa7057d3ee4da5acd86. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZHN22000121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd961a9066166d31e1b1f4bf218493510bb4ecbcc49919ab6c74d7360788367. 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/QZHN22100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8540c7aa78eb675056946f7ef227888fa19a448d2022740acc0c8123885695. 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/QZHN22100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cc345348b4c6df918004001b3135b89f59060033c5f6c34ecd736efd71752d. 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/QZHN22100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309ef161782b3a5a0b968d64f81dd857516669f999c59fa7057d3ee4da5acd86. 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/QZHN22000121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1da38ac92f4dd6f4ccfb71e067a917e021fe291bd8ae0a831fe088cd2717d7e. 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/QZHN22000119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d810f04fbe079d2ad294ccd6e550bafda66d6b33d27f16be99d646d2c27117. 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/AUMEV2270371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc97daca6630884b46218df1e47e49fccb148b693e59d583820922017d05d47d. 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/QZHN21900091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e42d7c1840338881b3697a579b277a89c37f27f7fae15efe92624ef522a11b. 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/QZHN21900084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53898d3f32d969a3c22f05538f679109d0920ffde8cebdab9496076e26400eb3. 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/QZHN21900085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87922a847791846415624eeb8129589a7b5a9105f37a52264fc707f31a2501c. 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/QZHN21900060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d45c088e162fffe90fac0d985238bfa2c44c8d10ef9f6ddef0df739ab03f7c. 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/QZHN21900034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f27af6470a8f80be207475c32c51e6da60a4cd7667bf1d43494cb59517e0ce. 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/QZHN21900048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78f5b7fbe9983076374b45ba7bae538dc7ff4a94d2e4d1e9a999eb3c7c538ef. 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/QZHN22000128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a41bd7a842067ec58ec38970f0ae185d94f17ac7fc8358a763bcdb5d2dddde. 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/QZHN22100026.