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 0x3adbfeffaffeeb472ad0a8d74c7590b66ed19b7cdc186eded5afb03bec3263c3. 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/e548668f-cecb-40eb-970b-d1298456a5eb.json and https://artists.proofprofile.net/proofs/artist/e548668f-cecb-40eb-970b-d1298456a5eb.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 0xc59ab6ddfc34cbb0697f9caf15f13bb9fba7ace56edcdc71bff6fee638f60771. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM24S1921739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9e1cd7413f1f5fa5bc56c7015b92fc22bd29d0559d302f9bdb1983b8235944. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAEK1916155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e6984f4d804b81fd6f31b17dec545c76e1efc02f27659d5e88f8f1e5e4a9fb. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCAEK1916163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebba2eb875259bf3eeaa1e2367b190f6039437f04197ec7d9800384aad64099c. 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/TCAEK1916169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc27d78e59c2b608a6962b9bba947be8e0f7824abd682177b8e5de98d7690146. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:20:48Z), 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/TCAEK1916175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5430053110dc13944b11a35104126006b66fb3cf340cd6642bfd43dbecb995. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QM24S1926228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4267a7c164ae8ac064ca14d58ebcd6fb22df25b9ad91ef9bab7db2290b956dd. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QM24S1926229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e67b2550f86b36920e3fdea3ac529cc96b5130e41af3c4d82a3d2359b03483. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QM24S1926234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf209f7aeef685facc50d05a946826d7adeae7f4224788a5e58f378e81a2cf1de. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:07:54Z), 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/QM24S1926237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52c35d967c3fcdff3f57d4a29dec5b59ba608204c14ea60c8615720daca26c5. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QM24S1927697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d1b79ca66bf5f8f8c1d83e8659ff2d7a9d3a463ade323c1c55b10fbd25e3da. 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/QM24S2000236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4021a044dbe347b79c57cf44eb410ebf7ece415e6fdd4af061b1bb946cd7bf85. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM24S2000468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549ed533e384edea0b57600ea269beb0d4316f374797c39845d9496d82afc368. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/QM24S2002992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8630d0998c36f803113d2e4bd605a5fc28631acc6cfe213ef8e02e0073b617d9. 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/QM24S2002993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876f24c8398169c6f28a51c8923ad42dcee83527513128e3a118d515ae9ec0cf. 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/QM24S2002997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc6fb7220a2067ca023e02b2b40b76b8cfeb5116f8248828c97022ad420dd3d. 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/QM24S2002998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8f46442f93ce3c51f5a96784220da1c348ddd6e2e39c07a9d50b4dd06d8551. 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/QM24S2002999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b60b6db02e7300c384d7bdb242733c86dcae06357e2c6caaef040657f6765a3. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QM24S2003000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace57c4b6464079bf8163747b2b078761731140dd3e4afac2c7d437b06d48b56. 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/QM24S2003002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320dc6a813c8667e313143240015eec3d0590696292fa6306fef1b13b94e544a. 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/QM24S2003003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff65be870336bd553785ee89bcc4c8e3afbcf84fb7d2e9c22838f6f54aa7e861. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:25:38Z), 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/QM24S2003004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e4042947f8646f84c5b46ed87697ae5c45ecd37b15819faef0edbade5a4039. 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/QM24S2003005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179334cfb54c9b77b8c6005ce1d3b42b32bfb78afc17f2a9a6a3039182c25af8. 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/QM24S2003006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34703f05de30ba545e12f4135c9f4bfbf333285c4c9b2d9ac891e63622d3357. 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/QM24S2003007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d1b79ca66bf5f8f8c1d83e8659ff2d7a9d3a463ade323c1c55b10fbd25e3da. 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/QM24S2000236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6bc5a8fdc6015cebc58187dcf42f2c3205c704f160d7a1c73f65ee899e642b. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/QM24S1926235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c229d20f51c260885120214dc840bf3d483c9499180a7d0caaeddfc6c003860. 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/QM24S2001083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32dcccbb0e6afd6c70a312292619f189638e973a3d7bb6fbb7c768c35f349c6c. 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/QM24S2002139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc347b0c8d8bba241942cb42a45a764e7b771341473b03d1b4f5cba7b5c82c71. 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/QM24S2200599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98bd2c0286c95808422b5d474923b4d54acd41d585718819fadc5c2ea150dcfd. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QM24S2200598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdcf29967e4573f7d011440228844be81856e99bbceb2388cfbac7670b087a6a. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:00:37Z), 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/QM24S2200594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83706cd933a7cb1d97c55292113b30f97837b51c77bb875793f5550128d4b4d1. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:14:57Z), 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/QM24S2200586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a517e3546c819aa72e7179882f3d8c860d93e3385eb7770c63198cbadf51941. 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/QM24S2003020.