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 0x8378c144b5d3636045f8bd3fed3844db7c8ecbffcdb0767dc19802290e2a85f1. 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/1a3bfc8f-b2e3-49d4-8d59-5a3c45a71f6e.json and https://artists.proofprofile.net/proofs/artist/1a3bfc8f-b2e3-49d4-8d59-5a3c45a71f6e.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 0xde140f6ac07697f7adbd57493b743cb555fff4f92cf0307d9e4d06dc8b17d89c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USDHM1419855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd451643a03a68733eb85bfc9f933c6951356c649b3b0b6870247a95e1c94cce6. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USDHM1419856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743a844a85f04ff1e87a4f3f8d1b36cfedf479fa7575630a48b63db682523d5d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USDHM1419857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e63681638afdde38625907e9a774be993051525f4ba909db574382e0b2a07a. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/USDHM1419861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2d4c0d85245815b532ab745ff32d24220d1207eca132cf2b2f29f4df84c3be. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/USDHM1717085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82111e75521821127f09c56f733d471eca4bf98d317c581fb28a59a58d37d2fc. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/USDHM1717088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c203791e9cb21e4de9199511761657b4461cadb7f5cddd18f6dbc2af5a92771. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/USDHM1717089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4f6dbe4cfbd7c7574ceac56c29b2b8e27630dfc15e965e0cad4263e9dc6e58. 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/USDHM1717096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b24542cb368ef0505225a3d254dfa7a0288e7dc9aa097df7cec39a7bbb7e40. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZGLS1955494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc5198121097b9b58934a4d4c585a92a012ccfe14f9f0a0700aa4f000bf9e03. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZHZ61900635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d7f56cd763aa33677849caaa39efc641c21c578791088b89410a61359eee75. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USUM72006221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9375ad61427513672e9cbd6266fffe3aeedcb3170476c6245c527e8cf1fd337. 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/USUM72008242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d30c425875014351a3a637c52dfe52cd5d547058b2ff22acb420ce7befa41b0. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/USUM72102323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd783e18e9fcce4761a8669ed332b43f68d91462dbf3a8cfb48ef32ef039a5192. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/USUM72003915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4946cd00c286ffe17e107e1615cabec388211b388f567b45adca9404139825. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/USUM72023185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87d0abd8bec5e988d690d72ea9091fbc763e70c0575895f367f24a2da415699. 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/USUM72211367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34065e302f1e996a97db54bb4ff11a12ea0f713451240fad9642b3ec4f93734. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USUM72215773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b312af55f3495a43003ebc6ee296e090b5413cf43259333ea5c4a23007cdd9. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USDHM2406396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1edb1029a4be00dc903450915dfdeecd8e50fda9a2b4605136aee9270601b0. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T11:11:28Z), 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/US7VG2582170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca516df0f5513225f44c85a55726eb6281486dacbe5f24a5f044480abe55fac4. 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/QZNJX2569676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc21ac7c068ce940a31e52ccca4da95d7d33615175b2bdb862514abffd8950b. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZNJX2585044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0693c53cd5ea82a9f34121d4d30690abb17b56181bb9d94607d318aa871c09. 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/QZNJY2306222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x772436d30ad92e108ce51c9ec53de199881c5700ac99307a61910623bf48b51e. 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/QZGLM2438211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863e20b4a46b689926731f49c971d26dcb6b05363fc5df5343fa0521157b9f35. 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/QT3EY2486181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5808292796c5300a3368658c37f78cb00a3bf676a9073751be65f3f42a1fff7d. 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/TCADD1718434.