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 0xfc02734501c092c9c4f0c90c4f0c8a7a17c59e5b5fbc7b0387d2736ee1954534. 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/6b9aaf9a-1e87-45e3-b3db-3a5556e5ba8b.json and https://artists.proofprofile.net/proofs/artist/6b9aaf9a-1e87-45e3-b3db-3a5556e5ba8b.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 0x9b309fddf5cb580967d8ce45544a1f4268b69514842b98cff96214da3166743e. 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/QZW2R2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed415a682a9f845d034774d0b8dbc23f7bc193a5796224a165dc7b4a7b8e65f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZW2R2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f05586d6175cb3faadc2178f764e4fa86ecf5998511beca4ef80efa4b3f2c4. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:48:04Z), 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/QZW2R2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38979f74e43de773c971dd694766b596fb133274007ab2685c4cef35980e0a4. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZW2R2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b724dac2c06a50a07a883908b7ff02cbe47538fd0c082e69f0d59ed8e8e401. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZW2R2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f85a2258bbe566a5ccdafe9fa124ed4421dd7378334ab348dd24d1c511dbf9. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:06:05Z), 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/QZW2R2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2515608e0539fce2e1cf3a254d61687504ffd70b07f55e732135331073fca1. 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/QZW2R2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d3b332b4556ce8d9b01677304265f8576dd36f12659e5dbad95092792bc7fe. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZW2R2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094cb3cbac395391765ce7bba6f0618d5b572278531d336a770c3b5dbfacec38. 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/QZW2R2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37bd49c0eaa090a89de59f42f39efce5798e0f353837267fdcb08fa2c2e0b455. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZW2R2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb491e98f33c4996358d64cafab17577d35fa8f047c16671f3e594c00dce32b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZW2R2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bcc9afb54271fa1db878f1f56edb65175cb2d807c8edbe49e0e67202e7e2472. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:04:12Z), 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/QZW2R2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99d4201fa25c8e34804f72acdccc01bd0fce562b690a61cb9960d685f7fae01. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:09:16Z), 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/QZW2R2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64af9d2fb316e7fa58d8155672fabeef93a04d91b600fb21214618c24be3d78. 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/QZW2R2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04cbefb84308cd556fdeb4c5a55bb274ee9931a2235f283412b1edfad4a6f913. 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/QZW2R2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78b6000e412e8ec737a98522e5da4560f130dcd9deb80465dfb0951736fba72. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZW2R2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a57824270da39be61b1797bbc880d4f3dad07f332f36b27c2bec3c41042368. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZW2R2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515d1c57d5866c6964ea727305d01d51cd8a080412ba20d4d996bfbe521ccc3b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZW2R2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52aa93bac5c08296c14d42edd3a149a6ec8efc2251d4e1ba280f3dea12ac51d. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZW2R2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b56d831c91f3e6d8de1670f5f0cf90104cd5a5d11d7e51b59f1a003ab04cc8. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZW2R2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3bfcd70525bcfbdb3d9713b629ab05e115e59d29987b3a6b28c72e5e1aed05. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/QZW2R2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa3d4b33e61904883cdcc58dd65a79a52bbbf641bfa053153215f6a634b831d. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZW2R2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5565872d244c9cf4a75432eb66475507f66730ba0df4494aeb12e6f76fa447. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:03:04Z), 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/QZW2R2400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31217fd6ba2500662bdec4911b55e7ad46978ba208573589fabaa1224f4581c8. 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/QZW2R2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9ca21b768925a3d529008e78cfa31521267767d01213d6817aa649d064540a. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZW2R2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442af728565c9951c5b11b5301a77c94be721850e8728bdf366356dbf4634b1c. 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/QZW2R2500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b36ee1d2911d0c3172dfad158294d8073fd04e575509bab5414b4242c2be1ad. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZW2R2500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ecaa0e9d0561f9b25448701089d743d65b1af060b7613609b942f1ae7c948ce. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZW2R2500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad99554fa9f8c99ff26bfbec61d2731213a84ef0a13d859118a64113d9017c7. 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/QZW2R2500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9076106d065fe714c95f29a710b3d61612eb6126548729083292b5f226bb54f0. 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/QZW2R2500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d1634b24d89c34d4c84b9969646e8ecbdb260ae37fb5c48382728450c8436a. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:43:30Z), 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/QZW2R2500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b595e3bf4bb0422de690f4d708343d422fa4bffdf62315ba16e51130d6735d. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:19:18Z), 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/QZW2R2500017.