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 0x1379f5420058d9ba8c2453593a10c88badad93561f9c88652f5c88907796663c. 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/e14dc4ef-d09f-4034-95d2-91b8661f1647.json and https://artists.proofprofile.net/proofs/artist/e14dc4ef-d09f-4034-95d2-91b8661f1647.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 0x783d6ddfc2de3cdea1c443e34e8e185471555665c7a0f43d20755c3932c8110c. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/CALVP2096051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9ab8f704aa097f1559b9e48a481e29a154bf50534d066eac7407f292b6f678. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:43:34Z), 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/CALVP2096050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3511311dd6d7871f9a929c9d799652b0c63798f673c2fc2a0f98ae3ae55c02e0. 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/CALVP2096120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264bd167ea36134e66ce9e05309088fe4201451297d651e4da31479de916b7be. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/CALVP2096085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5c86d1bc07a9cdfc1e63f4bfa96ffb08b72bac98a441789d98aef87d27707d. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/CALVP2096082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5fc0c15d91668f19eae5e4d4b444d11cfa0e0f73fec17b8732e191acd98634. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CALVP2096090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e0bb13d39b020295cb83a591f884d2d88a63719e47f81cf5c34c580691398c. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZ5AB1843229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e0bb13d39b020295cb83a591f884d2d88a63719e47f81cf5c34c580691398c. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZ5AB1843229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0cd48711684840c3cd234ee07722c6ddac2e0921ae509beb3970919c5e2275. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:27:41Z), 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/CACWV1989682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c96412e3ff4f3ff8bccdad3201961e9ee26777f8220550dfeceb2b5c8e2dc3. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/CAGOO1885543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9312d7ab783a228204e5c9ab9d61925d7b8a8a0fba55a1bf320760d2ed753be1. 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/QZZ662493441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5d0ddf328e251dfb65ff182cdf5588323032dbdd84325270750f107eecae74. 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/QZZ662493442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5d0ddf328e251dfb65ff182cdf5588323032dbdd84325270750f107eecae74. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZZ662493442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7faab9e69190126280f5cc2b4c3aae9367bdcbc503dd61618e00048e1ecd795. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T10:52:06Z), 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/QZQAY2425628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb8ca07fbe7c2210940d0cadfaab7715e2fb77410f618e3fd84aa62e6fa120c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZZ662487214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76c47dac85d3fc57a94c869be535046bbddf51ef58edb0693b4c76996f1029c. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:43:22Z), 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/QZZ662487204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3308192237bfe41ccdeb3aa5286ec59c6930f2e0f405d86e2b2afe3a2b29398e. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZZ662487205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b6c87a740eb2d3ac12b491f904e75a220e0f92ac5759598b2dae1e2bd4b20c. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T22:55:35Z), 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/QZZ662487206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b60d5e9d8f99620961be079778a4a0f3f6c2860389ef078b962a023c585661. 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/QZZ662487207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8ddb4176347c0b8e59ddfd8cf8739b1f08548d353d1dd13cdad6aa7b2a6a0c. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:24:49Z), 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/QZYFZ2435458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb36d83fc7505af06835905f5f1ee3fa5a8eb87a8546bf1720b290449a25ddd4. 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/QZZ662487212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88be5b91b42ae25fa604820f78b2a09049c72e4565f74150ad2d2d41b53a766f. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:09:02Z), 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/ES64E2416901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360bf89f1f92b0e7535ec76db1d907ebe3d067d84c3dcdb58dcefa5853c704eb. Chain 2 (Bitcoin): anchored in block 958882 (2026-07-20T15:35:11Z), 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/ES64E2500461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e0910142ccce7cf93227d6af5e3eeb0f2c5af8857f453cd26f7e04e207cd11. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:59:09Z), 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/ES64E2501371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe401c29b8eccaaab96bf9d7c5e461c8ed82711907320bf04a2beef13a12acb9. Chain 2 (Bitcoin): anchored in block 957791 (2026-07-13T02:46:19Z), 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/QZN882542559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7c8ea164ff975e3d87215a20685ed83242a701b80d7d8a66a5c796bed30211. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:03:45Z), 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/ES64E2503758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7471df2a46869ebaabbb724ba53d05bf37e3664e8e5a37ec3ffe8f6928cf36. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/ES64E2504213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba30531f127b0b1bdab80d714432a2b35a9f29351c7ea5636f47e46e8ed55687. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/ES64E2504730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ad3bc91aa95204aa9a7a34c37b242cbecb4264e7bc2dbaeb7b01bcc4f1a1be. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ES64E2506737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1524b8373ce9daecd8925c3cb087d8a5e6d412e92b4ad7574c56112d2f0ac9. 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/QZWDW2547845.