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 0xdd1ff48329ad3d636e5d843703eee81968eda1513f2cf254ea5ef154b97f4112. 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/69e03cc9-8a6b-4c3c-b8ff-a2e002f4be4b.json and https://artists.proofprofile.net/proofs/artist/69e03cc9-8a6b-4c3c-b8ff-a2e002f4be4b.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 0x958cb4199f10ec5fc5890aab1a255cc992a9df6095888dc548a348e1f781fe66. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QMSQX1200113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d395d3643824f011a7b528aa5f988c5be7709ba03d0fc6863d11525caeff0b6. 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/QMSQX1200114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b39f2f72517f92fa7bf9120e7e7d53969a6b1a3e4b3c1268a03b337bb6f243f. 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/QMSQX1200106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466b5ab1e3d8e9469dd725aa96e5e51bde6769d7d97cd3e159e71657acb4112c. 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/QMSQX1200107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e13bd29d52b914f213745d247e680841d96169f031fbc755e4ca6c700a8e17. 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/QMSQX1200108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61be34fe48ce4c05000c6ee009c4f350819630704ce0c09bdbafc32a6a602f9. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:06:10Z), 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/QMSQX1200110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699c303aaaa162c6a727898f475207a0941461122e4598740f79269a82e09e1b. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QMSQX1200111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b9542e84bc7a8ece0999c1e48b461594fdcc5faebaeffb307dc31343054c41. 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/QMSQX1200112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57fa31db8f1861001011bb47f6ea4c59992ba787036ce4d66e3127e1af97397. 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/USA2P1410591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde62f2b7685d7e850848f24affaea9dc6d556f51c31689904f78518ff83c2f7a. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:20:52Z), 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/USA2P1410592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e39bf660af7b1495d08d68d2a7c8485eb419bc35174d6bee43251a270e4e2fb. 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/USA2P1410593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1732c4900e7af47794baec5b855f2d905d2c9b31df516e80782545054b9d23ae. 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/USA2P1410595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12bdd70a15b52ce66a60c8dedaaca3c9036c49b9fcc31fb60ee2a0634f74a47. 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/USA2P1410596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb45ec66a5b7916bd4a746e565b5f16f68fdd5759c5293533d0e76999953cbb4. 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/USA2P1410597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191d2dfbb7c5784e3c99eec269cf643b4c27a931744b39deea6102a4feb31f08. 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/USA2P1410599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63585b5939f5805c6e733d2162729e9a4335fb62e3afc51c9f0b8f33b9451f80. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USA2P1410604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fdb50794ce72ae01332e4e675b7c6d8b1f71f37fc00717647e10151e370efb. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QMBZ91768217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f2071afe394771fe949217a3a5ab7c261112a99d54921db7a104344a2d4d41. 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/QMBZ91768218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3529abae2ec6033fdc6b9f38cf4a9e919f2e85e8f2d17760e522c1f962016b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USERN1010196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1d464dcaed8cac17e0dce87b8aaa4935281f622708426473fc8b95d5be74f3. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:50:28Z), 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/USERN1010197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f14e91729bc5cd04dd7e4c41a6348683530d492f23ccade11def47af6ab2dd3. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USERN1010198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9588cc8b87fcc0b38818c56e7ba4bb5d3c0dceb8cdd9c2970d9a1d4515fb06ae. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USERN1010199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba03e648a83111baa120d41e51cc9f63cc98908dd7fb404a85ab640616013c36. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:06:52Z), 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/USERN1010202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729790b7f80d7b1694071f53d085fac0c703d15344011042c3051d891d4bf136. 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/QM6P42053217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40290617658e626699beed667d99b9a531fdf26747a7050f461ee8e21bf03f4. 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/QMDA72165979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b4d1269c889f0c635bf8cf1faccd7d0eaa4bf1fe13d87d634503c3860bada2. 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/USERN1011107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40084c43d0cd467dae057040cdd302e6a45d3f022db90c387fb375672f572dcd. 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/USERN1011108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43140946a3a28bfb4dc90ad1d8736f44d34ed87bf2e645925b444cf0e06fd03c. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/USERN1011109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02866e9a13884325fd3b689f07f0203a91ba193f854c2eebef445957cf3cf0ef. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/USERN1011110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99011509321e3ac8ced372b6a598f78c55e563f05bf0aaa270dd72be1c9ef31b. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:00:49Z), 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/USERN1011111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06e6295ab2537ad709668447b1c29c6fbcb53277a1bc2bbb2f5832962bcb92c. 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/USERN1011113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b80f2894ba2dbc6269cb7abf8cf18b1e96368bdf62e6d5b24dc79374d5e5aa. 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/USERN1011114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c041a26b2c4ec601d6de398375a2e9aa8cd49facaf7fc1fd15c95ba3362bbc9. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/USERN1011116.