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 0xc141e24792bd0d76b1241f881c08986bd2a20dd40d0d6e81a85f08c0747c69a8. 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/e2f063d1-c17b-4c87-b7dd-c35fb5ccbdb2.json and https://artists.proofprofile.net/proofs/artist/e2f063d1-c17b-4c87-b7dd-c35fb5ccbdb2.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 0xbae48d61a18dd8099b264a46be97b36e1bea8e61b441bf89d6a6b18d751b39ae. 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/ZA56E1902748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2457b05e916f3439658086046a675ceb7189351582a9536bfc0b091598263ea. 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/ZA56E1902749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9591b2930bdb86161827c717a55398f87cbf9d6b968f2061636848343993bc8a. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/ZA56E1902752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc100ab095561da8bdc84b1bd69c9f1fdc6fdce31ed74a7ac1e26c7edc0a0c455. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/ZA56E1902754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29b9ebb4873fbac371217725fdad116b41516c11f40dec5fbbf7ff35e070814. 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/ZA56E1902755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19dbd58e8d4709f17f90e52c4da50dfb43bd1349e07711d62f1d3b6d1d5553b. 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/ZA56E1902756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d777c15ee0f641dd5507cfcfc1f8a032b64def04bc2d6b80a3e1bffe12d60e. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ZA56E1902757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef67dd7e57ea050b3fc3f3523b59498d3d0d7a6a2d38622837c597d53ce96f3. 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/ZA56E1902758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25639ed0aae1a8219d4853b35889c3fdfb4882ae419a3b3a2c4781e14d8153e0. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/ZA56E1902759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65162750433440559a1f70d0b66fb5b25cba264c94e72392fca6acaf25164efb. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/ZA56E1902760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9589cbe079b6748c428a8f7f9823c667224dd0d1dbee2484eeee2feb415ce7. 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/ZA56E1902762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07ba3df448cd568e09801490e04ef723dea780438211afa848c17bd747d3bce. 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/QM4TX2593584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa274481bfb1a4c3ed73d3a7d79aec2eaf976d5e1f3bde7e8130ac3c6d5be1cbc. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/ZAQJS2000086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e86aa296a982fec7e6940632593fbc32d0422ddeaa09d84377f1ec8139cb96. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:08:37Z), 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/ZAQJS2000088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0553f78d81524a3b873a7db4f3159e0d605d4dd154dc128ee04c7ea003ae3c16. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/ZAQJS2000089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21e698c33beec25fa5ae593994bf6ffb815c2d8058de3431463a3f1ab1affdb. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/ZAQJS2000090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa274481bfb1a4c3ed73d3a7d79aec2eaf976d5e1f3bde7e8130ac3c6d5be1cbc. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/ZAQJS2000086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e86aa296a982fec7e6940632593fbc32d0422ddeaa09d84377f1ec8139cb96. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/ZAQJS2000088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0553f78d81524a3b873a7db4f3159e0d605d4dd154dc128ee04c7ea003ae3c16. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ZAQJS2000089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21e698c33beec25fa5ae593994bf6ffb815c2d8058de3431463a3f1ab1affdb. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/ZAQJS2000090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ed45ad522e2d615e73e4eb43de57d2dfc3f8d0a58da0d657d639d57a85cb0b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/ZAC012100633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49b01da73fe2af7434f3a9474b4c339d268e0dbad2e0dec5657b44421a8aa55. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/ZAC012100635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79863a24becf2cab209630423fd7b7924774e6e4d5687f8e0a7c00542a5e58bc. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:40:33Z), 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/ZAC012100637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88829b2215ef9013a64451321284ca09b40bf7ad0a801973940838bb213ae88b. 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/ZAC012100639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b3e5520b8b65dbf800031ad14ee08769d3da692d87bb3e39f1c901473b5671. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:23:39Z), 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/ZAC012100640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2319bcb93943d28975a6f902dacd5bcf5eba1a220c3f4f133dc76219fa4bbeb0. 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/ZAC012100641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3dbb3e1621ada5e95359e7fcbde55505e0d1b1f8b700270481aaf25eedaeb72. 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/ZAC012100642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80898620967ee44089d90f2dbb8f0db1393585d7117f23472851aea6186a104. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/ZAC012100643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e06b5ff00d56472e58f608b9e411336e94358a42b630036da0522a1e00ba57e. 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/ZAQ652300995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d5685576c3e04f06ded5b2eaf182fcbf46141392caae26405174e299792afa. 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/ZAQ652300996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99025049de77a13306af386fe1712433a14a3ed3270cf341f4c65a6f8fe4a6b0. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:32:04Z), 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/ZAQ652300998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b44bb1a3c8c5eef49e97a92957c32dc6ce57049e16e143828995ddb7ddc652. 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/ZAQ652301002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38fe3666e062604394b21a1348910159c1be5f9569df60cc57fd8a31d71f53c9. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ZAQ652301004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4000823b4ba70068a8b980ce1a1d8ed20cffdd30a7696461890595f1d4eece2. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:58:38Z), 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/ZAQ652301006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b51b9aa4e0ca2650cf93c47d1ae248c84e6ea76441a9760e3d710b7f324869. 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/ZAQ652301007.