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 0xb1d0a6bbfc5da1bbc795fab7a7353b6684974054395e5197a7d6a500993853b7. 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/39889d4b-2585-42f3-91f6-678bf3247b83.json and https://artists.proofprofile.net/proofs/artist/39889d4b-2585-42f3-91f6-678bf3247b83.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 0x7bb30ac1bfe9070d9a508c6e840a24e442aaf785aa1a51a5f7b44d3a3073be06. 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/BRVR11400628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00810c29f43042d32a294913dc04d42da3e57e6a518ff771f6c999c2e60f7e3. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:36:45Z), 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/BRVR11400629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a589b2ac030610a9ad821e80372d34a28dd1258c18325eceb58a53597928ac. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:44:17Z), 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/BRVR11400630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5e0ded511c7840b1fae822afd01874f3211e6bc4fd6dc7fdca8f275d166a1c. 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/BRVR11400632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1307758d4601009972ac6adb6577796d6976d543d24e0754a9332511b39c5431. 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/BRVR11400633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118b82221b9e0479969ed6651023af98bdcd5ca37113e74fc96f813cbcd9bb79. 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/BRVR11400637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29fe416928bd88b2a2fc3bbdebb5653093e8da1e0ae4849f90884e95a36551a0. Chain 2 (Bitcoin): anchored in block 957611 (2026-07-11T21:33:50Z), 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/BRACT1000474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64f103bb0a9e2c4987c7ee0e887f41e51894357add983143f794f295325e5ba. 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/BRACT1000479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6ffa2072d2bb3a9e0e9e3af5bf41c6f32a146c2d40efaa240d1c8a411fe530. 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/BRACT1000484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcad513af3797c96b2bedde08cf1e90b4d013f10892be37b935a60b95e4c8ceb. 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/BRACT0702041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106a032f991abc717321dfc6a110b3fdaee50639b4b896f0b4d9ec678abc2d7a. 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/BRACT0702043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5c72a694f08271847b2a191df9bc33edf88fae24b25655a0a3bc6fb9405d8c. 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/BRACT0702058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508b76afe8faed307008416fea810d77893ae80b790f6bcb289c501696d1b945. Chain 2 (Bitcoin): anchored in block 958882 (2026-07-20T15:37:29Z), 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/BRACT0702063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2e66bdee92b9840bca25ab4774eac9f1ff09ff6a2dc2d69dc461b0db2e29ca. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BRACT0702064.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83e9e4d78792994afe4a56fd8c21d732aca51ab1adfbd3085daac63634be80a. 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/BRVR11800213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88b2a4226586b91c21267dc9780a8fefa7d229428dffd0b71edb140bd3150d0. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:07:47Z), 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/BRVR11800214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c31a40a09ce36a2564c500c050a8cf0f9d7c9ecb4ef03d551b90fcd08d5c882. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/BRACT0501186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc74f43d82c7acb195b32c804e28075cb0063c8e9a672b1b14baafced2c57072. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:39:29Z), 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/BRACT0501187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f620a6f3b8b5b7b4f4289355dce4eb408b502e2876166a3b86f84d8cc5c893e. Chain 2 (Bitcoin): anchored in block 957611 (2026-07-11T21:33:50Z), 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/BRACT0501189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f91970d965acd6b3305d1c7886cfb009ba5327fb2199017395c05a112c07625. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BRACT0501190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae8ed3f67594c0d1561af133e9d1981882ecf07c243b71e54035914da0785d0. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/BRACT0501191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa248debf6e924ecd6a59d69debdddde3e3163a242002a8120749bfc36763cb96. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/BRACT0501192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1dfacfd830c00f25d87402af6ecc3248d0050edbd96f3bb4421291f66900f26. Chain 2 (Bitcoin): anchored in block 957611 (2026-07-11T21:33:50Z), 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/BRACT0501194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7063d5e63b7218d4a13afb766652e59e62d248d14e5e54926f74f24141cf12. 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/BRACT0501195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58b21c0e95eead0f9d02fb23f2e18cb5a2cf01aedcc522c2b1ca59c73883dbe. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:48:20Z), 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/BRACT0501196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3e9fe6c9f02eeb121b8227557b41492a7b4e98fdcac0d466c203b522a43452. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/BRACT0501197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f75df5ca72518600a189d1f77cbe305ed6e74f9d48edddbd81bad86003f2e60. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:52:32Z), 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/BRACT0501198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f3259836de79b8e8951c494712a2603c29da49edf2f70f738cbfcf7093f41d. 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/BRACT0701867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f187805b3d9669fdccb8b7bfc7de9ddfc6fbca53274cfc90693b161346e866. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BRACT0701868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2baa7dae03954089dbb0118b199e01fe249056f7d3d90e41b6f99f716f8104aa. 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/BRACT0701872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ee31674a78b14c79ee636194badfaa5b1f368e5c08c511cab75a771b45668d. 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/BRACT1600885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078b664579fea0a07399b71cfcd8923bdae50ece22f18b91b0f2388ad68d6594. 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/BRACT1600886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24546a4344a1831595cf5739cd66528be63face399ec4cecb7f9cf8b230f0191. 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/BRACT1600888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4cab5f13e16fb2ef006dcbcd521580b0e46021b3aed8cd3b318b732b80e76a. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/BRACT1602314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e91d041d686fd869452071dd86bd6297abd634695e32b423f9590b7d9b933a. 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/BRVR11800212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f950e47e41c52c04513bf9c2193cadd11757402a060af50ca248f83e02ed0e0. Chain 2 (Bitcoin): anchored in block 957613 (2026-07-11T21:37:58Z), 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/BRVR11800215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a51935839185a3e20c66b9070cb242535228e42f80c2aa7964a15590c64e09. 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/BRVR11800217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e5e5274f840c9b5b0caeedd0dda720facdbfe4047ca905c19f8c5e863ea45f. 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/BRVR11800219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbdf3517565b3690b6584170eb0fec550de4876d937b0c144a094907eb59a998. 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/BRUSA2404028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccdb55ef8b4826864d922c6162c9ed0cba2a7cc976ed55f06f82a1a3d7aa02cb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRUSA0101361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7612e3083081e8854e52c1e2a81982cc4f5fb750bee5c5290b2558840897ba. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/BRVR11400626.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch