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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec80c9cfbfabdef6d7e5245a16a7bd9670b2ebfdfd7556b6342ffb813d22c43. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c6133f70-3280-4f45-ab8c-9741ddbecb7a.json and https://artists.proofprofile.net/proofs/artist/c6133f70-3280-4f45-ab8c-9741ddbecb7a.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe134fac4d80acd8d7470f48a11c53dc56ba89ddbcbf426d218f93701eaadbb8f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USHM21427139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d416ca83cd98af7d14d20aa41a595a8a3ef1bf66ee1716bc8e3a5de2039defa. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USHM21427140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf71ea6ae60b5aef020868c4b1a5f1c2d0c6223f0c23078e3a366202ec61f79. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USHM21427142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f77f434d1f047e5563f2c042122a98eefdb2334389492f070ab288ab9fd7bad. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/USHM21427143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5674604fa860a595c2653975cfb1038ed5e7972665fe8971d7288b2bf016d58c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USHM21427145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ece5617391b48ae53924a3426d792872851cf8274cdd12b81ac366acb3f91ac. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHM21427146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a3fba4aa0a584f7a3df925483f0a08141445f571d8eed2c9916b489b5bd6b0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHM21427147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272dd14f038042466690bbabee0f06e819f67aebb1981ee7687b23400589b78d. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USHM21427148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3587e3a2782f1a90725d56b79caf2525a701019e3678f7225d5664c7280635a4. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USHM21427150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206156f5090e98942f9758b35f096b48c07e2ebbde5095de616b42cd04c3f40e. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/USX9P0983279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05922453303eb00cc756f9f0e555e10f64ebd6d172722373672c7b7d09471c24. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USX9P0983280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d53893ff09f7973cfab4a3a2bca1489b9d362dc9bcf0f5f9c25a62b491cb7f. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/USX9P0983282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23aed38bc35f55242d9d7ff8ae54888ca8e2916da11d38b23728f0ffb156da3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USHM91175467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561bee18c4a68699955c1179f93e93cbbc6b800f64f0249e908f804f46754097. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/USHM91175468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7ec7334b1cf12d7ca70c4677604e6acd91d7982bcbbd14f92beadb11ff1afa. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USHM91175469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf59ee15ac6e3ee178a487684e1e7f33bb1e0d39ca6ca80a2147ca56ecca46a8. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USHM91175470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60187903bf1e81e0a2790c15010d5e80ed19161fc30990afecaf7d054513753. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHM91175471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc379250f0d3f0d89afad22f67bbf5fa435fbd1e5758d5afc96c4815e585d11b0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHM91175473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2cb526b3e02cbb01021d67e74bdaead255a631160494f977b59ef016c11950. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USHM91175474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7553fb0a1dc22071431cb6260f68f1190faf8085c612d4f9a8c66f3e608203bb. Chain 2 (Bitcoin): anchored in block 957249 (2026-07-09T02:31:37Z), 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/USHM91175475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1e96b8538b358314dad9455b9044a15b31c35d7f5e45738b312d36e43b91e3. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USHM91175476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb044be6dcbdaedd9a207893e60e8c538721804d66f8c43ed4f6d16e9fee4e8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USHM80686977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5efd444163575ae9e817663ce9feeadb68c59ee716b7a928b849e08278fcd2b3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USHM80686978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd485c63099857c241f62a346d78043157b2a0a8626d81ea0b8404bd6401d3940. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/USHM80686979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef7b899eacdaae8b4cd55516362af3c21f5b7c1b1fed42226640c727a4c124d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USHM80686980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3767b87dc3bb54785c84fddbea939a2c459d2e09a22cfd92ae06dec1072f676. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USHM80686981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cae340b97c8702af20d91a8d36fd7179e618a15324093703b2a87c0519aa3a2. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USHM80686982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160b780efa27b051b7501d937c06bccf0917281e8ef6490b958dde11b5e6f565. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USHM80686983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834a09cb695c660273d08137e1ae4cab6c1d3c5065dbed3af437bd7dd9bf8eea. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USHM80686984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb41cc2a474a4361a1e5b44265d0b89e08db6a5b743941a017d1da6f0ac9ec4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USHM80686985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff42e19912d801a934e583307d55a35650105223aa8bb568d2367688616be01. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USHM80686986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1eef2c1d3dbdad7f3124da96e1b833753d9a2352561d48718a96c0cd84614d. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/USHM80686987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1110f8948b19065457f30e723fcb5df021705f716e1b5184e62e95137dba5d4a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USCGJ0887969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245e09e3acc756067eeb53e1a868f28dd7a91535307bf79b1303ead4aaaffe14. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USCGJ0887970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a0aedc260f2cc6a7cded1bb347f0c7dc3531b584e59589b5732b1a188133a0. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USCGJ0887971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f3c240513b297c9038ed760fa09c9866ce0c7ad208592d0777e6bf0ef64e3f. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USCGJ0887972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc05a65ff04a247c2e8229773e50732f0d1ecf9bf650c3b5b37db9ed7d8f904. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USCGJ0887973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab93cf004ac53c8edbbd2f6238064019b97aef1217ec4994d15ee65ac6ac9a5. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/USCGJ0887974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a78cf2e3f0e18024a055f01ab0b82096ff813d6ac44449a9fac765eb8dbd13. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/USCGJ0887975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94bfab54baa178805e1f54fa0a3580b354193a310250806b83db9ec01f79bedf. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USCGJ0887976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7e400092c7f408a913bdcd65daf67d13ec2f43aef054360967d9478254b862. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USHM20822130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1f1ee641830ca56a7204d008ac3d96fb9063659efc59e26b7342349c1b2deb. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/USCGJ0887977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe682c8049d2836a98105cfd24bd3e02fa6d8f467a252279a40ac152996b577d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USCGJ1472020.