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 0x50d421838119b38eecc34bf28fc5af1e41f68c6fb5faf86890ed024e6931ad66. 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/543a7db7-9ff4-485c-b122-17c161249e60.json and https://artists.proofprofile.net/proofs/artist/543a7db7-9ff4-485c-b122-17c161249e60.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 0x36a367e96578c27a11fb140eaf67f76ca3ef9c4b63b3e31d26c605c4dc340eae. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/TCADP1845634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac52db2dc547668b19d996f1eda3b9da1c1a5e1cdfeb025229ead49259e1365a. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/TCADP1845720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052fa3481d31b388069fa858325a62e68f11076e98cc634a2e0b189420fbe419. 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/TCADP1845636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c531a0448db47b5f9b8f1a41322ca3eaf93715e66876e75109657589b019e7. 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/QZFZ32029188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949cd429e1f0f03f831574db960583d1c2fe2b95ac8fe0f3fbf867695ea954af. 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/QZFZ72079179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617de2af2cc75f531abc30b1693f9b5d2497b6889e07af35ebd4305365753bd2. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZDA82035647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79f31a9f02653f1d1e8532c8d12fdce0c4e72031898417b03cc9873b862ed49. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZQ622100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe289c6ea342762cff47ba7a68ebbbc2ff62a5bfd72df51b8b56e6589d4f78992. 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/QZQ622100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2422ad6f544e29291b23657d058f95354a8559a17a249dfb1ef34046ec07a811. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:21:19Z), 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/QZQ622100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46bbd8b380be6f23d9f3b5ebf1210ed5fb66bf0d2197b012b3585dcf74c9a990. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:04:26Z), 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/QZK6F2186361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084d7c7ef8e280c93b714d6e733937ba8227b670cb6e92b7f38d92cf3c9dbc98. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZQ622100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091a856eed737e1783278815a402112adda16c40a54777546cb8646334d0b485. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:13:18Z), 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/QZQ622212347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30364773cac6af88221246cbc92b83b0f794c734d8661156e41cf42bc322b612. 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/QZQ622212349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1281bc142466f37113198970864672953de9298f474eff824c77a3ebde082ae4. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZQ622212350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc9d64fc5372adf312b512d3cfeda05737531f9954dc1b60191e9d00657b5c4. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/QZQ622300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cdeba89ba9a28a0b5f2ced371990e4c7970a87476fd0e1270bdca307faabade. 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/QZQ622300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf861dc6ff4c0eaf6fc6c72f177b450c20b6404480df4d8a4cf8bc74a3e06d470. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:06:20Z), 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/QZQ622300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a66bf6ab031ada29705726f47f8183f4aba857354046c2dff79382b70d2841a. 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/QZQ622300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f554f1d7368c3df6a91ee687fa51f9f16232c27b5459875a9a9dd4cfb2d807c. 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/QZQ622400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f297d7628adc2fffdefbb2d7cc46041e8d3891ab6d3762014f62e193057657. 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/QZQ622400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe538f657f003d324e25ca08f0dcd83177ac362f715958efd6efe9a2845e37a. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZQ622400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63cf6f0b42c82aeef379d769b8765e9cbc010aa5d78d2d01e76bc11b790d748b. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZQ622400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da9002b86463d3df863f42edd7404329ac8dd165c839afe20f0c01940fdce87. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QZQ622400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c60509bfec1f5f228835520d7cc5e2e5b3a63f43a6512259a6487e4fcfb5981. 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/QZQ622400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65332875ce066c4cffefda399fa267bf95535fcc6dc9735c08b40dadae80fdda. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZQ622400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4610d943513cf4834b05796dd9d46020241b5ad9fca5eba35d3019eb4c6f66a. 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/QZZ792403314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4fe32426e218bd15596f68c41a0fe2a548b9ee8456be3b54413a5fe69252933. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZQ622500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d114ef6f75262dc74ab31c2843b06eee6e1436b78e06698675010d0188b1ce. 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/QZQ622500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893e3d03971923f29693c2ae07aa363a43ec706650d216d78d61d94fae087b78. 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/QZQ622500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfbaef4c5492361f05e27b8191fd7a79735bbffae9ddd7f5a8a32d64bd88897c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZQ622500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8df19a6c32bae3066fdde856e1396eab3cbf84dac966f10c050efdd1a13198. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZQ622500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3116a92eb2987cc986586671692f9a26b726fd4c3841f2dcfb255bf7ea4e3dad. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZQ622500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f6018a13e6434fdc60aaf63cb4141e47068fde3e64f0379b22624bb30461d66. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZQ622500024.