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 0xa56032bca0789b3deee61cad4907bf91ee198ff52eb1e960ec8397cee1f2b212. 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/3bc525a2-5c49-4fca-9126-7e3fe9da3a66.json and https://artists.proofprofile.net/proofs/artist/3bc525a2-5c49-4fca-9126-7e3fe9da3a66.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 0x9f13e8c5fcc713fbac4c7bdd30d6c45fb85735ac64d505a2cd278c67959f6b51. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/CH6541710576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b00242b8154bda88afb12f0718b9ad5ababd33e0e8b865d5d78c29c4d2f155. 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/CH6541710579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dbf0bc318c0a7afa9147fcb6fdea1998395ec9229c675153537f18d43b30ccb. 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/CH6541710583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbb3b1a4fa060aa0b6caa69a4ce46ce7df4a740015fa5eaf3075dcbaa36d9ee. 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/CH6541710585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91726cb6f83d05bbe8efc700e2c94931ff850f9d1dd1785b9baa29199b685bb4. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/CH6542522596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c62062d4d54f3bf6e354a150931df4ace624e8e40e8c37560a39e096943a0c0. 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/CH6542522605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a01c8a8d2d09fcf1e5ceaa639666381b198be3f0e0490c4957ec889a457a56. 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/CH6541900314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc7248691cbb6256ca9cf98ad638c5a368e6db936d961a03e5d357d465e8e10. 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/CH6541900315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81fe82a187d6e791d62eb1cef1f3e06a17c8c56f1993ea3737e4476427ad3f7. 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/CH6541900316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f773be199017be9e1729f12e7a813834e85b4e7363f5768f0c502fdbd24ffc. 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/CH6541900318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7abc7477518df53cd4ac8ef8f0c575acb5a6706e0caf5f145c76311fab6500. 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/CH6541900321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764796505fc439fc0da008b41b06d6102487a38af1a7df8e4d09fd27ebe51f29. 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/CH6541900322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd9e3033b0547b4386df984726b63a1829b53f6462b09df21e3264d920508d2. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CH6541900324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526374b2db3cb616c8972c7ae8469cc8487b1b8dd5a8e3c172fdc48f4a380689. 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/CH6541900325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d5569d71e38ebc310fa3c6dfc0640984f96d7fddf8e5addb2bf6dd95ae144a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH6541900327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a876debfa4db4f3dea42d1bf3ead04608fdc6867298008201889a1d7150536b. 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/CH6541787679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb688854d209ddf30602e3e46c4ce10b10ac2b55ee90e5ab382401775edc2c08. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/CH6541787675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66c73b98c1ccc7eaa06154939f4e2129cc2c6133ef6f4e848d14f75263448e9. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:30:23Z), 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/CH6541787650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb231c24db7fa755235ea015a2daf76a4efba0c18a59858847cdd8333eb0ac5. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/CH6541787645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4fc78f130e176cc73795af8451e32a0a7120a2b758f22bd37e521f8a28eb01. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/CH6541787642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07f308ba9c3690f93b3cdf5710f1e5a4ef05dc447ec4d9d635659fdbf8539ff. Chain 2 (Bitcoin): anchored in block 958572 (2026-07-18T15:47:37Z), 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/CH6541787641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f17550a3213cdf7a068f7aa1aa5d6fe241eaac8a75b014d51e759de2068249. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZDA52373923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21de8680c15b5451c5dc5755febc471510dd73264d58d174f97fd84f977cbe02. 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/QZDA52373924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ecb7830373f3fba1aa1ffaf5075b14dc50af923bb90599ad754e42266d3034. 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/QZDA52373930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe253943521114700b8866323fb1f7641e62013d4ab446f6df20287c7b0c41346. 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/QZMEN2410535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746987d2209e626702e9c5e15f2e233252e11344ca1396b19b2e7c7b56a41d04. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:08:14Z), 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/QZNWU2444437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9a409e291e19849574aeceef38c41f661b7b0cff7d199bc2bcfb323bbe9b32. 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/QZNWU2444438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ec6c290c5448a09af66233e2ab31d6bfa93574225ab8483cff4d35cfe65aa9. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:58:25Z), 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/QZMEP2410997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6c90104776228a49cea19c078c0d644a68f5dc8593de348f1824e49dc75e2c. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/CH6542539386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ed855dbf2fe965f8c41eb1be255016a57dab1e3189c6fbce6a725b15191897. 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/CH6542539384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a641dcddea8e977dbe56b91e63d5b78ffdda698e45a75839a8b4b76b30e77e. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:26:29Z), 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/CH6542539383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a5a21771cfb030243d0b7cff2874726af7dbf12b9d0991e2dac13b42591fcf. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/CH6542539374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88485a40b8433816d6a4191ad460a87dde234e600b1307d785020dd584c3c8e2. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/CH6542539388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x439f68c223f91dd85a164130d7ea3f685f06903c789cd57059c9c18836782d08. 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/CH6542539378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b76075497c0a832f731e1148c491ebc733b65cd885fc1583ecd778570bc1833. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/CH6542539379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da30aadab5d4e3d6d1843dab322b133d1c6d46e0eb2e0f5e9c75ea84b391bf2. 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/CH6542539387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635a1e9fdd96bc97a1ca3483f2be6c617d7eda3c6e6ac7d6b11e106335e0a199. 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/CH6542539391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28067c46ad5dc3be623ef9e4a500146a20b7c31a35a7bf2f866d0e069cae44f5. 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/CH6542539390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082b1e9c5742e975c5c609c4e7767333b3d1a98c4d23d0168fed4136fb2d9aee. 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/CH6542539376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8afd485748af271f5e390108a89e53bd64c89baa8c20e8d71b420b291b28fef3. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/CH6542539381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6969136bc8de49dd1c5d1fa68908fb4bac32d0e7cec17d5173c7cffffabf56. 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/CH6542539393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74cd96c31738c127657e82170d78150a6d158bfbe0be29e342e10315f02a93f2. 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/CH6542539395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e7d21fcdd94ffb22485abf89f3002618fece72d545124268a3e1403ae48a9e. 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/CH6542539397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245d26184d2b24869026c6eb20c99bf20cb06d069f1abf8cfdf87d64125c0549. 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/CH6542539394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b5bfd45d1ebb71a3ea61d208a42a235cc5b0e07105a9046280590737498dbe. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAIJ2435163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0986e3b77d617c943c4ebc60ef8fba8683cf9da9583d6305a23bee3c61295d. 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/FRDKU2100190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf51c7325e1ef90701f393b3736777c2c3c6b23c3631a45f87d5971e7dd6f4f6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRPIW2003030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9761ad73b2d88e7094484ac66dc706807ea10bf120251b8203f74031a9c39fc7. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR8GV2420590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f91c375dd008ba9ff271f655c2f7572a0681bfe4d8db9fabc93fd852dda949b. 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/FR8GV2420990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9761ad73b2d88e7094484ac66dc706807ea10bf120251b8203f74031a9c39fc7. Chain 2 (Bitcoin): anchored in block 957057 (2026-07-07T15:21:38Z), 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/FR8GV2420590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14141759dc9c094e1c66a785dafc151daa60538eb347388918b232dfc5b26479. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/FRPIW1900450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b24ccd081d12b58eeab502eb1a651cb19ef36c66c01721c7265839820ebb958. 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/FRX852204120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebce6c08926f59ce6560e665a55da94b2806915e9e3b952b28041b01d1aef614. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/FRPIW2001540.
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 0xc26706b9dbd23f08878588087a8c9894758fde1cefb1ae63e4eb09831f5f618f. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/FR8GV2420940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe37d3379485834961daa667a73598e0eda0277c6ca1bab6c3403c12e51ae601. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/CH6542187595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf990a5143c4ce6e95d062c9e04e1684d7461deb2487e887401b4a63d45c9324c. 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/CH6542310644.