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 0xf1cc02ab79dd66d8cc3167103fc73028a4154850b67b4c547a287d7f16d777df. 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/0bfe2a42-9c4c-4a85-ac08-bf7eafac6a5f.json and https://artists.proofprofile.net/proofs/artist/0bfe2a42-9c4c-4a85-ac08-bf7eafac6a5f.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 0x76a3a52a93e3bc868791d60cb4d3a9b8f023d564995d289d43efdc8ae021dff4. 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/QMBZ92379732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a6ca81570b24a16a72becdf780113ce161adec609d45b47a75f7a08a8796d5. 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/IDA832303286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa18425e91a2592cf540d51783cf44e531e21dbeafd25b30686a66e20f32593a. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:10:38Z), 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/IDA832400379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce380bcb61690dea3cbd74d12454308671e40ce3889e20fcfb984d7d55c08a6. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:20:17Z), 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/IDA832400411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e441bd485c331552e974df18b5e371a79dd3e165149182103bc7668daad7689. Chain 2 (Bitcoin): anchored in block 957737 (2026-07-12T18:02:09Z), 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/IDA832400933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d8bb379b053494ac7ac28dbdbe7ffc763154ce07f18ffd273edb816ddfd9bd. 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/IDA832401576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1590f07c3ece62b0c0c6b2cb70da8f3f39583bd50bf53a0e4b1f7f2cecab98. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/IDA832401941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dca3e7870e03d7128c43687f1ce0f8763c11c44e47738406ee3d649ea4e35b5. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:06:32Z), 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/IDA832402297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0646a41217a81e79836642cefb6d35ec0113e2d65f7272ea000cd72e62cb2f9. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/IDA832402211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x525cd368032a6bc8dffd9ca1b40980e5e9cf8ca560e7fb152040d79269a963f0. 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/IDA832402587.
Daun Puspa, Alim Bobogohan, Sorban Palid (Medley)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17808a1571d5469627944201d9b255fbb45bdc77a97e4d7a3955818b64dc4004. 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/IDA832500245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44aaeb264d12a40f6870a2f6252ae614631855d2240abb99b0a3d7b797d31be9. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/IDA832403749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfbc1befaef11a8cf2f37adc5f5f2261e471538ca10ee710da714ab524b756e8. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/IDA832405321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaecffdb00f06b4bf9fbeb9b41f3a6c075b2a2a14ab4adbe023e1c09769b27732. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:05:53Z), 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/QMBZ92379504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c1bef17ccc58bf47a7d8270b183bccebdd07d8065014a2c3e458cc90485328. 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/IDA832500335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f40edbf7b4524bee96200b607c2691e4bc2546c344180876ad865e5a165f23. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/IDA832405730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8dfa09c2a1ef6b3c8882b117ed70fb4e0a0814a2ac88b3a0e1b91f2a0fca246. 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/IDA832500244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5477de0821b828dc310a642f2639d422d9424445acf4e709c1fec7e39a4d65. 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/IDA832500358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18acfbabd41a2248a5d2c68895ead6f5c9e9dfe6f3bc220f9ad7f20d07aa607c. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/IDA832500453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee91dde5ba3ede46777654f4cad75ee5c923225e2605241b6d968ec52d84e1a. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:22:25Z), 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/IDA832500530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd787f36827fcb4b2bc39141b76b355a57dc7badb82cd2b291e381d8867f6e14. 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/IDA832500606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b42858c3b6deef552aa6dcaa4b5070c60dd95440190ca93a36fa926e186cce1. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/IDA832500862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34db9c18dc4cc182c09722f78a4dec506991667cb7697a511756d034909b5163. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/IDA832501549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe073c2e0e98e2dc15be37063e78bf0fa7e1119243bcabc585fb64d6e9dde00c. 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/IDA832501511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa4ca1990bcd223f2f9bd90122b697db7c4cdd6391737ad28357348fee94e6c. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:06:22Z), 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/IDA832501513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584f9e81d27fc713ef24291b85ddae3a19f60a652c4d15d0176a3da871a39270. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/IDA832501514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789ce940391ad251e0f6d5aa21df91f86a9e52433655df05967fb49b729aca4d. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:48:10Z), 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/IDA832501678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621c1fdbd1d6e61b36fad4310e4dec53d05804789b649119d8ca2c5045ca22f3. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:27:01Z), 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/IDA832501773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b100287b98531406f98d6642985b617367c695061d83c06e3ae5966a7f6753e. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:27:34Z), 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/IDA832501910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad4c0bb57de56d0197dab266ce31ff6bc3b0bb2c5982542dba186430a9de679. 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/IDA832502035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8b78faf14e7524c72b3b1efaea39b0427075bf547d65db94d5fbb30b35d1d9. 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/IDA832502143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432b8291728d1aeaea4c853d8910ba30b748d4d2da1f582b4e333066d78234ac. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/AEA3A2190737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687597dfad79257cef46ea57df9dec1f30e267447aaeafb9bed311b78db7074c. 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/IDA832502349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7a5fbd406bc3917269244726356d21de53eaf499b8486c87f3e1d8a9b0c8bb. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/IDA832504061.