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 0x77763194e0cdbc6c9e14c13947ee37cce76594642bca92889de168bc01fe6ea3. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a173229e-1ba3-47ff-bb5b-e2e726a26d29.json and https://artists.proofprofile.net/proofs/artist/a173229e-1ba3-47ff-bb5b-e2e726a26d29.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 0x958bdec8cd4bcb63999ae16b210f9e7bbfd587b3caf261eeedeaf5013f2f1437. 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/ZAC030900175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33972e6e7186a12f64e4155c5768800c3bc9cf730e875170a4d3fa07f89fca1b. 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/ZAC030900179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333038016bc21393305c689aaf5ee213e56b55da922edbbbb1c41202e7fa5d39. 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/ZAC030900181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5eee4ee3c854200c111a24d3733ff0fb1a59eb4531e503a8a646011d1454279. 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/ZAC030900183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3156c2064cd1ec871e0eb2a6c462c136c38da14d8d8420abae5a97afd300cadb. Chain 2 (Bitcoin): anchored in block 957661 (2026-07-12T05:37:10Z), 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/QZNWV2061769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a077e94c96e2aae7fc9486a5484a0d192c856d4955edbbd24a8112f909da02b. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:40:26Z), 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/QZNWV2061770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0cb3317bcde2b81939968496469890bb0b5ac704a8c38571a1c44884c5f2622. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZNWV2061771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f51229fddde7928a3e70083cab7b8ec29e454d2a00df57374c79a686d1190d. 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/QZNWV2061773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2767f00a56753aaf147f09f0f33d51f64e94371ebe8d1cbaf400e545d64fa2f9. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:41:20Z), 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/QZNWV2061774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d19c0641ff0886e74d948c7d535adc71ad4cd4388a276f40283682a95717c8. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZNWV2061775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e8b4572c2385d30a860f18cfc1f049465181d062debf95a808c021faf2d32e. 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/QZNWV2061776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a22e255285c0693e0af738bf8b9a6b45387b1b2f356e46741db32bda08464b1. 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/QZNWV2061777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e0387f4e497455adeeb26a5d78af4efb1465f0af3c1fdcd9cba34d8701e79b. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/ZAQ651402818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab29cd50b739a0a02621af701ce5531d71d949daed929f78f7c58fa9a7ff5a0. 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/ZAQ651402824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a94309622107f77b7747b3508543308d042f731d5facf3de94c541926ecb31a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:35:34Z), 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/QZES61998793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91e80125893fe463120b52ffdcdca8fedfaa94518d49273bbf462666473795f. 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/QZES61998794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8a584ddb449ed1d686fba632ffe14c1fd8910e9a810cabca52aee0b1ecdd7e. 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/QZES61998795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e13e6b418d001c73aec8f425598538733957af98d89d02844139788bf847b5a. 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/QZES61998796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280c6e2939c7dd80171894667ba6fc1e7e6df70a1da236cea6f6fa4cea55ad1a. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:46:41Z), 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/QZES61998797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4738b71117b3a45481a7612e86ad7cd776f17d024e96834deaef55a257ea3698. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZES61998798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f6f16dad961fdb6377c065be48449f845bd331b61ffe8aa836e43c25a6d8d3. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QZES61998799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d42f15552ebed4a63fcd6e1551eebdfe8989c906d81d44b1c905382b326248. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:01:52Z), 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/QZES61998801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5508877e82e84df6377ff5a12da21fe98f11197b1fd92515c6afe94f67f5bfd0. 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/QZES61998802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf2fb4c56362fe96ab00b32a55f3ab34201c2c71cf0dfee01cc981ca43dfa14. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T16:00:26Z), 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/QZES61998805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbacd7cad46097419bb9556f0a357ae60fdb782788c91ba393466edfb09006282. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/QZNWW2575086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1558b2072472b57932808be6139c42b5343dcc060d07d563340ba154698f27a4. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:09:32Z), 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/QZNWW2575088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e50aafd47c44a2354f435436cfacad3f0e4930d76b4329b4cde0f04042c55b. 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/QZNWW2575089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb116ad607b21d2ff6e945f5264297700b9ece5f89fb565b60599020ae0a646b. 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/QZNWW2575090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa489e5d10a162d7473a49bce3f5dc15216a3fd8716aa69d6b06469af5c61fe7e. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:19:52Z), 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/QZNWW2575091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422d059d78a9eeb206a91f57272ed1c9fcc7322434595d48c5c5bb982a0aff68. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/QZNWW2575092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2daf85784a0643de94ec569c0f6d4f7c1de2f272277830a8c1a41203a2a701bd. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZNWW2575093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296e0000cd4fee890791de452357f4f20820aaeaa74d78d194d78ecab7c8041d. 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/QZNWW2575094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c149fcc26b71cb4d62100e35efe87150c294eded954eac361304043780475e. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZNWW2575095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e29358868f6d00f20cef44778dea1d298fe600c27de16a756cf8ff01035a85. 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/QZNWW2575096.