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 0xefb4006fb306ea595f1c0ec01ba4350392d0d054558c9647253b6043f241a6d3. 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/04a02be3-3949-46ec-b780-d5b404256267.json and https://artists.proofprofile.net/proofs/artist/04a02be3-3949-46ec-b780-d5b404256267.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 0x4822d8a3f3af485f237c313c5faeb8b2f54c8956e5bd170bc2063d5404f62398. 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/USCGH1845706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f0f3a74bc399f45c3e4c833b79e7cb4f92e9f07a276068c9ae24df33447d03. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/USDY41999506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf6ac25addc1d1896b0f46fc8e1fe85b88b8019a9b9560095f1ebd95affc54a. 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/AUI442100055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f40267fe4dfad919df24adab23d2fd49d138326ab3f4a8e132b8fe4968f904d. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/AUI442100056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d6186e806932cc6368d1c04b9fcc9c1ea282e1b456de0bffa9be1a29ea3643b. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/AUI442100058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87030ac591b0ad08034370a99bd904a394daf8ba261afeeb3e9cf6e95f751a0. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/AUI442100059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2c4e6b8c81d22dc009478512d6f2c5221320821c06b6fae3255015cf388157. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/AUI442100060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4889571cd7e9d70e5a1eb4a8bef9a1d835166a805a64cecb6b35bc371f974022. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/AUI442200055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa39c93d4ef20eb70176c2068d358a4efb2d2ecd952756d82d0b2245ca301e1d. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/AUGBT2310826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1e1a59e6d21bb65815d596130680f55b25561d55d703129ccb59eec1412709. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/AUMEV2454652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c484a6d530bf79d1eafbce3803a7e348a834e4ccf8231b0da7abb0614d82ded. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:17:25Z), 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/AUMEV2476423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216eaa037aacefe5ebd02ee8ac3f25a1cdefe333fb3e3216af9a186ebe66dff6. 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/AUMEV2476424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb332c72fce236317289d254a78277a7790ef35051c6759f33b14c0b6890f2fdd. 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/AUMEV2476425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a15aadec117777cb56dada7e7fae109e77d248e13bb977da16a2d15e544de4. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T10:21:31Z), 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/AUMEV2476426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa39c93d4ef20eb70176c2068d358a4efb2d2ecd952756d82d0b2245ca301e1d. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/AUGBT2310826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524bb2f33a6d9c73755d9ff242aeff3a705e5669f66f952d9ea136aba193a9ac. 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/AUGBT2328129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fae08768a7fff9ca7279f1c9e7e436811b6fc5827167ecd8e36b0af4e3dd759. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:31:05Z), 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/AUMEV2476429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f928f2677160e9265fa85829442313bd1e38edd72c15adb6b447220c0c8a74. 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/AUMEV2476430.
it just don't feel like christmas anymore
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5310b2badbb8602de552bd81f9509e937e3ca6e2225d6a0fbfdbc9da2ece18. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/AUMEV2558491.