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 0xe4634e2c1ef5e18b1c239fa1c666fb9cb2e3cee20c62935cb8cbe196a002308b. 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/f25e60d3-b420-4bd9-851e-301b7cdcd6c3.json and https://artists.proofprofile.net/proofs/artist/f25e60d3-b420-4bd9-851e-301b7cdcd6c3.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 0x17be4b1b39625f627949ce342aa5181a782e6048b54d0789eea017eec7784721. 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/QM6DC1690696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c5c5a1e8c056f844a8d3202616c5761cbde0b679d05a002d13e722023397e4. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QM6DC1691024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894f8adc786ea1289b4d80db5df0bdd5d0c53bb0ceff48a2a75eb70b464546dd. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:01:00Z), 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/QM6DC1691027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fbc8d627e6ffd5c793c9dc5dafc81a1312acffa1098e94a2b8ac435278bbaa4. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:53:25Z), 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/QM6DC1691029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff63cb828073e9f2a304a13fdec8650fbb4951651b6b1d5b17bbef1576d020d. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:50:56Z), 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/QM6DC1691034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981f4db001fea4613e9021325a14ac7718c9bd57ff06a60e8ebf5eecbb6ab06a. 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/QM6DC1690258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6ca1c795853261b0419937961131492c9b1de2e93d5a27758a816711ffc93e. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/CA5KR1553812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cef3429d0b05c3b7102c046f224a26b3519fb85a042129c6aeca7de7be50c8d. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USDXS1703297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e788fdf3bd4e79e7fb490e82ac04e65c002d08b820897d149bfe9d5ac36a23. 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/TCACW1742905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb74717cdf00e91b1373f987fd7168b1c8f8dd18a95d2bf719bd8b318867d4d4. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:33:58Z), 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/TCACW1742917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af03d3a044660c31e5e1978bf645e85716e650d5c625702dcde0afe9cc3eda1. 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/TCADI1799281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b7466bdd65202211a4c7d40494c149031686aa67253092f0c1fa8d5c4fc158. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCADI1799287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b6cfbc260f5da06c73d77c608cb37ee78f0f9a44bdc9b43e0a361590d1996c8. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:47:34Z), 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/TCADI1799290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6dca37a4a6494b97aa35f3cab0f1ca99c357f6fc42053c094f2ada9e9c8dd0c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCADI1799300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9a6a28d154aaad2808847928a953cd65538450bc618190327ae116241a6acb. 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/TCADI1799321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480a6dec6c400400188275dc569a348c3032a1534d6bb7eda1eaa8621e73c676. 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/TCADQ1854771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f10614118aa173b4d44591a9697b5a4b53582b99454a6b38cf96e03ddabeac. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/TCADQ1854774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a95b2fd46f946c0debda28b0df92d7b8dd3dc62826cc450022ec3719b425b44. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCADQ1854800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025b995b062d8ca1db5dde7b255266003c2d48b77531fb554a99d07a40693186. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TCADQ1854814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa6f17fa0892c927f6c8ba7d9aee86edd87679171469c70783c2b46806094ed. 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/TCADQ1854818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0f8d929e7678380cffbbbc9e00bcfbec94a1a5d86d38ce58e3f8ec37131554. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/CA5KR1844097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2710b6d53236c7b037a60c5c8f5e1390df8e47b237966c37aaaf79df18ee2ed. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/USDXS1901494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7259e383f847f9bfac57d3faad0b28840f69e970a9e38d93ea8a55c25822661a. 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/USDXS1901496.