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 0xdce71c2d6c6f331d50d9fb60ed0f75ec039315128243e699c5fed160347e5b5c. 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/60a942b5-437d-4ed4-b56d-36db3b6021a4.json and https://artists.proofprofile.net/proofs/artist/60a942b5-437d-4ed4-b56d-36db3b6021a4.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 0xe8685b2ccaad8a25901a988824779206acc9b4253ebcea86f3127f3b52f9dab4. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ES64E2312845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fbc8a42937997c203deb26f2d15d8361181df9c3462059f9751852cebe531c3. 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/ES64E2312849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477edd5535b75839d70f06baacc9b537fe5dc21ab7ca5149f176d8ee12a8adb9. 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/ES64E2313078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d3303b28be1ce85a3ad25e7b4010edc3ca9a0a9a77357f5b3f7538565e1813. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:51:40Z), 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/ES64E2313077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf517840214b971b95956ca08d0264b487a9ac593a41ada3ba2610af01238762c. 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/QZZ662302138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c0767f75d566bf584653beda475c0ad506bfbda9ac6e571623cfb28f63b8fc. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ES64E2335180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35b8b7fef2657387069cf4e264be090fa6b2847addd38b730fcf09930abf087. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:36:57Z), 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/ES64E2339646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e91f57babecb2f28d9dfe6db1d515bbe13af1b996b73e9bce44018ce8fa114. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/ES64E2453748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6edbca5a17ae9098611ce442bacf7d0768a6a576d4c2691c21389eeb6b5ea20. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZZ662418063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56e9fb715d61b8c7d659bb7d0b7ac67ab5353ac2f88ba30454371b45346c558. 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/ES64E2470983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19c9164aeb78f2d2d69ccf5117e492223ffe56684c3b0d7ddfcbbc52755099e. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZZ662483082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe977007822292b9bc15b52d74d61ce563c26fae83a4bc288d056c259956e50c4. 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/ES64E2473014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa1125cbddde686a974c47c8768b88f8abeaa0e30b6f76ed54fc461b5d1af6b. 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/QZYFZ2422243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd7be86eab40a52accebabad49410ff9d5aa4aba988a24c1d87a1cea1f2e2b8. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:45:29Z), 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/ES64E2487481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f601a261e2a4eb5ffc26eabccef046f5978db3ddbc29546398b11bb18fc7858. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ES64E2499150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8ad644d9e0b19b4042f94dec8a1adcaa2ed5db648c4f90cf160224210c6089. 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/QZWDW2453240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982ae722ea5646355bdbd11db135873e5ff3cc1a6e09a281c40b84def114928e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES64E2300048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794f28e9fc0f78da84d6a94adfc7984978019932ce547e2ae91be35fe05d8534. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES64E2479821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6744cc543b7e8c385c8d78a8b780c314abebfa5cd7894a561d810f7492557213. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES64E2457977.