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 0xd89e6a7b5457af3d6ca22da192161333fe43b8701c8c73f5db1bf8758158f589. 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/cf2fc1bc-16f2-4319-becf-352eff9d0eae.json and https://artists.proofprofile.net/proofs/artist/cf2fc1bc-16f2-4319-becf-352eff9d0eae.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 0x51c25bd745633d571d7f3cf0da1473311b433e607ab26f307c06ec380cb0bee7. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/US7NV1800229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4054ad9621b81d5c1eed2c49a56d731b4bfa3aed2adaa8c5dc4a723c94d58c9f. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/US7NV1800230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a229499c54379128bd17b60c6549ebafcd030f4516da3bba1da7d3d487fa25. 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/US7NV1800231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948e5a166418d3ba8e76d54b86e05d578447fb5f2f51ad5284034e80841f1566. 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/US7NV1800232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff7f38fcb8c3e491f067f04dc8cfe567b6caac667b33ebb94b5483e3ed1c29a. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/US7NV1800234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f0d650ccf662f0569877bb1c480f6713e8c28547b1fd94af631a3e7875bcc6. 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/US7NV1800235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68ab5c61cb32feeb6309b2f3f24d6ae27f330965d349b0d0fd417182ba8ba72. 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/US7NV1800237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e53b6f88d95c43e02b2b870fdc4c7e29be11215cad41238ccadbca345ee373b. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/US7NV1800238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9bf03d41d16002c2a43ae2f5d7d8855d725d05f2afb658315db937f562c024. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZ22B1937083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3587d575f78644ed522891eb591c270dd7a99ded168c4347ab575c5ed2ee545. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:30:49Z), 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/US7NV1900303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0dd368b7f860a408744362b295c2f94c558f94d19e7b96ffdacf3b5d7aaf5aa. 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/US7NV1900319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400a40ea9b43d0753127a95033a504d6d4bf12f6c5eedbec789119b711f7d513. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/US7NV2200406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xababaa751be5e8b0d661b5cfb0b15484b142c06b9c0bd071e8c7c18200882a72. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/US7NV2200413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5344ad3e9790860f2ef562c8e3fc898fc41a3b57b05a5ce283933d01b9f37c4e. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:02:00Z), 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/US7NV2200408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30e99fe5436b85382908c1f63966a60b350f27946104f6f8ccf3fa726d128d2. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/US7NV2200409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400a40ea9b43d0753127a95033a504d6d4bf12f6c5eedbec789119b711f7d513. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:40:53Z), 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/US7NV2200406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xababaa751be5e8b0d661b5cfb0b15484b142c06b9c0bd071e8c7c18200882a72. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/US7NV2200413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b1a50c52d6018178a65b6f7242cd4602ce6a75dba52d093c14094e5b633644. 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/US7NV2100389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0993d119e84378cfffc79ab4c664e1b61c36cd1f4e5033acb34284c3dc32b38. 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/US7NV2200414.