1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x8931abc80283070c5032ac82f4f2287bd4f972e30d16b16411b1e9ef0f25ca83. 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/083e827b-ef21-4a72-9070-d02dc498073d.json and https://artists.proofprofile.net/proofs/artist/083e827b-ef21-4a72-9070-d02dc498073d.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 → block OTSBitcoinBlock must exist at that height 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 0x5bf83574212b5613f80e27520557e1fb68581aeffab9adfbca95d90dba7a8212. 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/QMDLN1803001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea08db3cf9ee8c68a96bb08568cf3cca1a4a69ac3eaaea28370969e21612b75. 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/QMDLN1804001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea08db3cf9ee8c68a96bb08568cf3cca1a4a69ac3eaaea28370969e21612b75. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMDLN1804001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1900bb7d2d9c8ec0054174a1dd9f80631768a7417a1b97211df46cffbd5001. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMDLN1805001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf83574212b5613f80e27520557e1fb68581aeffab9adfbca95d90dba7a8212. 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/QMDLN1803001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b2322bafddaba2778e26f75a7dd13cbba9473731f41c3ab01cb93706825fe3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMDLN1805002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449bea7dbe43a071857ffb6adfe766115323d58bf94045322914ced738dea651. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QMDLN1805004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6657efbc06f98284992724e3a90ed93f8dd20123eb813ae7b5b0a2a94d2b0306. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMDLN1805006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d81364441d8e6ba7c292ebf2dc58cb0238b34f0c70433c00998851bff655951. 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/QMDLN2109002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9bb11ddcee4014b6cc215caf49e8477016c5fd0dee67dabbbb1012780ddda5. 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/QMDLN2310001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617a6869d379c8677119c1cf47cc82a64230837bce719a77c6fdebe32b15ed32. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMDLN2415002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc78c7273b67c569975ed1f60aff5e0db2366214fde6a15d86eb739b3476721. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMDLN2412001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe7f458473d5a3e21f670a93434f87b3e9bf62044382ab659a734800af27d47. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMDLN2415003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d211c0f31cf0e6f5f8dc5c38ad741886f004d2d556d0f3a0939e5af6756611e. 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/QMDLN2413001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3191fdfb8289f9541484a8f9dc8d9e328d83b8ffa8c58c6efe13f86e8411c6c9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMDLN2415004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a3daf499de4c0d426532f6bb88291bdea9ed6a99797054d4dc01f4200f7039. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMDLN2414001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a988d45d7016ad48003456955f1dfe153eb26fc6349f1a32be24588d2b4b45. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMDLN2415001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc515f00f4e82d2033b5e5c4fff588a4c12cf6768abf3a47c298a4dee87f7dd05. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMDLN2415005.