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 0xf7efb96133eb31ddcf698870442c8af896f8ef1e846e0ae83ca0b12131349281. 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/59f7c05b-ba68-4a92-91b3-a8241d6c9396.json and https://artists.proofprofile.net/proofs/artist/59f7c05b-ba68-4a92-91b3-a8241d6c9396.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 0xe9f516dc2a0034e09a55e9f69ec81be781762b70459feef69a0b59e0a365c20b. 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/QZS7J2229060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4cb1c7c3e57fca4551da3c237118790213eb58bc266a4f71b7d64a5cea71bee. 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/QZTL92373560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9f37080620387da079c6dd3f4b9ffc179b1ade7cf5531243e76131faddec4c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZTLA2490281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa3913ba13cb24f4e822538e86b2566fd37beaeeb2ccbdf46ebd82701be64c6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZQAY2445461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd066d81e024822166453fc8eb0442750f30508c371480a227f47ffd657e3b6ab. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZTLA2497851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f516dc2a0034e09a55e9f69ec81be781762b70459feef69a0b59e0a365c20b. 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/QZS7J2229060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4742363852f5acbcad97f1e08c09998fd6c729dd9120ef97bb04815a3587b19d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZSYP2305289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4cb1c7c3e57fca4551da3c237118790213eb58bc266a4f71b7d64a5cea71bee. 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/QZTL92373560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d69df3fc33eb61eaa9ed353d767c7269b335b24c98d01b10d56a28cab9ca8d. 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/QZSYP2332153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1cda2297128318a3c963f68e26df0e031fa4aef24777fef0180b85d601485c5. 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/QZQAY2385167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc65e2fee98efdb3ddb35b474accb5a92fce6fec37822340961bab50f1f61f10. 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/QZQAY2334432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0192893109484b0caa85c5d824a4a91d0971356bf90e41dba23e5bfc267a74. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZS7J2409260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9f37080620387da079c6dd3f4b9ffc179b1ade7cf5531243e76131faddec4c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZTLA2490281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0912aaa7c26acb25206ddbcfd8eba9bd58fd8be477041d0939317e5759387c. 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/QZTLA2472593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d4fe47ff191b4bd6866b121525321fa8520b78ada84e68fba4bdc09eef5064c. 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/QZQAY2483456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c6568428bb246c006205d7b9a37f5561af27bffc277eafd519420ca9ca253a. 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/QZTLA2412580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d4fe47ff191b4bd6866b121525321fa8520b78ada84e68fba4bdc09eef5064c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZQAY2483456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e7f4d91100919c25d5519894258537172c1d74f2a86e990c643e57f1cfa1e12. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZS7J2305300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cdc9bad900c3a2c203ae9510698fce2ab3196923d427a9d9eea89ee72734533. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZTLA2404379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e7f4d91100919c25d5519894258537172c1d74f2a86e990c643e57f1cfa1e12. 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/QZS7J2305300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fda42279a447c8d1f1187bc4792f5d3007dc06077e55848771b2e63cc3b7f31. 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/QZS7J2322402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a87afc6b6a4bfe57d2c096c5440b699b21a7a40d24e8ca07002f702f561c6ce. 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/QZS7J2381264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21506a4750f9efcc4e89ee5dfcb613892b079c52d0293c55e017516e9b985db. 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/TCAGL2280933.