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 0xbad0f136e800718524c89a487e091a39b94aaaca048947f5498d869e2a9bb27d. Chain 2 (Bitcoin): anchored in block 954500 (2026-06-20T04:47:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9b1a379f-3a7b-4071-9a3b-5992c22d6586.json and https://artists.proofprofile.net/proofs/artist/9b1a379f-3a7b-4071-9a3b-5992c22d6586.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 0xf2afc055888230e4a90964e3f587dbf63fc85c4b91c4afe3cbdcb069b37d0cd0. 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/QZNJW2339977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3e0e480553d38264c762c827eff6c1bdad0d5c4abb4c6688174fd091a23614. 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/QM3DF2299235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048a73ebbd2ac8c17ea485c3fd4acb6beaf7bc39d59ea09d6fab4313e97e2350. 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/QM3DF2299237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1dbe5dc361a4bac7230ea73ff2413fff0fdb07226f3a0e28adabd61e8ab94f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QM3DF2299238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef25de2c7611c705273c3a5bec05705acd940715322261923584a3ce6afd47e. 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/QM3DF2299226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5419916a6c4a754fe4048912ee688489bb7d1ed1a0ee4d04f4a85481bde93ca0. 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/QM3DF2299228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5e24c235e518f05e083e08ffc4ffab678223009b22ed46ac4dd83fd88c8341. 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/QM3DF2299234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835c33b78fa31a0ae9050c864d5e9cc799ac7701ef6dd6d9f58f8688d4179949. 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/QM3DF2299219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3852dfe9d7c2916957a4c2f519fae3066997b730b7c8e93eeb6008048c07f65d. 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/QM3DF2299220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ceab25f062360cf55532b3589323784be0eae990f84f5df65b775f5ca6a48a9. 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/QM3DF2299224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1fca24a998b913bf062bcbe9a31f12f4f2b6de9756fe2745974dbba9d859d56. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QM3DF2299232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce866cc4373938315a48223e9a75b6693f4866e89bf4a5850e8b5a130baf4ccf. 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/QM3DF2299221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d8f5c79469c43aa1edb6241c952592c79d56fd17ae461bd0bc333fd7345e83. 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/QM3DF2299229.