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 0x0ebb549c877baf9a40f19d9961883b2cbb507e8d533969fe1b8cad83158770d2. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6c5c03d1-abe8-48b0-9eb5-cec8e96c5c83.json and https://artists.proofprofile.net/proofs/artist/6c5c03d1-abe8-48b0-9eb5-cec8e96c5c83.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 0xe2021f87e8fe18eb5e7bf6b7186cbf96cf5208bd92a1f889d80c4ea97b7a9255. 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/MXH152400409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e65fabe139c2ec24d9e402640139d3ce4074e02706d67c825d1e222ce47d29d. 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/MXH152400410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb445d5e3a1e84ec985a505d08fdad8309698990ee0677e922f48addb79b2dea. 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/MXH152400411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098e0ebe32c00735cdfdec7c272b0cdc7f6f3224569a4b2e4d7d0af3a1f2bb6b. 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/MXH152400412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e93bdacb3f8ada1193591771ae56f7452fac0f12397252a6dc6559aac957248. 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/MXH152400413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc049d3ce6f5885fa8ddeacc6905abde963e1fcdc4a63bb05bb8557dcbce8e97d. 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/MXH152400414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955f9601438d422e88bf4467465b0516c2bc5ec667f85f186494c2081876b721. 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/MXH152400415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b966e5f0d6958c364ce27c9dd04b50eb0f72a2e5373af4bfd12cd2b65b31fac. 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/MXH152400416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567564d29fe141acd53a6bdc0c387724e3acc740f7693fef37fee2b29ec27216. 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/MXH152400417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8456a85ac712ad65245a9c8a56a919904e8416e7bf1bcfdd5bb6ff1b7ee6717. 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/MXH152400418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0763236561b0bf808ce6cb7f21cc745b85c8a1b98ea306b37716ae0b895632. 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/MXH152400419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab49641c3f3c840efedf5f2b3e73cc8b0768ed8e9f7736c80862128f9345c6b. 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/MXH152400420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc01e5ac3b71ccf9e87356535333bdc18e881f25c8b729edf2dc3e4e43c4271. 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/MXH152400421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51646c8f4ce004404f26d4ad8d4fb3716e3ffd690c0a6bf44e756a5b37dcc326. 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/MXH152400422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3fddafab730fc8871bb95fec2d7888ce3e8a8e55bdca5bd7053b23bf4504173. 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/MXH152400423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef398be9787a9fae290a2aa1d3558cdd65f88c955cfd51eda012af073c59dc29. 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/MXH152400424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4fe7cb85392a26614503aebb42b45480b45ce698e5b0e065ff94f48e2694ac5. 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/MXH152400425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93995fbb4ff12d27249afe5e833602838786bcc6e0fd0498f2ca4ceea4980247. 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/MXH152400426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe324325124afc2690f3b505bdb1c46a860f39436f66f29a87d9f8cb17ee838da. 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/MXH152400427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0886a9d44ae0463fec8d03fc5df77cc425e95138ad0725437794de6d92244419. 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/MXH152400428.