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 0xfe5a7a6be78af60ab2d32bcc01cb636be5b1aa6a30106cbabcc4fb897a3edc63. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f4b63676-d375-4a66-821c-649e0bccfa4d.json and https://artists.proofprofile.net/proofs/artist/f4b63676-d375-4a66-821c-649e0bccfa4d.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 0xefcd64eeb8258d9b0f2bbb6e380163966c441ecd4eda852ed9318f1f0c22e2c8. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/TCAFH2060607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a814cb9cbf0a36ad947b3e5ada7d1cabd86b6913800416a180efedc83595f0. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCAFS2160969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3d36b53c4ae0c85c98d651becaf9e111e91cbdcf271656883fa34967ece023. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/TCAFW2161539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c083b1467391597af0ebac44ad96fe3d5dce0f7ac821fcfc4187228fee27dee. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCAFW2161586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42af9dd16429ad3d40393cb71c73ac2a2d651ca1548c51b7650482e11c787a7. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/TCAFW2161640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8339a7c78f0ab5fba895a3131d31d19030ff123ba47289e532bc3d8342b942. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCAGA2201843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ed4b883c32da1cec99b89896ff8ef80330f86e450789902209ec1fa1fae6a7. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/TCAGE2220843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a171e93a445f5d6d22c0e320d2aa36cfda97e6e331f6d8f23a2d26df873c92. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAGE2226118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7a1baa375adfddc40e47d0687c2164aed08914dbb6c61cf3b29bc3ccac24eb. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCAGF2265692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50923a8613a1e51bd6778af41bd8c4fe35c08dde8f9a40aa1c04da317ef535f. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/TCAGG2282581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff58ebc08380c7048e4b61fdb7071f774d8989c0ceebf562cf026b00373803e9. Chain 2 (Bitcoin): anchored in block 957634 (2026-07-12T00:26:43Z), 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/TCAGN2259344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674c5d364c95ab9c9e2b8cedff0869e404bd940db17924c3eead7c90f9a8569d. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCAGX2316943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b94e3784407849ccd8aff5bbf61ebc1da4cb9bad0293f1b942c39e0169446c8. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCAHD2306742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df07eb90cf4aadf9d9f3c0c15c46761db0fca9d3764ccf1932452be9600ae5e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAFQ2149163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0713e07cdff3d02f850c73a50a47e7d99c1d2ce60d4e269ddeecaac747fe18b3. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/TCAJW2537970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9737bc09be5c7d729d10a97dd25f4a0953cf6ff7bde986e2bb5455634dbe7be. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/TCAJW2537777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40914dbd12eee72a38008e34ed88893f7134eef3e449320478da7633006e2105. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/TCAJW2555495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3d1879cd0f7577221f264eb6d705590310024994265b5cb38d1c43d40ac3d5. 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/TCAJW2555153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a3b5751a0b1c6a11d0b68a6a5279bcc8e9e89a2f0a27fcba53082b0777eaa6. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/TCAJW2555455.