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 0xfbd40e6093b1c7df1e35b6a03b7478fc0616070105da2ae41c7263c7bf6b0731. 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/e5b0fafd-1f83-4bd5-916a-527f9de69146.json and https://artists.proofprofile.net/proofs/artist/e5b0fafd-1f83-4bd5-916a-527f9de69146.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 0x946093cc8f2003b6a27f451c9f8d440cc62aea5b5fdf2cf062c979a44f56d4a9. 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/QZNJW2376189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533aced2b06c6c72d12119ebb558cb5330c88581cb96edf1b12f3a6c8201bdeb. 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/ES29B2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf625972e16bc26e01a49d6ec1f82de4482f6af087a8d4d786ba2473eac8245e5. 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/GBKQU2422652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e477957eae28b7d3b5201396923ab1dc242e0c67072118b43150dc76fd6fbe. 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/BEB682400157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0561d3d4c99a128758c91a1f4c1167296639229c9aaa26310fb046aab8222c98. Chain 2 (Bitcoin): anchored in block 957025 (2026-07-07T10:59:31Z), 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/BEB682300539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd720dd389685a1d3543841793f9ce149fed5c9ced3f61b59d3663724c2265455. 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/NLDD62300205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969bccf130d639fde1d5653ceda2c095729f39121f211a5c8439121661a988cc. 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/NLE802200459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1d5c311918f535eee8da48b0bf594d6df82c1a8da98d75093987faa637c81f. 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/NLS762200038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8940e619ee378e00247b79af0ee75809a6ae5fde2a817ae7171b715b7467c7b2. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:25:49Z), 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/NLS762100388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x051830503a7f19dc1fd8a356e5dca46caf9c8e8c200d197fae849e324721ca1a. 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/NLDD62100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c481fab3ce80c192a3c5b752e256d0bb2af4e0386889d45bfb07a7fc057d49. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLDD62400208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b75f6a018a1e88830c7f7ea186f2312ae630f17c88d3947c7e5852fa64a448. 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/QZNWU2273749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02128ffe6b86537e946325d8cda8255f0f69b8dbc767ca505d0127c851c61761. 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/NLE802200336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28813f5622c8f63474ce4289a384b1c3c4331e2c8bf423985833154ec5c260f9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BEB682400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a87c170b8c9a3b734eac1ab64ad253cbb2fcf649523cf7f27900cbd6de90bd6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BEB682400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6afa0c3e0636f7c4aab95d96ded983465b3bf47d65f1e377242966bc3b8ccacc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BEB682400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b7a0e573d789a426c9a2cde688ae285a0d5db61cd0a593ff69baa3a246842e. 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/BEB682400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7541238bd7791b9166fe192ab6de845166e439b70e55f4e79a654ec5bc56ac55. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BEB682400067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa44abd3d29520441b6a6d998685b950d00662a20294fcf97c214b3aa9ef5895. 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/BEB682400250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0179367b36d07d26624a9041c617540b0e27a4c7067ec173a4e61cbbbefa2d6b. 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/TCAIO2447198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8241d9a037dfd706ed806871d2930a24decb08ba0a375ca27e489eda5b5b202. 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/FRX452547571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b666ce8fdaa33bdb8e4392a8f15d862b074ec2f5f3642a5e6c341df857f4690. 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/QZTV32587235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974e4e0f2bd509cc53c196f262b1293bfd085ca20ed340b3ec57d28d0d487f0e. 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/BEB682500217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3039245a3347a9078dfadfabaf09df2465bb74c76990d5f402cce71506736115. 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/QZZ8B2431319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf78bc27af04c32b241b357e51d79300875cca34ee67cddb3e6fc954bd562afb. 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/QZTB62418176.