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 0xb87d2372c14cd1a15b633a2bed9bf8560421be09488f544ce70f8312e7566de7. 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/199ccf6a-a7ff-44d9-8f02-7988ffa019f8.json and https://artists.proofprofile.net/proofs/artist/199ccf6a-a7ff-44d9-8f02-7988ffa019f8.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 0x667f279b50f68fd1ca30c8713a786283e9a31785e73b00eb13fee49f328dd301. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/NLFX52100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25951e58550ab0001b7f52fbafe1487e48ff5b8ca1c37e85c19d163efa732ec8. 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/NLFX52100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4591e3cb007351767d8b195cbb8e237db732dad6108b6fcc283a9f2450c7a745. 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/NLFX52100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25951e58550ab0001b7f52fbafe1487e48ff5b8ca1c37e85c19d163efa732ec8. 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/NLFX52100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3baf044c75c749a9228366890b3b9aee3c6db86e7e2341f82ae4734f9a39de. 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/NLFX52100032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4591e3cb007351767d8b195cbb8e237db732dad6108b6fcc283a9f2450c7a745. 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/NLFX52100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25951e58550ab0001b7f52fbafe1487e48ff5b8ca1c37e85c19d163efa732ec8. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/NLFX52100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667f279b50f68fd1ca30c8713a786283e9a31785e73b00eb13fee49f328dd301. 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/NLFX52100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4788ed59755c550275f8b72645f492b20d34fce6e5afd97f96528a8a9d009bf. 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/NLFX52100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f1c9dcca47c6f44f62990425e606978b164e97bfa45991d8b3ebf529fbc368. 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/NLFX52100031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3baf044c75c749a9228366890b3b9aee3c6db86e7e2341f82ae4734f9a39de. 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/NLFX52100032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f7a108f5f40c8e0a7f8f81df5cb09c1ea89836a82a251f65db097f53810c27. 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/NLFX52100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42d2fa4d01693135f04ff8e879df1ef10c3cc85135254b4f71009e321f50809. 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/NLFX52100034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd923d4190a3988eed540f9639a96392cb2def93ca5b782ddf5bf03b1b65f7198. 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/NLFX52100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4591e3cb007351767d8b195cbb8e237db732dad6108b6fcc283a9f2450c7a745. 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/NLFX52100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25951e58550ab0001b7f52fbafe1487e48ff5b8ca1c37e85c19d163efa732ec8. 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/NLFX52100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1292eb8081bdaa5fa8f21ae779a7ad97de51c65e3ab24be354b0981f52b2a024. 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/NLFX52100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3cb0b06cb283cdf03d56265dee9a64ae8a3a384ed637614ed267a01ac02aa6. 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/NLFX52100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a1d72f025fbeb1b12766df21981de4b97b4afb81dd3dd93f6094e4313512c0. 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/NLFX52100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1e9cca50e5ad92219637ec96d8400aa71badc23c1acaeeb0c83ba2602733ad. 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/NLFX52100042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df787ff8cfacee7683a67725fb7999e913b75f35396b05a151eb2f3c4f7a21b. 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/NLFX52100043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e75984a4f6d9ca9b5ff8fd93d5e4a14e34ed4b8948021cc5a21f46d4ef4bd08. 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/TCAFD2075639.
Wilde Westen Presenteert: Welkom In West
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5964e6eb271c7078b9924cf59db9a976d46a3c024a5f4fd6b8f545bd779d43d. 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/NLFX52200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968445e71de45374ca49324b87d92b277c4544ca7845c9e1f3469e2926f2044c. 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/NLFX52200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae585b33b0f8f54b6a054729ca6720a3f640f7d996a233d1954f12449b31dc2f. 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/NL8SP2400019.