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 0xced2b94f39bbe0f7445a237d7c519172160652dea47606a0a3158abec971cfdf. 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/e30994e6-1f89-4849-b2eb-0152ac1e71d6.json and https://artists.proofprofile.net/proofs/artist/e30994e6-1f89-4849-b2eb-0152ac1e71d6.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 0xf8d93271b1a9009406d359873403277e4f57d7df157de76861c6f65c77ce8893. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZNWU2560476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d56c27f5b7b86c97da21bb6f20d6b49dd6cb783b0889783c46fff4aab1c253. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZNWU2560477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c11ef35a8d022394c199e4859080d591769b48f737172935c244e953fd20cc6. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZNWV2537213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633cdadc76f54971822470248c326f05cb34b54a2bf839365f047d88bf00c1c6. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZNWV2594130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ba7fe4c7e681ae14d92f122fa12fba72370946d68ffa77d65951b691b67ee3. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/QZNWV2596664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b14a34d8ee764ae2f7cce2171886f5df7b2cd2155f3754bf543da7359013477. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZNWV2542260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8eedda319256c225fc9925a65aa145e298a48585adc164d85100f0c8c6f4f53. 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/QZNWW2561631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74acd2438d5548395f223b8e190ecc0cf8015af30a1c22260f57bfb7eeaddca. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZNWW2561584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85f7f37e4f23a043f7f8de525db87fe87a9df9dcb189c4ce1e5b6e58c2a3ebd. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/QZNWW2539768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3994d25bdb061a00d49f180634fab7fa7f1f6df15986ab72d18a551dd41f1a81. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZNWW2541917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c148b1569493d4557dc0b823220c19e4b851e365a3c35d9536ed0148d4af7b3. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QZNWW2565403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda90afd84b3be1737bf9ba4335781d83bb0e0526a90003b00d4388481889d04a. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZNWW2565366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e08b98c7fee25eec62823053f6f0f31d0a6d5e239382fbab3813cc22a65dc4. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZNWW2541837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd533b5010442e7171f95c17d0bc62b2f339e32d8a4f5869a5b8ce4598a60d6ac. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZNWW2565384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bce736377e48f1acfe2ce48976d93f445726b9a0082cfe3356bf3a07588017e. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZNWW2565365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb908a652ad809f719430fa6c6ed4e319526c82c238f7e669f92d7ac2e1d1634. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QZNWW2541919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3d93725ec47f50a85bd6e556529e1e9975232de3bfb2c11202eb41efa870ac. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZNWW2541838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0aa14e384d9695a61aa917cd668224f01f2796ecc6015cde9bf4a62793ad11. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZPLR2513346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc00dd87e456c40e27f7ebb598e588af6a074ade2c516679c072fc85e3e36131. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:46:52Z), 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/QZPLR2516024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381f6992cfcd4206648b8320c83aec5525fbb2ce85f5548f7af456c276571910. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZPLR2513409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce471a0062e42e778c167fb682d35240a820c259cfea9534c106f0876b4b9fbe. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZPLR2513485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b34ae8bca0f3e31aaf8af5b951811d92d7100be0896621321cd5446d458ece. 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/QZPLR2516023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18ff68d881cb6dd89867d96bdc35503af54ac1d08f42c9b32b92c1f5df1b362. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTAS2517592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb9c3ef965a3d805aa4c130b6ac8983208f280e41b254dbcd5e6aa277f8b593. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZTAS2587764.