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 0x2201e70c8493a198bcb55b35f7ae4449a190534e8a6f41d5ebd1a7f73be5695c. 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/494a1c9c-f508-4a08-b731-8501fb6da45d.json and https://artists.proofprofile.net/proofs/artist/494a1c9c-f508-4a08-b731-8501fb6da45d.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 0xb5ec3b7d1557dcbf77b3211843cf0db5f4d988315494d6c3c27fa80ed21fe723. 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/GBAZP8800156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9165563c2832b2b3ff5ceb329cfddcf2a332de65a67621a88f5399ce12f63ac6. 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/GBAZP8800157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6e19f211542568989a0ee6851cb3b54906fac32721a42b9d8b476c9444d5e0. 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/GBAZP8800158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6babe357fb58bf9588e4d8ed3f29bb101b1c617ade9bc2dccd7827759e358e7d. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GBAZP8800159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8b9f7868949a5e8bb026da32ecc4d9204b4eb321bcd86f0006ef79ab0fa415. 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/GBAZP8800160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcec3fb88d55cea315978658b0b2681744b6c45d480bcfd422bf51a3effa220f. 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/GBAZP8800161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4ebc474f729cddf027fd8308cba11339106bc54fba21cff287879886386890. 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/GBAZP8800162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee0da60dfa8ccd4b07c0305f630ab230e49c0887bfcea9196caa0f0e25f1529. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/GBAZP8800163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c913ed69d426bd6fb30ac366e906ed02ddaf9b0c020fc7d690c8e4a389537a. 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/GBAZP8800164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda81326c439af5fe7c3bc4ab3895d87f635070a91676e87df49ba7db2301a4ad. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBAZP8800165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a3e25d1f6de56454d3ae552f7c2bddd9499615e3220df52698e3c52db0d4ad. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBAZP8800166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9714328fa452892e3542e742d4ccb0ddf530e7f2a3fadaefd63c70bc04fa82. 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/GBAZP8800167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a549262270b2ff6978bedc8c6803cf2c72ae662a7d772e8597842ccac04b963. 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/GBAZP8800168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35118d8644bbc852a0097bb30397ac1126c6c2d0f9b618937d9a7f6c8b7871fc. 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/GBAZP8800169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9165563c2832b2b3ff5ceb329cfddcf2a332de65a67621a88f5399ce12f63ac6. 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/GBAZP8800157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ec3b7d1557dcbf77b3211843cf0db5f4d988315494d6c3c27fa80ed21fe723. 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/GBAZP8800156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6e19f211542568989a0ee6851cb3b54906fac32721a42b9d8b476c9444d5e0. 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/GBAZP8800158.