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 0xbb83c4f00ee46ae94db3f6f0a8a693d4ed281f7e99c0ee77c64a0e55865c6567. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fab2f493-ef86-46fa-82d1-4e19fa1f5d49.json and https://artists.proofprofile.net/proofs/artist/fab2f493-ef86-46fa-82d1-4e19fa1f5d49.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 0x8517ffca8bf5d95ec8dfb16c3f6668b38b6c19ead3a4327bffb9f264e3656279. 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/QZDQH2270351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d15e8d827f421e854beb29ccf16b58eae79319822eb684dad73f5d3472b770. 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/QZDQH2271282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb209e03ccbfda6f190a00a49347ba0246f8e53c2d817daddb6a81b82bb03196e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZDQH2271284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500e144075b8d1c1d4fe17c7ec7885fa5cd6989921d8daf0f3a5ef9eb7c9c851. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/QZDQH2271280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd988c7171bef02c7330e9b21b257d5fb428037c08621d8fee25d28af136a52. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QZDQH2268565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c6836f21d407224f91f49892cdb88b559d5369591b9fbea5cc68e0255bfa1d. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZDQH2269443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec64fa5fc06ad07ab63df21b814d0a6cdd5ce2016de5871e12bb4cf3ed78ffb5. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QZDQH2271286.
Bienvenidos A Nogales: El Mundo Real (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae308ebe709ace80cc36b0d314d5cb518ff3709d30dfe4ae2c9339c846159bba. 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/SE62M2133526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1cfb1b4de7bb46daa54ec7d1e909958b86cbb0f5d2ff9bb70e66193330a22f. 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/SE62M2133520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf617a1705c1dc2edd2600fb800ed96ccea3f742db4ec05bb210efe8c900f461d. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/SE62M2133518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c83e4525b217d80d5e486b3e21089c7991674dc5431e1677db31faf37b8c11. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/SE62M2133525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f710641ccb29dc945f9f4cd14c08ff8045b8d4ef31031d1a307779608285f55. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/SE62M2133522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65052c50281f64e7a317e1d903f615881e837e53f6357007b68824631b4e468f. 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/QZDQH2261429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c44df2e35d0ab7b2fee2a9a3107f64d9096016dfee443863079f19a2959997f. 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/GX3Q92178125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9efbe3dae629770cfcfdd54f11ec777039a10fa361841e606cdf7c714396f896. 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/UKXN22111722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85eec2ae9e36ad42b14417877b938cca234da84ed8c80fa78b4bb8789eb23b33. 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/QZFYY2161804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7084dbc04cea81c3a25682a2113a246c86405e92a0df3bd4c2a4771f65beab30. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZFYW2162868.