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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1202d2a368d5fa053d8105b16bed30a53035a252b1dd10d7da8fcdbb6bc284d8. 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/eac2857d-f730-4c4d-940b-a4ddb6f5b9f3.json and https://artists.proofprofile.net/proofs/artist/eac2857d-f730-4c4d-940b-a4ddb6f5b9f3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
En Privado Con El Chino, Vol.2 (En Vivo)
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d388cf69c45e74e306b9670fe7bd7f1f2b1effa7bd63b3c3c2ec1ab7753d44. 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/QM6DC2098665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3411de5e4780a8fee101bf4853651e5d22acee65d1a65353492e2dbde18fb3a. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QZNFJ2120052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3411de5e4780a8fee101bf4853651e5d22acee65d1a65353492e2dbde18fb3a. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/QZNFJ2120052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aad6dd69ae1a7ef63233c2e96146f788861d9e0ec9643995341097f7aaa0cfe. 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/QM6DC2088915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ed5c5622849463222412b8e53da39e5a439ba97ae1e68704c3e5c7f8691e5a. 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/QM6DC2088916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c6d451feada7c7ec94d2ff07d31d41dd19447da991b95c1973f9a72988bd5a. 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/QM6DC2088923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1fcdde03d92ecff32d66da6697230d346ccab0df22758cfe5db691a0f19ed6. 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/QM6DC2088924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf12db61ecb367760613c38b3899fbe232808d97d6d2cf823ef3fe8e9bb7d734. 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/QM6DC2088925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ed5c5622849463222412b8e53da39e5a439ba97ae1e68704c3e5c7f8691e5a. 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/QM6DC2088916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c6d451feada7c7ec94d2ff07d31d41dd19447da991b95c1973f9a72988bd5a. 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/QM6DC2088923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1fcdde03d92ecff32d66da6697230d346ccab0df22758cfe5db691a0f19ed6. 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/QM6DC2088924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf12db61ecb367760613c38b3899fbe232808d97d6d2cf823ef3fe8e9bb7d734. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QM6DC2088925.