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 0x69122b62dc4a9bc20029340e094969162c1c8409a0de62b5b2cb71db69805f08. Chain 2 (Bitcoin): anchored in block 953621 (2026-06-14T09:42:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1edbc18b-ca18-4666-bf2e-30efc0b15b96.json and https://artists.proofprofile.net/proofs/artist/1edbc18b-ca18-4666-bf2e-30efc0b15b96.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 0xd9f04d47b049940f705c5c2d09082f9da27049090a073fd09c2c705b21d385ef. 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/QM6N22459137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa03adb91b196d00f5cb40f8b18f03e3598a1a39093a606036ee426d5c1f5d7. 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/ES71G2327344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1eebd98ecd667b43544b6d971a4e3520f54f65c7fb7d0bd2abb0da6d0086fe1. 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/QZNJW2361907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf256bf28e75b9d63ca7aa4a7379025d97650a420f102b30846421b9094181dd0. 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/GBWUL2373963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0f9f262998d2e5d5196c00d943f932c4da2553c558dfefbefa406f7cf087ef. 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/GX3Q92370316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a6aa6bff27df4908b89643f951740ca4819a101ee8cdf7331dd788454622ce. 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/QZMZ92387929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf13c9588438bbe70e4c269120ea297b1bc666f5e03c262a8631c1a300b77d1. 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/QZHZ62153005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cdd50d6191b06f1772fc97abc88b161a5c37a65c9f93db731bcba16b6029470. 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/QZHN72108889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41aa53acc4929795ee5f7df5f5ea757ccce3a241b24eecb2c48a36c0c027aedf. 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/QZ5AB2163865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd53ba41a7e5ed8b8c05b047417d85607af644053a61acd116f25bfee6f1c0f. 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/ES71G2054236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd19495d32ffd911ef1f1eaa66a62cf5a83e73e59a4765d0f131c4f37ff62a1. 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/ES71G2039941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20cc781f18d9efbcded86ea3fa372f0143e53bd38fd1e6645d8ebe52624d5cdc. 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/QZHZ42089350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666f5cfbe758743e2d8e7ffcf0f8f4e3c61e0b91ba1f99ed338983c3376f4605. 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/QZHZ42004710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3771b27d610bcc409157143cae87bacbc3b7d58f4225dcb37150b0f9ad2dca1c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T14:14:02Z), 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/ES71G1923204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab23afe913b939ff87d0ca05912974b722e4581571a1b85cc4347d3dbf69b3f. 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/QZHZ62012379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2679583582a5964fbb731a92b57f06acdc50b56c3b9ca1c79b3ee8892660267e. 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/ES71G1914046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf256bf28e75b9d63ca7aa4a7379025d97650a420f102b30846421b9094181dd0. 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/GBWUL2373963.