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 0x75f24d20645cf884bac65def930f863841d9711023c61c99e3861540f1a94144. 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/94cc318d-6948-4f84-bfee-4420d349a7da.json and https://artists.proofprofile.net/proofs/artist/94cc318d-6948-4f84-bfee-4420d349a7da.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 0xe6f4193e4748360288b938c01f04fc6040acd90b48452682fa5c77b0c327dc06. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/QM4TX1997864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e59d433a718196a52734a9917f82eb6beafc9e9ec3f33406d8686101d0859a2. 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/QM6MZ1950335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf986bff75a300c338de0b847579245cdbfd5fe92f8f7879370728ad2c6d7f2d4. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QM6MZ1950336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c55ff273b8ff9c73634a9fd1eec55d22bec213838f55fb4d6006e55705bd095. 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/QM6MZ1950337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5251708d06db1b190cabafe228509045625688b5aa9d591dc3505e42a15b9f10. 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/QM6MZ1950338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae19b2a682c81c4d8ceb63fb59a03caa00a1ad55181b96f5282e3ded3ad494a4. 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/QM6MZ1950339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb89073d6f1c8f8af83881af2190dab1443de335f70f212a6f1814c01845dae66. 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/QM3JL2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641e48e8cb6781e74966c01eb693d177f2c852391979a4f91b7af662508feeee. 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/AUMGB2101062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe517c32d8b9fd515539c03653598755c26b7240d1298d9a01131fde7d50608db. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/AUMGB2200110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d2ddd497f924fd618a5e2bdb448a002e999191db1b8b21b7700ba7fdf2e0f8. 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/AUMGB2200742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde99936a0803fbd79ba336646f96ade429b17851a91be1409d2001492f6ccac8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AUMGB2200400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495a865821d8e4bc973384777a5f4a71fd02ee70aede1ea56828f809ab0d2bf8. 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/AUMGB2201224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e6c84c30881a512f8465e39fcc40aa33f7602f6d6cc2fd98ca9fa3de78fdde. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AUMGB2201225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2294b428d75218772a1a4364fba43b6943db5ba0eb277eaf09d4f660179f178c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AUMGB2201226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30ba4ea981a68fd2b0c87b67990106d9fd31de5664864f7826687ec54a2fc8b. 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/AUMGB2201227.
Gotta Give It Away (If You're Gonna Keep It)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587dbaa8b501f447320198d679c7cc0d2270d05044876c4e7255ccb8fb8cf3cf. 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/QZHNC1932077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5291aa25314801075fc70a1635c91189e76aa948f2ae6cdb74f78cb185290528. 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/GBMJG2029368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5291aa25314801075fc70a1635c91189e76aa948f2ae6cdb74f78cb185290528. 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/GBMJG2029368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745ba66baf0bb02e383b0f58c2ee9dd898bdaf1238c761afec5a70bee7cc9895. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/QZPJ32174086.