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 0x00af9bccced1cbec9c750d1a4cbd464024a087e3e89036e25ec3a75001516ca4. Chain 2 (Bitcoin): anchored in block 953907 (2026-06-16T07:39:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1627fb81-261d-42ae-a96e-97065e3b6040.json and https://artists.proofprofile.net/proofs/artist/1627fb81-261d-42ae-a96e-97065e3b6040.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Best Of One Way Featuring Al Hudson & Alicia Myers 20th Century Masters The Millennium Collection
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 0xdd9ad65c4df6627d7658d49c9186d9846a6999be18a659323fa2690ca68cd298. 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/USMC18112373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468c9f87566cb49fd1341a3032f79c6800c1d9d3a484b8459169f7f81df57313. 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/USMC18010524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64dbf61b4ab3d14d05c5312973a661da8c94a5fa14f39235aa8f0f2170004e1. 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/USMC10110228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187332ed098babb5a7f280876678a3bc9f1d27d81da48a5ef865b118c3007cf3. 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/USMC18415077.
You Get The Best From Me (Say, Say, Say)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1046bcea2b6ae287ad84cab48ad1b283da3c603bc981374bb36164a97ad77ed9. 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/USMC18415801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4713e94a42c77154e3bcf9d413a5eba20e52f6687c7a53dd87db050e10d3f332. 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/USMC18011082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d19f0bdfaf75a12c741469aa757bcb1b49b439cbebfd8956561bd9c6519e55. 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/USMC18112005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99bbbf8cc8e594c51dc3b66c5fe9e0d6877af2576c1e86fcdcf70d9df810f59a. 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/USMC10110230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9cc2ce176fbaac026946be2c629c56da9c9478ee8fa15ac23759f3ce7c65756. 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/USMC18722517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aaa912e3337e26f1e8e72e18ee0b9fba588d5b7c17b8a398ac5487a7eb012ff. 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/USUM70502523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf4eeb4771cc9a51833549f8b6594bc72b476158eb31d931932e2bd4a89cb805. 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/USMC10110225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5094a9813e21a2d401d558af62c76f36f17e56bc0dd08d0de133546dfa0fa786. 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/GBFWU0300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c44b48d70ff6f66b5fea3e505b7bb195e733e172d2f3325b871be02aeccb4ef. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/GBFWU0300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77efcc63c62815656cbb19fe2826248a107bd16d453ed0616978b36f96e3753a. 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/GBFWU0300037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436a67d242536baf05a003b1bcb9c7f83f53f6024673b83302632056c9729bc7. 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/GBFWU0300033.