thumb|Steve Bailey performing at the New York Bass Collective Steve Bailey is an American bassist. He is the chair of the bass department at Berklee College of Music. Career Bailey began playing bas
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 0x8f4359499f5db665d382f1de07d6df86a710d95dac8c0ad28a5b7f735834c36a. 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/7764e0a1-41e0-4ca5-915f-86207a14a6d1.json and https://artists.proofprofile.net/proofs/artist/7764e0a1-41e0-4ca5-915f-86207a14a6d1.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 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 0x506fa6f451820adc1cff275e05dfb32099d7fd54caebb5277db1ed0db5568600. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USL4Q0714221.
Crazy 'Bout You : A Tribute to Sonny Boy Williamson
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3e27dce92efdfe44226af171b7ce5aabcf83f0fd6485e03f9a0a6f62aa80c1. 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/USAPX2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1dec9fc740bf686507dea174d0acc17c0549bbd06f60a0cb4a678150d109439. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USAPX2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc11384e303e99e82c9e6565d7f9489d9374ea4b29728c64fcd4f7a35d966aa. 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/USAPX2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce5042d62844c6e69daff2b9ad5a31b9062b1d25f89c459333cfcf0ed799902. 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/USAPX2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8310cdec388a9ce002acb51f2590e227b25312ebe447bf4165496f71d28eee. 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/USAPX2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab8fd1c33598bf4a81326507f9fa3eff8f947f75800f6074049981093e388c2. 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/USAPX2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a13534697aa5036a36c5e82d0928e03bc6e27d7577cfee074a58a9ce2c7dca. 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/USAPX2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171082b1597743d4bfdf92e4fc5ef1bd14a923343443db397e34d4068fa7061f. 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/USAPX2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x158f7dbe001c038ea8afc3be3562aac3b02a4039155b443848af926a82916dad. 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/USAPX2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f6300d36b83ba986e12d03d229205dd4108464490ad1864ae4ec80ba02dec7. 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/USAPX2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865a76c73bc003a9a853164197d99dbdb093ddad8fcd7bbef66d627b31f8b683. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QM7281540935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90daf23bebe9d2676401f7efadafdeded4f6e58f2b5a8a43bacb1c32db29832a. 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/QM7281540936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecccbd5027ccfe3dbaa1b9601a5ce4fc33858d9791ac475c7a7d2d6bab8505c8. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QM7281540937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20db447fb9d8a3d5ac308e988dd25c845c4465730a85c5e08ba5cfe0d93dffbd. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/QM7281540938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872f0d442f1d8674487ca59732f5e624829cab0bb93695af516501bef5236fc1. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QM7281540939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc469eef957e18105a49d6ac9676abb1e0ee32b873e360f63dc5f22232bb19ef2. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/QM7281540940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43ff5090bcdcadfe4c758b0f14b0f3671331103a85398038f5d3365ab49f1a9. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QM7281540941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1027da02ed3c49abb4a9b638d5b65b640b011e5821c8c46fade4e7f2e0132c4d. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QM7281540942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9739a935de7dc7fbb1978b4f14ec8c8b3b6c1acc13cc2dbc28bb604015c65627. 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/QM7281540943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e397e525d70ffee7c6545931b4cc85058a714f51bafe81efd55f38b80a78cc7. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/QM7281540944.