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 0xc1f7727bb69c3bd892577396b9a98b9e58c5f825c5e189da8ef7aabc11926350. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5ee5eb17-09e9-4dc9-972c-fa0405d30750.json and https://artists.proofprofile.net/proofs/artist/5ee5eb17-09e9-4dc9-972c-fa0405d30750.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 0xd3b5c70052a686fdcd89a9fb6a26d9caff1ced3d3560a6a78656bd2fd7f978d0. 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/US83Z2490966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f61a9c003eb6f4785005854a203723adbacce8298f172b96593cb3a20118a58. 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/DEY472375007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb71f11f04a92ec8ae03e98e083bac2e75130a75fa46f215089685ab1d263ad. 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/ZBF6Z2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff5210718e2159b64b78c101e05636461cdee516596183f054f3943fe6f7cb4. 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/ZBF6Z2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x569f70822e8bcb75867e1103f4fc0daa79ea72272f46d4d6fcecec5a704f71d0. 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/UK4JC2400138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b11f55fa880e59aeb31e3426504a9b7f3940cf3c0fdcb3a68f3f8b0eb0b678. 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/ZAXC72300115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x654f0517de3c6d96421363eef061800ad384894f5c3cf9f2908061fdc1ab010c. 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/ZBY2A2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258979d07df75c1b46bd41e3c72559586d1c4daecc6490efa81573ab0f3334e1. 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/ITLCJ2100221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec5c66878c4c227d337a9aa8efafa00db4005cd0a20b1f2db553aac24c1d5b3. 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/ITBVO2200187.
We Belong (Breeze and The Sun & Neil Amarey Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2b69a3fea81ec6f23a02cdf81feec9f19ef9acacce1dc1ff7a6de389be3f0c. 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/ITBVO2200186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24eecf8097ff85bb85633cccad320fd6d94037c4bdb91d26c7595645cd475d4d. 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/GBKQU2233094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c93ac36f88cfefaf51e776982006edca36b7bc82fc29378d55950e7d52df26. 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/GBKQU2233095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc1456a84494cdf37bba21c9c67cce969faccc2779c288320854a812a2f4ec6. 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/GB8R31800086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b5c70052a686fdcd89a9fb6a26d9caff1ced3d3560a6a78656bd2fd7f978d0. 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/US83Z2490966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d96bc1349a1b2a2fade7ac53b9fb3ceb102da3a46e02c46738425bcb182c88. 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/ITF3A2300020.