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 0x8f9c2e6f175f77eaeb140566b04c25167a96bd7918ad2a5e8f074b54ce345749. Chain 2 (Bitcoin): anchored in block 953717 (2026-06-15T01:05:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/875abb2b-d32d-4aca-b809-73e40b44b5f3.json and https://artists.proofprofile.net/proofs/artist/875abb2b-d32d-4aca-b809-73e40b44b5f3.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 0x5d6b50ac3d1c768e61441665cfca425a3f0f2b9a41be0727dddc1b62c88575ed. 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/QZK6Q2304648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c794f68a93e14fc79a1d10f24ff49801fe8b00ceb9e0ad9ca2c78065aba0b9. 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/QZK6L2363824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c51b3ca0379917b27857dd92657d9c90d1a6b86cccc487b4bfc45bba2fcfdc. 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/QZK6L2363825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099aec606fea15884f8150ea3a04c1793e7501a26061a241d1e414d6d8cf1ce7. 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/QZK6L2363826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc34f828f021b835019cb19039ca017dc724c92deb5e6374e7e1e9b0a14dfe86. 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/QZK6L2363827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeccbb4531e05c4b2b71dc5549148f5f7e9424b6abdbcb5bebb3f62b392867971. 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/QZK6L2363828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d648040274a6f4262cb48eedaf8a86c71093d9fe4553b4cfdd4e3e2e069d44. 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/QZK6M2380552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ef6b1e7e4b35ae9c2d8fb2d82c11000a3af718a2500f2f0ef701d990c3cae7. 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/QZK6L2363829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71197ff9c8eee3e209888ec0fa3dcb43b167fd074b778cdef4aac57d3fbbe2b. 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/QZK6L2363830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d4a3d257e6d866075b9cbcad9709c6c97fa2590cbe316121631d3dd615a8b6. 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/QZK6L2363831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d648040274a6f4262cb48eedaf8a86c71093d9fe4553b4cfdd4e3e2e069d44. 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/QZK6M2380552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d6b50ac3d1c768e61441665cfca425a3f0f2b9a41be0727dddc1b62c88575ed. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZK6Q2304648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d6b50ac3d1c768e61441665cfca425a3f0f2b9a41be0727dddc1b62c88575ed. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZK6Q2304648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8568bd32ba849b351f1e840bf2e6e1be2ffb87f9895a3f92e43aa65839d794. 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/QZK6P2256486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92bc91014a0088db70b2a6b8d33be3a72549c834f258a449819a81c9ff8d7eb3. 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/QZK6P2256487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3df71d552fbdde0c73300a1d4e70dc226309eba1e91c54a8634a4a36f97a02. 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/QZK6P2256488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c1865d3c590e851c87d085163485950ad89198d06682edb33ebf2cb013c75e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZNWX2110459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880b127f492cfa0118a24535f09ce3fcad78cdecf895aec9dd512d89dce529b3. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZNWX2110460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2e18e4a7b4c63953a4e7938e9a4ae1017029de7eb61838196e2c838f718ad9. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZNWX2110461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1061df8b3888c9b27080961659e935e3652be2d420b5fc419eed024ee7ed2ec. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:09:06Z), 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/QZNWX2110456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f4b3f8c8264e24b4733e42838cfb12325267a7ed64ce6bb7627788c1542c57. 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/QZK6L2458173.