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 0xec788d4b78ce590a7fe0f9115cfd89bf5c42c4d2a16ade6071f4b0f41fe19cae. Chain 2 (Bitcoin): anchored in block 953627 (2026-06-14T11:43:04Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2ee35eb5-969a-40c9-9adf-99ec60e054db.json and https://artists.proofprofile.net/proofs/artist/2ee35eb5-969a-40c9-9adf-99ec60e054db.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 0x53a9300ce8b847951ab2bad8c477005690af5bf2f5a59faa5bd6cf3a2e24732e. 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/DETM41610674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cdfee80e593fa78b204bcc7913339690b3e94ef324498aa1abdb09f446cfb5b. 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/DETM41610679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de53804c343339bf02569c8582b4b1e25826da54eb2c18eb20767d899e4d990. 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/DETM41610680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d0f4f1cd57d7b06daba7907852f0e86f360dc441ee67b009fba68ded93d8ee. 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/DETM41610681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d191c2193545c76279b37678c034dd833b4887fb158f3fdec72910b3b7b211. 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/DETM41610682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67158d294700c016a980b68189d92a23a6169256c06f7fb5436947f47fe48df2. 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/DETM41610683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7156b5c6fb8ff132a18be57f8b94976a9194fd3474a1eae170037fd4cdf910. 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/DETM41610673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a798ce8dd87d493e6684ace026cfe3f87fd74101071179c533084e4d60086b7. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DETM41610684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a44ce73c00d607b2f070b4a984910f5b7c283d6a2371f8254316f4b6f53b5e8. 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/DETM41610685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe144a723ce13822e89d6e6e34d18d6df3aaa468438d5af7247a0111dd2c14ca7. 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/DETM41610686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca500303d6bdc8d7b6eb905f25dd656d15275f44bf243f68401e69827504e9d3. 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/DETM41610687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85af605fde68f97c22cec63c85a6403171d5dd2d64631d2c1b2c44a4d4dea9ae. 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/DETM41610688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab862dd21de79c7c95fef96c15513304988f0edd87c3232c27ac7cf74cdfac0. 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/DETM41611020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3df00f1cab24a0190e487fb9bf2a2e9b3c7b6255d902fb5d2d53999c08b18b7. 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/DETM41611018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbef02460b2017ac6d6825f9fe9a85b9e4578dd78a42fbd7132672d58b6ff5eb. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DETM41610767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95f7e35880f86d31c66adcd0ec7d1d824a5a82a085a8227d24973fc076b2a78. 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/DETM41610791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a6478ea1ec2f66cabf8ec7bc216740031df30a0f6b43a97363b2e428db4287. 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/DETM41610793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24dd49a50a94dbd7daeaeb62fa1ee155e8308412428dca15954a095899d29ecb. 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/DEQ022105748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbef02460b2017ac6d6825f9fe9a85b9e4578dd78a42fbd7132672d58b6ff5eb. 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/DETM41610767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c70ee3ff1e93f98797b95885e3609cc2f6d88b4c7182a5384c312d52e49da72. 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/DEY472086247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf732dc855c062a90a66a97214ee68d3885009ca72efaec2986864fe3fd857d18. 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/DEQ022111336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24dd49a50a94dbd7daeaeb62fa1ee155e8308412428dca15954a095899d29ecb. 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/DEQ022105748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x074addfb589fa295f7d49f54d263dd2d78785ff9e73bc0edbf2c6fbe8ef7f1e8. 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/DEQ022111341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a8f938a50709a181d581e3355c500f8b435ececd6271ea38994987e38cbb0f. 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/DEQ022111342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762cc5348051642ecd70882fedc46aa9ba9acd081c4d31538af3e8aeb3c29ecb. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QT3F22478524.