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 0xafdf743974f9dac061474c9ccdfe75c347736f5b47a01a298be22bb7d382a818. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d2c78b67-fde7-49b1-a9f7-fc09c175b785.json and https://artists.proofprofile.net/proofs/artist/d2c78b67-fde7-49b1-a9f7-fc09c175b785.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 0x89d4e71353bae5c107649263f92095778d9686478da463f8b62564c5956748e1. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:33:39Z), 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/USA2P2362051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a38ffdb84213ad61eb95e24ab89d71ac7792973bf8b9d8da4138beaf01e5ce. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:23:34Z), 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/USA2P2362052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1dc0388ff29a768f8398ff6bab9d8db117b16c60a6e3d902f331c05886d812f. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:41:43Z), 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/USA2P2362054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c105a4f61566d9c36300d6960b80dc4a4b17d6a30180c47c5169602c2052ed5. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/USA2P2362055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58458f044ea5fb80f376503bef5e04dca182d736dccbae40bd2e31d72373903d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USA2P2409473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc2032d8d20a708d9201c269a664bc90a94f0c20a2fbceccf4a842e1f849984. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USA2P2409474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f43abc90fdc51dff63e5f521ce8db4be2ebcf17a8062e0dc4d48bc9629e2ba8. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/USA2P2409476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36cc6b9f70792ac4583ecd06d3966d96142575502ec00203101f07802cfb8ec. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USA2P2409477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd075a019198ba6d61004fe7281f0b0c2ded1e46698f473c76d1ffe4ef3f365. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:21:31Z), 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/USA2P2409478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f25bee243e425c0b87138ee78a21237c369459f204b1fb5a68766e9a6764f8. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USA2P2414405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f70d21db920f2be50fe9f9776cd294c4ce4c8d2c34aa183cb241eecef82664. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USA2P2414410.
Alice in Wonderland: in a Lullabox of My Own
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2e03836c946d9460d312c1574c02181beb55bca5e07766efb3dd595742505b. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/USA2P2428385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f6da08c613bcd12ef3a8171808a867af355817b40e9af0f5e7bb3424f9629c. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USA2P2443084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78deaec525f475f5be97a645d5cf0f20c2d4c14b00cf000fa26cfab7b22851f2. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USA2P2447835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16f63727e5ec63df11d0d2d5a84fe6b095bf2d8744b953cce2b1cddd377017e. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USA2P2435464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18191bbd39ab24b4a768089732c948b0c4573b235801e089e504fb8d22bfb89. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:35:13Z), 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/USA2P2458611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dceab1367c785f8b6bd89aee2f334d3f9f9cb9049378dfe0c446eb83414931d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USA2P2452594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f6da08c613bcd12ef3a8171808a867af355817b40e9af0f5e7bb3424f9629c. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:08:07Z), 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/USA2P2443084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18191bbd39ab24b4a768089732c948b0c4573b235801e089e504fb8d22bfb89. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/USA2P2458611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f2e66173299048ea9fb1f8bd6d29325739032a8544e9c8d7eadd6a6b324191. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T05:10:02Z), 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/USA2P2503406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78deaec525f475f5be97a645d5cf0f20c2d4c14b00cf000fa26cfab7b22851f2. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:59:45Z), 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/USA2P2447835.