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 0xa066fbe0a95687d52547db29ff141b291d078ebb42f5485dfcd65d85fe460830. 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/3c1fe7a1-aebb-4978-a930-7c5be4a5a753.json and https://artists.proofprofile.net/proofs/artist/3c1fe7a1-aebb-4978-a930-7c5be4a5a753.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 0xe6f22a738812ce22fb19f4a029ff0abba2b00909bc318bdfa4f6fadf715b7717. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/GBKQU1313355.
Ultimate (Expanded Edition) [Remastered]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0fb4165dcece710148db8cd27f899191e46b8f28b83ff6693515642d7ba287. 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/GBKQU1649763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3053a05d43eabdb7348b337ca38716f73c48baa0291f1a316e5c47ed8abe1577. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBKQU1649764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4013146f079a1189a629f081669f5245a516d641dea0b946b7dfb2ec4505c720. 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/NLF711606998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8fab7a8fa484ac6cfacc4ba75ea75b435926c05819fee07b1007b2877d2892. 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/NLF711606999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8357b8c20b141d4103bc43d25fe8ab3e54f4874ee29b566ca6b1f38deba1f898. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/NLD681700966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207672898d970d015307874bde60529209d194a02317a2195e77df69efd104f0. 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/NLF711702959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f15e65ebc04e8e68209fdaa7032688d2164a58e1c79673e4fbe45e8ec9cdee. 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/NLD681702498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce743c11f26556e46da2c23859238752bace2a6f9a00238a01b5e1d1ed10241. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/NLD681802104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a79fdbf3c0abbc599c871c1276d9c4dbb723dc815996642675cf748c077023. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBLV61929556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa8b29a55e2eda819e419c2f0d88f7f9fd24f132c738a9d429857acd98fb077. 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/GBKQU2065375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d878efbefdeffbb7b3469db453e3ecab8a0af8d5d3dd42f10939d7b4e854868. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GB3W42000059.
Label Showcase: Infrasonic Pure (Mixed by Ultimate)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f24ec71a8b3a278644740f5d88740e8369e66d20f88e96e4458b3bd800c52a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBKQU2174007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ceb0449745c37dd543a2a83b8511b3f5e8be99b100a54bf249d3458eb0327c3. 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/GBKQU2425473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc937e921d49a08606e5850278449a0c6bdf23ff6a162da28a6c7b8a73586c27b. 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/NLD682001501.
FSOE 838 - Future Sound Of Egypt Episode 838
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc399a071b33a6144bef61d28c266aafd3ef47965a960ca0bc0711ad70c84ddd0. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/UKRMQ2301550.
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