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 0xab8a9624173ab135401b4e87d4bf14a9b8ef4c44d947894c42960e1c768c4012. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/42501479-8a96-4836-ab49-f47bcb5cbb88.json and https://artists.proofprofile.net/proofs/artist/42501479-8a96-4836-ab49-f47bcb5cbb88.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Serene Train Clickety-Clack for Soothing Sleep
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 0x88ddb4ef8e527d102fb20bf119bab00cb993bbecc09cc55071321590d0ded542. 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/SE5IB2324999.
Sleep Like a Baby with Train White Noise
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bad73a8e578fd90991866081fa17cdc21740b3604e1a66995813e55a5e173c4. 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/SE5IB2325003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c37312741a192e8fc47630e187b6a47cde93f8ccc9d7f5b21200b6376c4fa0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE5IB1702011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6524eab556c01a4d07fce6040d5ac6e1a42084794bbae25cedd2ab439f3a6230. 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/SE5IB1702013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8a7655a60746b7f3836981601777d962392115870e5ab25a3137e113e92907. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SE5IB1702016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47379316516e0c8afdccb2be286d6fc038258b5767457e20e6ed45fb11b12441. 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/SE5IB1702019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce71aa242206c7cacd87814d8f0fbbdae7cc986344928a585c80a320fadc78ea. 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/SE5IB1702015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d51cd91bc80a81b1be4569bfdc4d7b7ca3f85da77a49b76df12607e66b8d563. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE5IB1702012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb383ab4a861ffcb33fa263905f5b50cd27aff6adc178f88b775f025e08c1bc60. 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/SE5IB1702014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2022b101ccbe5449b22893fd3d9c08ec880ab097fdf9702054c5f5537215bc21. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SE5IB1702018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905a39070f67413a12e79ae65d250946575238a7f404dab50342c416857d86fc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE5IB1702017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08daf4e2bbf8471dd2553dbc03c15aa67b94cc23cd8d29d8bf483714fe81490. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE5IB1702020.