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 0x102f0a9b32dbedc378b2d10788d60a2a4c6e3aad52887ea1c53035737dcd7412. 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/5020233b-b555-4f26-b836-f86d97421afb.json and https://artists.proofprofile.net/proofs/artist/5020233b-b555-4f26-b836-f86d97421afb.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 0xa21ad490e401ed0b24fb39a055f653c5b5ba1fbd02d25623fc0fd9ac8e3739ed. 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/FR59R2467096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b6adc45f733b91d13249932932a44873f13b8b82144598d52db5151b28cae4. 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/FRX452416881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b71e9916c869e028f7550ae3ebc1e3c2cf8f16af974461ab464eb6aa1872e4. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/DGA0H2487786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42f456ae92f8140bf42e57b4e796fc531a71f3f11737fa97054059e1e36d925. 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/DEZC62104379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355334ffc293c9f95c72a4beb51084d31ae4167de51a94faec0945b2645b6319. 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/DEZC62101337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116c9c3dd079ba59c05d7e1d9d6da2fdbcd410c84d38dff5f7209d251b32ad8d. 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/DEZC62108972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b53371aa1f7dfbd7e8f806d25b73d56550ceb3167c3b675381332defd68b5c. 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/DEZC62108973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e8ae838a42e38d2504b7346e1e6b3f493f23fccb4e74015ce94d2fc10fbe20. 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/DEZC62108974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7096e61eeed98097375aa21845f9f4cf2d35add4711927e9635e7840d79d63e. 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/DEZC62107296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bbcd89922b97a86611e0bd6e8572d5e9e36c10267a469e5ecc2f56a74d5da8b. 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/DEZC62104378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51cbac4eaf1d4586ef7a663a021ade2a00c03c4470954f8a2e31114278dc4594. 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/DEZC62108975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc83f5fc717eec676a53870bcebed53eecf53702cedcce89116fb965a80dd4a. 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/DEZC62108976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec31a0b4c94264300a06496198c04fe94e157ed347d0335c897c81e07ea4ae2. 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/DEZC62108977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604781ceb2b860e57f3586b8782019a098c54fd2c6b72887d3c82f3f32eebc1a. 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/DEZC62109821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7096e61eeed98097375aa21845f9f4cf2d35add4711927e9635e7840d79d63e. 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/DEZC62107296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd63b3ecae8b969db48e4a97bdbfe714f48d6e174b5a79ba291382698e3dcd796. 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/DEZC62461150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ee895da8562a582e1960bafc6b0324ae1450ec3900953f2a3c9499f5494d45. 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/DEZC62457627.