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 0x44099ba41a8dd3dd19d20401b9542c3f6d27316e60a4cd1a0871412c711479c7. 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/be982230-f8b8-486b-a78a-a9dde59d7006.json and https://artists.proofprofile.net/proofs/artist/be982230-f8b8-486b-a78a-a9dde59d7006.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 0x0ecc109ab30a2651335fde67f75c94285dcd636c791c39e3479181172202b3df. 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/QM6MZ2395423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e761964cd6f09403a80b2ac015d0d904dfe9a12b9918b68f1c2c08416930aff. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/QMFMF2223868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5bbe2056058785bff7e82fa6b41490e279f6c246ec471bb432afd1da7f0ac76. 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/QMFMF2223857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3397c9b9bc453d7039c54ca1f3dca7475ce54c81b18a6d23606e27609876cd43. 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/QMFMF2223855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3397c9b9bc453d7039c54ca1f3dca7475ce54c81b18a6d23606e27609876cd43. 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/QMFMF2223855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5bbe2056058785bff7e82fa6b41490e279f6c246ec471bb432afd1da7f0ac76. 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/QMFMF2223857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e761964cd6f09403a80b2ac015d0d904dfe9a12b9918b68f1c2c08416930aff. 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/QMFMF2223868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30626362bc8a1876c0a6aa7a6dfa8523b30ffb3973cd0b1a80d069b09689e5aa. 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/QMFMF2223919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9d40acdcf43e8aa38702fbda283c1ba4f2f23a05d7717bca49ca0ce039db34. 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/QMFMF2223920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839ea8aeb363aa93c6c9902741358de49c7d7ce2ef6a6dc162968a9139638ab6. 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/QMFMF2223921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11996a3665a811d5fec50fefb9470881bdd59361fcb6805b1c9a158254a83e7. 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/QMFMF2223922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9fa5c094c68fd0f2ee9d03f324310c8bbabb0c3925cc01f60ca98eaa646d2ab. 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/QMFMF2223923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7783afbeeb4679c1f9f96e7a040052a8243e4f6da66e72439a841dc1cd083b3. 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/QMFMF2223924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875f76b48e06b3c73ca8c93b425485d9626d5629abfddc9467788f37c29486d5. 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/QMFMF2223925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56efcbf0842577a09d10dc34365d3b4c0df90825588ff40d0491f9c8e7dbf94a. 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/QMFMF2223926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634fc82f6a957b65d8af55408e8dae5822d9a95cc452ee8ac7db47f75fdec669. 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/QMFMF2223927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9d1e11c63bfeec12ec04f7b00d425d4b7e3cde170110d683c6f637cfafc8e1. 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/QMFMF2223928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9698f143c56e279be46ad1922f7bcc703bcb68ed1cca3d8fcfc2006d52e083f1. 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/QMFMF2223929.