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 0x73f8468215ecbc973c2d1f0ece23cb1525ef00878b2dd661d5d9a430e0e082c3. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/06010448-961b-42e3-bc0d-05c49f22c1ef.json and https://artists.proofprofile.net/proofs/artist/06010448-961b-42e3-bc0d-05c49f22c1ef.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 0x880f0efb33778eaf4d1b7c7d8d69efc245c1b513be0d5dbdfdd530f573e2f0f8. 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/QZK6F2108384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08813287e706019a2377942e1c2aa2a1c02c4effa4f845d30ea72c50c8af1a72. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CA5KR2358504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ecee749859715ed21b0101fb646a3a9a1b84fccb108eddf198647ee41c6909e. 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/CA5KR2379131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cce50fae4ed44a0019cedde983bb1923e52e1c927fac1fa9a6632319abe51ac. 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/CA5KR2379133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08813287e706019a2377942e1c2aa2a1c02c4effa4f845d30ea72c50c8af1a72. 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/CA5KR2358504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419db8c364d32b15342c72fef34381590180cb6f9a28ef72b6412765abe53bb4. 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/CA5KR2045377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e40f7563efde9d7daf4728fa3660572c30fa9384f14a5e1cc3568037820c114. 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/FR10S1981756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6322317108bad197fbf8e47bf0ca71188d1b088d65f8e649038dfcf65998b3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRX202049308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd531ad549b4ceede83a5ab70ff499de301c7906a9527208e6310a62929802c. 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/FRX202049316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34847267ff2ded291212d75d31624b57aec48fdc434eec0ef39d85eb3fd8742a. 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/CA5KR2035382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b867104eee6ea13af04764da81e17ca7ab14df339ccb537cbaa2ef326c2c45. 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/QM6DC2097788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe754dc052361aab0291da8ff068accbd0eadca7e08e81bbcff2f9374e5b40a8. 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/QM6DC2097790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c865f3c83cee95d61f015551448f97c8a55f6da163937ae319bc9e2baec259. 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/QM6DC2097795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367495c2263715f2db06f0832835ac3d71f6ed8133d0e782bb1bef0946622337. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM6DC2097797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59f4811b1d77d46d6e78ed9c78346a25496591824d7df8dc564e1c40542ef83. 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/QM6DC2097803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd9341a00a02721ac8ed44e6577dce1e2facc0dc193b8a2a9204fc1b2ccec51. 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/QM6DC2097805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de9936019a091ba23a5572733cc7ee3b46928e14c76c55bc3a792529262a393. 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/CA5KR2379183.