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 0x8dcdf254853286a505ac1837e7737651f3b1771e4483cb28f8d923f92aba28bd. 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/2b33fbd4-a725-44f2-b095-b5635f6cdf9c.json and https://artists.proofprofile.net/proofs/artist/2b33fbd4-a725-44f2-b095-b5635f6cdf9c.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 0xb255890780dedb0b944b2049a65118abcb5733a448cdbeecb43b18c713adaa42. 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/GBWUL1812877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a005ba78e502fecf508a0a5e7cdd30eec66c939676594b8797657b4d8c3053. 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/GBWUL1812890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x439c08e67e06b46bc54f41b14650a8e675834ac3e8ec7523717bba755f16d7ed. 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/GBWUL1812895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd777c3489cdc5a1fa2ddd11db41b06084750f44805135cb6dbc3bab7f76c5acf. 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/GBWUL1812896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c8bdb72cf9481b88c3a0e8c2da18cf8f6cc7d3de9fcc72dc15c4e407532100. 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/GBWUL1812897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf75e8ced191273bb7efe22458b547ba96e0e3f962f3d6cf58824f171a923e3b. 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/GBWUL1812902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014827e30471027624e159118c97ea58280eebdbbf3544ca500f19ca108cb86b. 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/GBWUL1812903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0840fced2a7b72bde7aa3b51f0290dcd6e6d9ae09d77f074af0eca4130fff975. 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/GBWUL1812906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb566a39b4a0ef69d2b53e42986c63b8fe92bc74965d931dfa07eee52ec268a66. 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/GBWUL1812909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceeca5ce5e816b2efb7f67eafd8b1ad5db522fe2131022a987bfae726e1d006c. 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/GBWUL1812915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90a0fa45dcd5f9f655a79d09b9350b29548fa84566a76001a9a999692f94d59. 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/GBWUL1812916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7a8fa4f7ad9870e9e457cc85f8bead71b2ffff0ad15674aacba5461a31bf89. 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/GBWUL1812918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a454e5491eaf8703723eb4a385ccfe4fb8b641c5e6eb0a5cb1b8745ded33dd. 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/GBWUL1813025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61026373d94b3ba0311c172a074e6f2ad840b09f135ec546a1b6c8ba67a60ca0. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/GBWUL1813026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe42b9be824ae6ea43601e53ba88c4f8d9f4403784449f950e61b6c613a30eae. 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/FR5FT1400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111ec20ce927a76d90ac518c5d0072ee3ca46bb9ea20f3a3b279dc097bf839e5. 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/FR5FT1400044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae832675fb0971bca0f91e0e462a9e3c7ab83b86675c6aa2eed05f567d0ef45. 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/FR5FT1400045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48061077856b4caaac99888c54c32cec1e97ff901cf8b52257859737c0e83009. 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/FR5FT1400046.