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 0xf3aab7fd6d5f585fa1d470bfae38590b1be4b28fada3a976a208eccca3242624. Chain 2 (Bitcoin): anchored in block 953754 (2026-06-15T06:45:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/adb8a49e-00b6-46a7-92a2-e57a81e49bc1.json and https://artists.proofprofile.net/proofs/artist/adb8a49e-00b6-46a7-92a2-e57a81e49bc1.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 0xc3424909628ae328075472388e6de349a49d6b19b45c10f39123729c3b6e815b. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/ATR981172511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7822f27e8a1f38cd200089e59a1f6923c31d696fd369779d40bc948fd1190556. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/ATR981172513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a849d029366a3584f8d332f8dd51e1ec21df598ca37b1c07da15f02a0442c2. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEAR41915764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa2d66a9c0a968507b215664b71f86331e07d271746c30bf67df8f10d67492f. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/DEAR41934084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0f36f5af426d532b83f5f7b5b553c8c7ed8b1e5eba16e5ee6189ee342b1762. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T23:01:51Z), 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/GBLPF6787808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f13b68c145cf04d099a676eff9ee22a311b074c8ba2d2e825e32f2d50972694. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBLPF6787810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a823f0e6eae05b0ac45c51170e42f0360127c054e29156bbe754d978ce3fdc7. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/GBLPF6787815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f769e2c796e08ccf3d40e195741cedfe00a7b79f34f902895ef2bd73349c94. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DEAR42468164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14776bf199b735737a474ac53b649f0840b3eafa507b3036a8e01faa2641c3c0. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:46:24Z), 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/DEAR42468840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded841af7c8d5c3ad19baff53d8ac6341a8daf2f7e365692049421f2103107b4. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/DEAR42468046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0a18d7e56344f1388964f75c7c6e2c41dadcb5840474b73dc80183f668df43. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/DEAR42468039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6c0a31b74fe0ce3a91f19b2f6899951fe9d4dcbe18ae36950e92b9972d9ba4. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEAR42468044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf5daf35d22ad63240d24e8f0fb74d3d68f7fb46701e5b527dd79350c457081. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DEAR42468050.