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 0x9eda1f3864b6d41c1a802ec5859936e5893652b6e9a73e40c3d89979462cfded. 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/64d2bf81-2967-4f05-b847-e95121e16724.json and https://artists.proofprofile.net/proofs/artist/64d2bf81-2967-4f05-b847-e95121e16724.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 0x2bee1fa86767c6db22ac11c5280e0fb8563f5363ab99ba57d4d20cbe0860182a. Chain 2 (Bitcoin): anchored in block 957526 (2026-07-11T06:03:28Z), 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/UKXN22152827.
Maracas, Tambourines and Other Hellish Things (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403405af8f706ba537bba58b22a2e46c2a2fc528d745126a5525bbabddbf49ef. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBKQU2324590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c77d6344f2d67cb2a5f190f5fad4ee4ddb24103ae2ba077b15a56f866d43f9. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/GBKQU2307952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697e3582f134874d25c76febc65035f311177d2e9fca44fed62744454427056d. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/GBKQU2325632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea58201fae5ad7e264aa6b1d491471f906343e1e5d6cdb6bbc652f1bf584ba39. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QM4TW2533492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee4f1d72e3201d35f16b2c8603e41a960d04be165db2c075820a73e2200caf7. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QM4TW2533486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5ee26e7f565c22506f5b1f1fe58f21a58cba76be1564e1c17444cdd51a149b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:10:07Z), 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/QM4TW2533491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea58201fae5ad7e264aa6b1d491471f906343e1e5d6cdb6bbc652f1bf584ba39. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QM4TW2533492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee538d273143add9ee427b4bdcc20a9fe149e938130ae41b50d903b60f8bdad7. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:24:48Z), 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/QM4TW2533495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20325433387c91700dec69bc2322344c1663e14635740b2a6562c308a8edd311. 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/NL4CP2316431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d707dc6c7db8dc2d76b668f97655100e545275e6b0befdd1d429c8558d91f2. 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/NL4CP2316434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5052287e458ca5ba36ecf75926ccc4ba496c4ad78b99d161cf365f02bbe25297. 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/NL4CP2316437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2dd2dd24cb23d29c0443fbd9a4a9bd0c96b6eaba45fe2269db19609b279af8. 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/NL4CP2316439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20325433387c91700dec69bc2322344c1663e14635740b2a6562c308a8edd311. 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/NL4CP2316431.