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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 0x65c6f7cc7486dc94fddd0bfe14621079adba47b539fe29e19f395776f4c9b04f. 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/2597ff3a-4090-49de-a3b8-6f74e54cc6ea.json and https://artists.proofprofile.net/proofs/artist/2597ff3a-4090-49de-a3b8-6f74e54cc6ea.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 0x3edaaae2ac2ba02c009654beea3e7b4c768b7f9efc1a5ad09c0518bacc37aaf4. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/USHM21953702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e12a46e7c9dd70df13ac101493126c2fc68afa264f46b59c1040a41a8ac9b3. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:45:04Z), 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/USHM21953700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2329aa87f3d3f8600e0d5f283e6c3be6a290de6321bc9cfbec3821823a8e99. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/USHM21953701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a46b21864a6b279d7c41af3dcc4afb58a7f6943adecb0efcc13c4577fe798c3. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/USHM21953706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc0f96223b509f773e351f49cc12d94b8da47bbbcaebb9b94a2b752fa5d263c. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/US28E2127902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ea40fbb4ae6f82e7c8bd4a0ce95494794d9182e5e4437b3a4f6eb1430694f4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US28E2127907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1545582e5ba395d45df67b44c999adaa94f3d7c97c236852ec412cd4411ca4ac. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US28E2434203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7554dfcfabcc3e68e42078fac23362fad90e270af5bcc6c0184cdc231a8cc5. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:00:21Z), 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/US28E2434209.
So Many (A Place to Bury Strangers Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38df50ce0af4f29ed6005a635714177daa50a0e5f4c45f8d712c476bac8b425. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/US28E2538211.