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 0xfd6eea5560951f8c37246bd803200ead724812418e01113e3ffd02d7c447ba64. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/237903df-48dc-48c1-9d94-d0222c4ba275.json and https://artists.proofprofile.net/proofs/artist/237903df-48dc-48c1-9d94-d0222c4ba275.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 0x2e57ed601f0c94975595e2bdf61b39d8211d48a311be87512014e1859a8b39aa. 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/TCACF1521708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea705d32e7c733edb1441b9cdedfcbb4e98e176eb732bf8f38a6e4d3427bcbd. 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/TCACF1521714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec0c6779cf04c5ee46c0012ce06306d6f862423be8fa09248acd75624d83f57. 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/TCACF1521719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3780f2db52dfe70c42a5f93fd5fbbb7762e939b2b5fe3d4a494dca2f928098af. 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/TCACF1521742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ca03edae9b572cec8650728a39cb7c9c4cf0531b8377a8fca7110c0c3ae9da. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/TCACF1521733.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e8950163356a32fa542e0434f958eda2f8c184a2fa14aa6bcc789567bc087e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCADE1761083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcabafc796a48dcdbc1d76ff43f73b7d8bb7a9334deba3b357941b32a4fd9d14a. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/TCADE1761080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523a22fc2f9465df5f6f46c45b7d2c17c85b0bbe66bb709347878411565cd2be. 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/USDY41886193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c95c2d939befac9afa8f572a07cb9a6e731295ada32d28f368f7200583c32f0. 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/USDY41886194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e7845d7687a6a7ee5e9ac163ea76c6e6ce01ee48b35dcdba0899ca2f9d6ed4. 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/USDY41890644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e1b7fa95c1e564003fa6c619ce3d38df14e9e324446a1223a5ce9e1f72f6c0. 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/USDY41890645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59038255fa413f7f3c313977573f8f8509d21fda6d22a040847ff7e59b53d01. 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/USDY41890646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6747e75b403ca334e01a4ae468d94e5f79cd94da12cafd0c9386319c43e7343d. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/USDY41890648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1274954bec32ba90631e48d2a3bea08da37b1fdcf9da68a7b25ed88b7a746b4. 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/USDY41890649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5cc1bec05cfd837c63fd8c88203f5b686a7514cea2562a4fcd18d72bd0c0a7. 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/USDY41890650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d8ae269f7b8c34650be06848149aa25d80d8bebb9d61a2ada9c89e33772797. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USDY41890652.
Red Light (feat. 77 Jefferson & Zack Mufasa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0b0d794283d3cf826f467ebd7b9a59c44d8e81e8c5c390c90e24d7d97f2182. 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/USDY41610614.
Don't Let the Love Pass You By (feat. Cas Haley)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa26ab27f0ed1f134415036376c6900421a9f4dd6d5cb0d2aec5d86b8ee0f391. 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/USDY41610616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa425b49279b963c79949e9b32f5d6d6e623fec93e35081a6101623c9933c8b. 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/USDY41610619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3afa87ada5cdad19c3831f502b79ad5dd13c758a681c47e7b0324280f3309f6b. 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/USDY41610622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67094035cf91202fed2b0a8f6e20c27ca33ef9f39839aed99b4d3bf8255c039d. 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/USCGH2065831.