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 0x18908389138b531fe79fab1d055e46e048cdc6c617942ddf1b852efdef8defa9. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/04db586d-407b-4f6b-bdef-fc90280e93e1.json and https://artists.proofprofile.net/proofs/artist/04db586d-407b-4f6b-bdef-fc90280e93e1.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 0x6f04a1571aa2e498e536b28885931f634432683a863021a67eacc6f981a17890. Chain 2 (Bitcoin): anchored in block 957658 (2026-07-12T05:03:28Z), 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/SEPQM0610812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990d9f56801527c21083a489f2970d5a0b880717c87db832584d28527f23fa42. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:05:27Z), 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/SEPQM0610815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441101d9ac13bd9709b5d90f42a26bd11f14d6a5d38d1829015fdf4c5a57a0c9. 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/SEPQM0610819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16c3190930b135c027c35354e04c7e3e477d293649392e755baae8630e86803. 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/SEVFZ1917103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bad1d5e7a5715bfb9b6202825263188d10a7ec57dd29a484c622a1accb4dce0. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/SE7XW2500004.
You Take My Blues Away (The original live recordings)
You Take My Blues Away - The original live recordings
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360120d914382bf7e440d26b7e175081e47df36861857797f42740c0ba2eb996. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/SE7XW2500002.
Send Me Some Lovin' - The original live recordings
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7fe217ed7efe70f445805ee1355526abe3dff29e60ffa3050c875d1be48bc5. 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/SE7XW2500009.
Let's Rock n Roll - The original live recordings
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec29193fe2599405ae9011dda2269bd50022f7d5eea8f552556c54133fe28d3. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/SE7XW2500010.