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 0x737db4ade054993142d267f70cdbf25c45f93bea4b05d9bcfb640fbfda524cb1. 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/bf39954b-ab3c-4a9b-912b-2dc0577177ba.json and https://artists.proofprofile.net/proofs/artist/bf39954b-ab3c-4a9b-912b-2dc0577177ba.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 0xae8f92ac868bfba741300709d4e422821f73d18eab02fdffa084d6ab159c889c. 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/US38Y2309224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad35289819c7a0bd0416c09bcfd34f39d95cb0241aab3baa46f14c867b365b7e. 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/GB8KE2321788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996f2774766a5e7840a06b964a4112a9784d05e8db1bb8651b51f3eb9f4f4708. 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/GB8KE2303829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e354f04c6b1fd8957f84c556aa20928c7ee7d19f3fcf4c2c79a7ef51826ebba. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GB8KE2161101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e354f04c6b1fd8957f84c556aa20928c7ee7d19f3fcf4c2c79a7ef51826ebba. 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/GB8KE2161101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822784b0c7e11360595d64f90725d82e56f90d19e8091a5bbc5c729a509ad1a7. 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/GB8KE2161102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed86b29aff7695aad45995a357ebff63e17f3fbbeeada8cae9c187ed0d7bb4ec. 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/GB8KE2161104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fbc9ff2031aa86808fa3c2871e446a1f524ba1fe9c231dedf3e4ff51e5e584a. 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/GB8KE2151015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf045d923e94f2d53934e6413e155f41882df7ed3278d12542a216087cced09b0. 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/GB8KE2056738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7cd1de5ac3a253e0f5e5189d519bbe3a1f513294e839c35c2bb124acf682158. 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/GB8KE2055524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6065729d476e4a47bec4066ae2d0e7556c6c375935083c0b401b0bc5426a1199. 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/GB8KE1957301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1266d0e5e4946e6ffe549b64327977a22eb624d538c65ae9c2b15420f9be0e. 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/GB8KE2200676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef32c67fe5c6f8d3c22e37cca9d2d429d249542eba589bc53c109be329f41c5c. 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/GB8KE2200679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefab7eb6448c99892528f5c668fca4081d0884862e24fb582f631ad69ffb1d9a. 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/GB8KE2200678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf6dda3b49920021cc0dbae4f47596bbc657a475b3e6871275389fa58592b1d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GB8KE2150731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef32c67fe5c6f8d3c22e37cca9d2d429d249542eba589bc53c109be329f41c5c. 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/GB8KE2200679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1266d0e5e4946e6ffe549b64327977a22eb624d538c65ae9c2b15420f9be0e. 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/GB8KE2200676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458f51fbf668dff02f7f6f9d216f161c0361d3354e278b9c8387112d37c1359b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GB8KE2200682.