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 0x0f0befa444011b9605ff0fc5364e6f29a5d0a92bd866571f4223b4f15fbab324. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/be693ce0-9472-47df-92b5-52bdb2b50764.json and https://artists.proofprofile.net/proofs/artist/be693ce0-9472-47df-92b5-52bdb2b50764.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 0x107f24ab8349572e9b674bcbeb1217d4eb39ea49ae647ad31d4e5c5d67ac9fe4. 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/US92U1910987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536d6d42d454f99071b3abf3729871275a1058376fdd5bf9da067faae5a2cf5d. 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/US92U1910989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30fb1c69db4de7b0f37943408a80805809e5347d2be25db1044aa2b5894df5f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USUYG1135289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d7444b8fb65415db8bd948d3de378dd5c842987128b255effe0b427435bc78. 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/USUYG1135293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb430e5631b6d282af12377b8af37a4bc84d7db766ac36e624b2b5b69cdea521f. 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/USUYG1135295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc354bfa912f3e8286818dae22d1cc7f1cf08c6c285f0e3ce47b65387b5ceea33. 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/USUYG1115498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8dd382555bdfcf387bce702d3b02ec0620e9a0254f3230117bdb7c386dc39be. 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/USUYG1115499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f5bdde3734e175aebb1fdba2c507fcd3efcfc3f299b872decf07e91475bd82. 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/USUYG1029601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60dd5de2d767f7f57ac376e8621f667eee2c5112d973d541051865640de77e54. 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/USUYG1030288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40e1b6a721c72ded2db5dfb726c24923997affaa372d847e765e0a69150bcf1. 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/USUYG1030291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b1709e71815afd0c1a06af590ada6f58f8f314b49bb5abd1fe7086956219a7. 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/USUYG1030323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35cba64694148ed1c92f721f5815f1ea1a021d8b50f2582f53454730760e4c09. 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/USUYG1030332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28055ad63aa982c12b86b72a16c1f7712f76c8bc0d28381977a36b42a093c083. 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/USUYG1030599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf177caf3b427c2885656a5f044d95c29bc4e7c5cd07f049fe1f0981bd41680ba. 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/USUYG1030601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6e6f69f83144475a630c6a3fe4552328739739715787de05af771292e97559. 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/USUYG1030602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e8907d7f181d11f0b246fdddd1abcdabfa46c413b474f3238546e09f2461a2. 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/US6680917080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5eaafa52a1c67872f78bf92d8185c5067b370ed1818f07e367b429022284ce. 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/US6680917082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ecdba8cb200cae3093b3dd0c00c59157570dbbf0ade03688d04a99d9f367c6. 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/US6680917084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89afc187dfd8f569c215d28e1745dd6b3c526f6a46be6ef3490260039d44b987. 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/QZNWZ2266025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76720145aa31bd74827907e2da7e5cf964b3f52deaa70dc7584703b1da355d0c. 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/US6680918628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e8907d7f181d11f0b246fdddd1abcdabfa46c413b474f3238546e09f2461a2. 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/US6680917080.