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 0xd8ebf635bcaab7d30f9704b6534025be9d2e201c843b7f880e9eeb2945df4727. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aa14c5d7-b092-46a2-83ea-2f3eb2f25679.json and https://artists.proofprofile.net/proofs/artist/aa14c5d7-b092-46a2-83ea-2f3eb2f25679.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 0xad6ecc8668571c51253cfc0e6c483629f5a9ba173416051c10e3bdfbe50bd76c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:47:01Z), 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/BX3GP1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6e27fe051181159e3a72e886c5aa6d82f459cb671dc208ef30a94246ecc194. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/BX3GP1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5060d393a80ed720da3520c0134933c6ab080e682b9f5ce1555440bd68120204. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/BX3GP1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71fe150a4cd5c40529721f469118c42b1b26f50af3e05e091f84c942032dfcd8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BX3GP1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02dc8e614dc7251ddd21d20fda9422d43798788c71b262c0de994240f40f4aa1. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:07:17Z), 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/BX3GP1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9c97ef786c851eb8631d3ff2992c04c6525e853d22a161978491e3fd551530. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:30:24Z), 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/BX3GP1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669d6a6c34c1d2d1ab9357b25c98fd3b1949b1b9ad570efe1237c0677d4357a7. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BX3GP1800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc183ccab40ac9a2c465b4bbc9b3220ddb28ab102685d304e538d6d3752fa30. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BRAOC2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02dd459d89cae41d66acd141fcda54cf7d8f894682af1b5ad7ed193ac414b9ca. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/BRAOC2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a452fa303239d574e1a9e32b2f12a69476a5164e5e83a79b4639b7615f3e2d. 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/BRAOC2100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc183ccab40ac9a2c465b4bbc9b3220ddb28ab102685d304e538d6d3752fa30. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BRAOC2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81adb4b8c3c7e4782dd351c47d0dfec113b2094f98d3bb403aa8fd862aabce37. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:24:07Z), 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/BRAOC2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430eb3afb5278fb14f1c6e8e724674d1cdc5c78320fdc2545743fc4e73f17627. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/BRAOC2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150fd6b3f6e63cc2f1fd11db9c27592161a106e9fd475a88b5677a6ebd470ebe. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BRAOC2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92cff2ab3d1db5d23df715c4ba6618950cbe1fe13c97e78f108a399365448fd. 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/BRAOC2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603fabbfb9c05a26830f59b71abeafd57634836650be28e92696e27d5b327934. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/BRAOC2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ecaebbffeb7c40c1fe34e6c7c06516162e904fbdcbd8e5b2f249b63620e143b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BRAOC2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2e71fe8cef27b18f7de6d2b0b48a90b7c6c4ff5a434a94eba01754b5ee1498. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/BRAOC2500001.