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 0xef1fef8c11b0b7b92acba5f467e752911a2cce77248d8b3d383769ab85a55d9c. 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/dbedee82-4336-410c-995e-e2e8a24540e2.json and https://artists.proofprofile.net/proofs/artist/dbedee82-4336-410c-995e-e2e8a24540e2.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 0x792eede17e3eac4fc425e31f39f4e25eea2156170a9b074adac21ab8aad5e8ab. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CYA222300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792eede17e3eac4fc425e31f39f4e25eea2156170a9b074adac21ab8aad5e8ab. 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/CYA222300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0567d29e7cd493c2f9a3a1d656a77f17b077d9924a11ea339a25b76e71d0e23. 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/CYA222300133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb646c22f9f38542c6e569e1eb06fde3f86764f8b4a77050aadd2ee0371b9597f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T00:53:24Z), 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/CYA222300076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccda463b8e559541b2e219ad2960ff996461fac280109000cf44c17f15bac908. 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/CYA222300139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b28336334c6f9344f751fc23c82cdd4a1c76273de96eabbd24dfe0a08b1d125. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/CYA222300142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbedcb106ba72ebfb0f475f60638b85e84e7ad645eed466233de7c2293de72da6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CYA222300148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b28d44433bc4e7466f66306e2cfdc2f84aeca9d77e43d2cc1f432ebbad0f09. 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/CYA222300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7561d48affd1443d9844d17c8e8a6eb4d426b78e87f7fa5e10622dffd1a8200. 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/GBKQU2466678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6af5619da53a518069193ce526e6ae25614a16dfafeaddc49b1e5400171a23. 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/GBKQU2442339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0567d29e7cd493c2f9a3a1d656a77f17b077d9924a11ea339a25b76e71d0e23. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CYA222300133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52245b47872090ce6aae8da2706e27ddc40b92a92732de8ff5e0e43fc560cd9b. 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/CYA222300130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb646c22f9f38542c6e569e1eb06fde3f86764f8b4a77050aadd2ee0371b9597f. 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/CYA222300076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b28d44433bc4e7466f66306e2cfdc2f84aeca9d77e43d2cc1f432ebbad0f09. 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/CYA222300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ef99959f3b07d16c0d70f6b4a79b874b36525ef64411cf374110db7e818878. 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/BEGA42100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf9244c17166dba81702bd20467ac2735d4d7af98c8f671318879ec29b899df. 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/BEGA42100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c94839884c92e4ebd7a21e4390aac88a0c43785f1db3fe298567283308a49f. 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/BEGA42000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ce666e9fa6b98c0d2b9e9a79f4a4bfaa66b49e54100fed7b9a80ad98a5c9ec. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BEGA42000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de3692e5b5c5edfad7bd87ddec73fff2c44459477701902e4d05e294396e57a. 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/BEGA42000001.