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 0xcb894a1d00c12783de3714779ec873965ca809ba684a6bfca11c1bffb114c696. 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/538c4ee3-5c6d-440e-bd75-ac0c171504e3.json and https://artists.proofprofile.net/proofs/artist/538c4ee3-5c6d-440e-bd75-ac0c171504e3.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 0xfefd328c9d11c97f6870e6e70cfca1b158c51070288982a9dae84478bc086bac. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USCGH1510441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e768bc7095a238ca5561b3b248c229749fca20009eb94ab2c82ecbf97ceac1. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T06:39:57Z), 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/USCGH1510442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e596047d28bab953e0905929fcca0e9fa839a8d96316385dfd3ef622409f7e. 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/USCGH1510445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8edcc5ccf040e15749d722249a479809b00b7ea18fd22983281c9708cfff156. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:52:16Z), 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/USCGH1510450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87361221e6182bfaab03d37cb6aaa9830b0c7f9c82749232d806b881a15be31. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:18:00Z), 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/USCGH1529393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7ba5d24d1d9368f2556194aa4ef01b5536ace40fc9c329eb8d8eb68dfbd47a. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/USCGH1529394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1621b5c910d43dcccab5a7ea78cd0894b2c9497336e8b26eb990e53376511d23. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USCGH1529396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510b538ea60c65491d92f0e004d910df3bc67d8aeb7cae5419cb5996673bed13. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USCGH1529397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ef6c0693bd807bbb00d31990c871fb05a7f7b0c378f7de3bf6ee9d902f6b52. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/USCGH1529401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509c0ff9c04f4d03f6b81d005fd21ef9d53cc9501c10d5cd092fd0f0037123f5. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/USCGH1529399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb805489025b0caaf124dc4b8b4eabd9fba9d90751e1ebafdbd9507729b00de7a. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/USCGH1529403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe8cf19d208f8d252c7bc655485d3579c99be696e75575d65387a9e17ca4658. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USCGH1529412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60dfbd07350e240b4db5ea47304b8a3bbe82a9a1b09fee5bd1f648dea902a6d0. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USCGJ1516338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64dbe9d90b995baa7313aa37f40da18d66bfa106268ba058a800b12315b45003. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USCGJ1516344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5f182cc8ea8cddd11952177b1ade958c473243371130e16537de8621dda0c6. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USCGJ1516346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b27fc43186585bae4093d9e530023c6d11432d679b2ca4a6acbde87d9bee25. 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/USCGJ1540939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1765291661de648d940b0dd5391a66e42631117860a2112349fe7104888d672. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USHM21525741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a7a176c5e503e3ab340772be4f7565d3553bb2ade0065f7fc658137f714d65. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:00:40Z), 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/USDY41580808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31fac47cad493e23c79370f5eab5e1651df6d5ec82d1821994aa38f35002b6b2. 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/USDY41580810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc8950c730b8cb35cbf843bdc83705cf4f17aa4cf487293b3fee2bbed5b17b6. 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/USDY41580816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fba63a60327d97127fa7a0754de000a46e8b90bbec3c8f7aa5b0af9c7259dd5. 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/QM7G91511791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22551a07a7f3c46ff180162adabe2201cea738cb637eaf61d030e794a3834b3. 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/USCGJ1595175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342b63c980fcdc8e494a486bd4f9e9bfca98b11a74b8514472dc951178c53014. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QM7G91604705.