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 0x861a76caff793a24f4c83670c7aa23034061f8fd7de6b8dbd8e1ffd5b2c7b871. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/140b2fe3-f4d2-4451-89c0-eef1ab00ebcd.json and https://artists.proofprofile.net/proofs/artist/140b2fe3-f4d2-4451-89c0-eef1ab00ebcd.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 0x456c77db92bf635a3b46aea6965dd73771700d49890dc7cb1b93d918e1fac2bd. 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/BEA031000061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee8ccdd23e6670999fb4381e927f0f9fdb933fb6414078d33d8fe67e7698995. 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/BEA031000065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384e0a5d84c25350a9c7109a8f824df9d558befdcefd790102e836078e462c04. 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/BEA031000069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92d2989540e51ba2400146f017f8c8712e26958e5f113b1f6b9ea304ae247dd. 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/BEA031000073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x200d8b4b30e9f535d7e84d301dad6e671f79632ed73f008d7bffdce2b82c8433. 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/BEA031000077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc034342cfbf17cb43f8148545fac5642fd3cb3f3a0c0fe3b0ab7452dc38cdb57. 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/BEA031000081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf43c16278a44128c14c8733e1606f807d23835eb8de93ea65d848d3cf6efc7f. 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/BEA031000085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7eff2e79dd2acae4601863fb1d1f40939e56bc9ec65830c7be7deb9b486a6e. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/BEA031000089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b00e20002f98b7ccfd991911639d322a828247d99fec228e400a502f300916. 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/BEA031000093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba3b6aadac10f8400ff8f3b0feb8afa4ad31bfafa06ef57bbfb58c8354b4ee5. 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/BEA031000097.
De Wereld Rond (Titelsong van Britt en Ymke En Het Mysterie Van)