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 0x0736402fbf88edd11276697da05682f77a22fb849dfefc2273d65d590d027325. 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/027d9d93-0b24-4c49-9104-b72e72d032b3.json and https://artists.proofprofile.net/proofs/artist/027d9d93-0b24-4c49-9104-b72e72d032b3.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 0x8c420be28e8a8275063c612d5d2c6fcf6e8a79ce53a2bfa4a24bd99b07fbd960. 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/QZK6Q2002244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660570c884d967bbab490c18ec2a53b0790c2250ee65b5064054ddde0bae2950. 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/AUXN22159951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0e281d465bb5977b234fd4540427c79f5d828084db80bf08c8742e15c0b602. 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/AUXN22159952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5bb5b022b48fa772a8f919d9015e83c39b9f1270805538d5443ffdd4873e1cf. 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/AUXN22159953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6778c69180f010349ba90997a76f453176e6dfc87a547f66017016bc89557d. 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/AUXN22159954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db8bbd127a110e34f5f802430d4e27dd0c1f10fcabf35c45845cb4fb3077e43. 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/AUXN22159955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26f050fc098f8080956ba9c2a626d9e6d9df70ef7b08025a2cc7714de50e654. 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/AUXN22159956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d38d8c367a5fbc0c99c61c46d039791aa99daf5cca4da116115e551999f02d6. 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/AUXN22159957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364532ca6e03fedf80703f105ac97a760fcfeef948ba20d95e257d51b296bba9. 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/AUXN22159958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb790c8896eb65616d672e80c9d64628106c04fbce746bbe7ec681b1a99b051. 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/AUXN22159959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ed4298d8f58ad4d35305ee7705f305b58201091483b759dd66b1a4c641f4f1. 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/AUXN22159960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1ade1b2e968b7806bed15091ea2a501d6e22ab34c8bfaf9b9a12c7fb5ea8cb. 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/AUXN22159961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8debdb6ad7967868e2c49048b8a8a50ede171770992965fad4e1d7f02eecdea. 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/AUXN22159962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf094748beb6fe0174655654f5337c31725af5167248a1829cd104d5de482f8b. 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/AUXN22159963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39c8574d6c87bda1d3143e2482f7058597ce38dac1b6a2de4cd05d4970fb684. 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/AUXN22159964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5316cee018adb83e290b02158db05b5ae0a90194059653688140aec20424e46c. 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/AUXN22159965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a31b6a16a6d1f4becced8ae09c339d7da1cf6bc93c1347c76a9dad23e616d38. 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/AUXN22159966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9cee226c553e2bd8f30046abc591c271b597abbb675ea7eee6807a7c9598ab0. 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/AUXN22159967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f20b9d178f6b4d0d913422933471749eb9ffe9d3e7a0b443d8b1538c9cabb29. 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/AUXN22159968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8831be1c2da2575526041be2103c8716cdde8264d43bee307405c8c6cae02628. 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/AUXN22159969.