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 0x681388535292c7b73753c41f6a0035b44d2cb27a4caf02c5438f7e5e4288b60a. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e84b9e0b-5488-4f63-9fac-e14d51e32498.json and https://artists.proofprofile.net/proofs/artist/e84b9e0b-5488-4f63-9fac-e14d51e32498.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 0x3a495440210bd21f2a2f7e529069a14af2b3ac9a1cd2621d324c8147b9699eae. 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/QZES92019962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ccd49246ca867f1cdcd6afac52f28110180d9457129bf807a6d6bf462c03f6. 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/QZES92019964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc9c6a271112ee1a46bd2ca28c9cee0762b8b1ea141dde9fe55ddb8ccde50d4. 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/QZES92019969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c48a356228d734babfd82df339925d26d402500109dbd590e73d235e9be933. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:50:43Z), 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/QZES92019967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700bfd472d392665b17219e786f2e0fc78b2a4b4d37b33ab3d2d083b15dc0352. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BEO172100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093c7aed4ba7a2c165f94ca83f209c76a504b9bd2ade4895654f2f4ad9331e51. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BEO172100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ac72755ee072f6572be7543c29a7ee5f0f037439fcc5077527d611c244b497. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BEO172100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea2f5495f076b71f46f021778e5f5bbe3ddefa08b3660c19d697187b4ebe5ce. 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/BEO172100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaecd3ae21601a9c40fcae3a73d7e3ce8e0dd213adc74ae7afc93c65fd7b2f841. 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/BEO172100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea2f5495f076b71f46f021778e5f5bbe3ddefa08b3660c19d697187b4ebe5ce. 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/BEO172100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093c7aed4ba7a2c165f94ca83f209c76a504b9bd2ade4895654f2f4ad9331e51. 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/BEO172100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe73ca39195ecdd7a952347a454c57a439785055c83d9679e4cd2a68b8395903. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BEO172400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a00bc1c1b7f1111220e271a610a70da21410026af5e5d607dba568a5875e9e8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BEO172400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51087c0297b8bc3e583e9fdae5403d37b700fb48346302a9d4fffa4ea214ed7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BEO172400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a00bc1c1b7f1111220e271a610a70da21410026af5e5d607dba568a5875e9e8. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BEO172400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51087c0297b8bc3e583e9fdae5403d37b700fb48346302a9d4fffa4ea214ed7. 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/BEO172400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefde29a02d48fddae8568d2952bb9c444942fe11292f7fccd5ba21c63354c7d9. 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/BEO172300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc550db979f7266bc87c0911c0bb3433e9b42c4eec6c4833cf32eec8f753368. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZFYY2397098.