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 0xdf874e70b153bfd0a8c7395fd97a756ff2e83a3d49152fbb0fbb8cf30fcba870. 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/b4602188-dd57-47ae-a9ee-250325976ebe.json and https://artists.proofprofile.net/proofs/artist/b4602188-dd57-47ae-a9ee-250325976ebe.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 0x038f4753a28020192576946205d417f1cd324438e90e270a4cb3c95555c8529d. 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/ES11D2000327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb606c701606798a4ea7510e45fec58a2e6fdef442a0739e9593c724ab4aaa775. 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/ES11D2000328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1126975a10c9bec8220b2578aaaac533ff6df84b1d0dba8920a66b8724b26abe. 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/ES11D2000326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e55e8edfcb97b2e0791c3ace6e0690189b9ccadcd1e704bc3de0d0ca5ae350. 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/ES11D2000329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e54fcee2230e02e8f3952a9953bc1ef66aebc0286a7aea87dfdcfac37aa99ea. 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/ES11D2000335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e3bb22448832dccea0b30ea043bf97c0f87589e71b3369d09ccb109e997973. 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/ES11D2000336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a1856b6d10abf8ebd524ff6edec9952b4a93c29a42973bdcc6adf8b5615587. 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/ES11D2000337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a00260e42ff05b4df0288b7462df167fddc72a9ee036f87ec738550475e4b0. 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/ES11D1700129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d85342b6352131872469fb7c688e06cae8fa9af141ef931809b5a2a8c36f373. 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/ES11D1700131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba8805a148692e4acb41349c665f31396f0540a0c4740853313dc1ac8004076. 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/ES11D1700132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9bf1e8e1745e0b9048ff7c13e88a29138db8065fd43effbc63308458f3a27f. 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/ES11D1700133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b1ea41bf049e76ecf4d2b0cc84b64b6dee3fa407d23351706e559ab503798a. 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/ES11D1700134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb52641b3b1476514f37780e22a65a4ee4790568e5ea3970f5272395443f1eb. 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/ES11D1700138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e4b78deb0d69dc7aaca0ce1eaca0ca98ed90f499f7ba7012116721682d32f3. 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/ES11D2300885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0f83fa3582505908907c71bdf012648bf4fdb6373afe15d4c8eb5bd93e5e61. 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/ES11D2200760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1126975a10c9bec8220b2578aaaac533ff6df84b1d0dba8920a66b8724b26abe. 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/ES11D2000326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe027576d1d1738e30f81681f9bf2685bf4082d94ad5edfda3f35f024195c0dc. 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/ES11D1800202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb949d135cba82242a1af34a022c764d43d23db7b0c41d1ff0aa88642bb1339c. 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/ES11D1800216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3c2f98baa9fd7efc425d99a2ad9f5433628a5fed7446f70c110143591587a0. 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/ES11D1800217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe027576d1d1738e30f81681f9bf2685bf4082d94ad5edfda3f35f024195c0dc. 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/ES11D1800202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2d2250baea9918133e3198901b7dd81b41c082fd3e4d711d76f147085ac503. 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/ES11D1800160.