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 0xba3aa4cdb080a8bbb14f0a1ccc7ba91af90d3f35aad3692f5365393e4da1908d. 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/77cf9fb6-9b02-4b25-94fc-4a468822c3aa.json and https://artists.proofprofile.net/proofs/artist/77cf9fb6-9b02-4b25-94fc-4a468822c3aa.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 0x1aba3004e80e08f5463e01ce581673ff36683e818dc44e6363b12ac256993f2a. 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/TCAFM2124090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8fd9aa76c2a2a1201b35056344f71cfa6099608026e6f61e4a2dcf99e33794. 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/GBSMU5504693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6ad95a06a04b31e7eb5a48551ae6af6ea7c4751e68737f6c5dd49063b79107. 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/QM42K1928913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d20de83701733919e577535a190b4ee1cfc7f7badf2e6396861f88424f7d24. 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/QZNWX2254253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6365438a8886028fde5b4ee5c776d6845c3770afb8cf44ee9df41dd8aa29f726. 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/QZKDK2175647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2b89063bc7826213d4c58b8295e1f6b3f147a7b47beaf53b4357ae5d8c4e3f. 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/GBSMU9334087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2731c9b4d39f6f277c3b2e4fcdf3e137218f4473ee5ab65f8e38af47cb8351ed. 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/TCAFG2091582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01624df5a00095b46b667a47931d79279c4497fedb39bef7b850084d8fa1de12. 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/GBSMU9037238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cace8c868e05d2feabd165d62ae37391709fa13ab8899da103105a401d76c27. 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/QZKDK2060233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bff3f51a9692d3689f8664b7605c76d27d3e307cd2bed7fac81133640ea0b6b. 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/QM42K2019705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684d151a77df3b5c7061e041a41d543449f76cb25a4458dae22a8be6b079cfba. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBSMU7541613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6c9ea36fa6b1498c60a91f38f286fc5278b594ed627a2baf4d4df8fc4c8b89. 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/USLZJ1906056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752ce19afc4bd1d98ce93d9aa1771b7e6ba2fb529ef79a39f946c72c80c52c78. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZ5FN1988525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99813475a01f8e6b13618377a6aff0cb7e99e820c5491a9cd6bd9efb7eea61b6. 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/QZ5FN1937734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf91e5e42a02e8b2c5d8a42d08ae279a1f409fcf9cd0fde093c4418bc539140d. 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/QZF8N1822275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9daf4febbd3bbc24700af3e018dbfe4c5f2209016b6ab85bd07f5fddce9737. 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/GBSMU5232713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8b9e02bdb3d91bd8803498e6df07070b4eda1fb38dfe3fdaf2cd9d8ede27e2. 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/NLP1X1700072.