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 0xc0a800ef3c4e45d30e103aa40f68321f60e837402df03f2cb89bbd8af6744478. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9466edab-fd00-4cd5-b0a0-d1a2aeb5416d.json and https://artists.proofprofile.net/proofs/artist/9466edab-fd00-4cd5-b0a0-d1a2aeb5416d.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 0x80b69dce5f2df8e3fd67ab8fb7bb49847851f20035bec8e5ce82e77ef06a4dac. 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/USTCG2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1af0286e0f15da4fa8a0b8cd3a2cb8ac7fc15f95f5aeb21bc92f3536cf31435. 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/USTCG2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b0c98d1c6181c8c7872eb5b6bb23a83cd211b81c1074e7abee3497f6311c1e. 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/ES94G2449003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9750b1fb5b69420ba06f1b2a01e8cf9549805581cc92767eccb18e97178f5ae. 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/ES94G2449004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1af0286e0f15da4fa8a0b8cd3a2cb8ac7fc15f95f5aeb21bc92f3536cf31435. 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/USTCG2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fda186de8061bdb7ba2a91524b8f8413da092b9c95bc3a36cccb40c91a44e8. 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/GBKQU2346400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1008e710e9a694bd9fedc381944c3e40c88197aecf84ccef1dfe2e056f05c0bc. 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/CA5KR2324285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9347e55e617b856930ec5ba7291b14cd4fc7b4c099d2e1672a3ab2de870f2ec. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/GBKQU2187578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b4ca7baf6ac69cc3bc1f12cbec9b7591266af4445ea24aea70b2e54809b4e1. 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/CA5KR2240128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010cd923a5390d94416373f7b817e8694f7de39e992d3d37475d184ee932af62. 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/US83Z2021401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccfb288a4a18a57c8f57635a0bb14014f79ec858fcdae9a0725a3b7193abbbbd. 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/GBKQU1957296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7785143b4479adf2ed436c1ac5eaeafbfa5e942e90d543800fd4dbdf4a4e49. 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/US83Z1900472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56703968690f37b11b85c47545915834f869f8053b97428df62081cc617b082. 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/US83Z2005780.
Blue Faces - Beth Lydi, Andreas Henneberg Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7148cb8d64b8f103bd7a9c033a8fec7c557d81fb3d57d3236b71b2aa255d75. 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/US83Z2119891.