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 0x976f1c4db1047dc18df679b13943f049370cb4b4e1a4701784512b8b05f99cad. 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/018341aa-d3fa-4eef-ab71-74529012acb8.json and https://artists.proofprofile.net/proofs/artist/018341aa-d3fa-4eef-ab71-74529012acb8.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 0x8bf3fe24c94abd808682efd360f00ea154b3e133a6cff048e1927901b336b13a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ZA56E2101491.
Right Now (feat. Tyler ICU, KLY and SiBi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b500f0d5cc578c542308dfce5e6f604c44942382eff08e8846777c0bc30a1d6. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ZBOIV2300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc669ca596a321d749afd76f7eabda37c7516f3dbc9024c4cc4ad29ad71feafd. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ZBOIV2300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17c2b93be504a69c71e4722109de1a8ac9dd1de0f80d02aa35a825b133a36d9. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ZBOIV2300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b500f0d5cc578c542308dfce5e6f604c44942382eff08e8846777c0bc30a1d6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ZBOIV2300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73308068d823cc8d808baec2b5606145a37ee47751c64ab1437add168eb82aa8. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ZBOIV2400065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52df8da024a407b4e26f0243243199794a344e82bb7316aee43fe2b62a9b2b5. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ZBOIV2400066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa43e68c86f90806395164bab900cd1a36ad2125b2b2376ae717a37d8ff7fca. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ZBOIV2400067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5c20b09ebfbc5396a332ce72f02c4019cb2361a30d0c47010759f81a96bab7. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:02:36Z), 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/USUYG1755878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3eb6abb91d6b9ee54c2771993809a9ddf3d7662b902a7ee1afc31573595a2e5. 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/ZAA012300134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ff4b60eabd72158b2840cb3f350ea55c9cd9a28ad9151eb60c2cd0ee08e8f4. 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/ZBOIV2300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ff4b60eabd72158b2840cb3f350ea55c9cd9a28ad9151eb60c2cd0ee08e8f4. 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/ZBOIV2300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2876587ba18a7fd3cfdc80122cfe93684b9b40683fb64102719fe1e14bece186. 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/ZA56G2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ccc1295473607c79f58f95d1d8a5696347f2a14fee513a55e4f157cc12e6c9. 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/ZA56G2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a6b5ca9ddb246193001d621c8cc49d55df7c0fe74b1f50c7ffbd30bc092d87. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZAUM72200904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b356eec550b268f50bd63bd9018060cd5c1ace2948e6706f776d64ccccf72e7. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZK6L2390737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8673a85c83d5b0fa8d5dade0558fbe2a56f03ed44141df9ae12ee0ba49e7d79. 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/ZBOIV2200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5895c4ed886b8ee4ac3b905784f5ab41f301f86f32cab0bfaa03c90823c5e860. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZHN62297875.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch