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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3d8ada0230f8b6a252ac4999ef767168b724dd5db9720fd3a2ec1fa9123d85. 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/b93717b7-3a73-4d15-8a24-af4ad2ac0f07.json and https://artists.proofprofile.net/proofs/artist/b93717b7-3a73-4d15-8a24-af4ad2ac0f07.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb630c216e14fa8de377860477451fae365dbc540734f9febd16495bb194840f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SE5Q52200961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1580afd39293524c233c52884505e7a9c5fcad6be3abd5c69ae3d120bf92b128. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SE5Q52203224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba6ca5e73721a6fe8318918a71e0a7d3e19dee625a080d0fbc83d48fe6d0b14. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/SE5Q52203424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9b14354c487bb73a6a504c2bfc2bd61aabb2831919c952da09d1b81c3e9dd6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SE5Q52203074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1580afd39293524c233c52884505e7a9c5fcad6be3abd5c69ae3d120bf92b128. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SE5Q52203224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225764e60215c47e05f2974a9d5bc7812d24c6edec8147e6d2d39267e6e1009d. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/SE5Q52300171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515ee6fb3f12b9e95165692cfbe0398f8dbcd2aa6b1401972c33f27deb54e8d1. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/SE5Q52401277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07cd788e8e58447f12e96a375b692d6f7f7383bdaac7b1df6f3fb187be3f6752. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/SE5Q52402364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe443abf7532a4746b7e13219e51c374b780611cf1a255ee49209b0bae7eebafd. 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/SE5Q52403942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07cd788e8e58447f12e96a375b692d6f7f7383bdaac7b1df6f3fb187be3f6752. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/SE5Q52402364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe443abf7532a4746b7e13219e51c374b780611cf1a255ee49209b0bae7eebafd. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/SE5Q52403942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21beb64724a7c37ff8ee890363f19440989a82230dc66eb31e345349aa84f661. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/SE5Q52402293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb5c4e5e9dabaea6f6ca765124c1d3c29059dde11942fa14b149dfb212ff202. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/SE5Q52402845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa90d4ab8094b61daeeacd7d6e9124428d19831142f3d8c7699ada3fe8266a0e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SE5Q52403787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0b815c1b5d103c224b6d696644e0aa65769f5f2751461cdfa9f7db0c188317. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/SE5Q52501781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9962a0bc1f8cc042f59873676937244a896c8cc2c3d4dca4332ae1f83c00f7a0. 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/SE5Q52304961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2145ec684eb4b83669f52dedae39b783245bada3060ccf992fff1c6e0509c4de. 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/SE5Q52201746.
I Don't Wanna Be Like You (Sped Up Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2941f98de7de84bfaf4bd4247ef4928f235b459f5124acaa25180aa32feed66. 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/SE5Q52300594.