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 0xaa528d3ee067b68967e8dad48f287ff206f33d43df07bad7a3def3daf2a0ad3a. 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/034ffcd4-ba9c-4831-93cc-f9afaac8e77e.json and https://artists.proofprofile.net/proofs/artist/034ffcd4-ba9c-4831-93cc-f9afaac8e77e.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 0xabe3e00f33a3c14c1194cbb5df49dde3e681e0c8645a9b4ca502c0b894f366e1. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/NLMT41500860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaabf90bcbdba7ddf505609186bc087733c84bbcaeda2f37d56c9504befd56811. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USQY51600434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192d0fffb2ac73792297f351ed15750858b26a9473cf57cb49d021a2708a7060. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/USA2P1940825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b00c5ef6844c28ac7f26b17f87bff87e58f0e2da9a9e63a81403978019dca78. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:19:13Z), 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/GBKQU2448597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554bc77e5477c3a2714392c7b09040e825eedfb33825e80d6123cae75a9db894. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USA2P2448288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df29ec4b60b295deac32bc5bdc1d9bd18657952caa0ed80c1625eb5f34dd448. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USA2P2458490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc71107081762b020611451a6b21dcd1251cd8df5dc04770c44bc1cb8ede11d6. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:25:45Z), 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/GBKQU2507151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc7382ec91e879f243b3a7af04d607143e47239f5f28c12ff810e41f9db5262. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBKQU2507153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948adc295613c39ca197998ea6d4751ff7dbb7bd81df9253dd430c595bed7e29. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GBKQU2507154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc273c6553a823507490c9c65cb1db47d6b26e0d10dd8a96e65a6cec2158c2a09. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/GBWUL2528266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f71938b982e27541d7cdba63fe37683dc46beb82e6837258f46710e78009c6e. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FRX452508920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35184f4c213d99bfcd8603a3d0d9c9f5f29677d0d39c50b9f46f4e141e58b8a1. 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/NLE802500235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11bdb060cdaf448f83a19a8e208545c442fd48e359189958a47453877ec4275f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ES55E2500060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dceb0e606fa67d98e12fb669160e6bb308f9d8281f2e0dbeb1527b034b0de92. 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/CYA111900058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d2837c5e3ca3df19afc57eaff1a1e7eb47970eb3dcdc1636b2d7a55edfe026. 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/USA2P1912488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb45821dde926d20aef70ce36309c008f5bf2558874ddb48aedbf1b31aa2f2cd. 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/USA2P2422622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee0a3967f4ae5584984afb3dd9dde8dd19455421b8340efbbd7ba08cfbf2945. 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/USA2P2422623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef99ce0fe3b7471c9bba724b74448f8c0a98b229d214eb99530616939fef4e82. 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/QZTH92329650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aba9bea203d20f40b32d8de92b623cc2c6b8a0311a3f2c3277f21a4934b8c65. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZTH92329646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e21c9a7b2b10e51798a8be4eb7f1616f18432bb0a82e90ff97914b2e0b8a8e3. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CA5KR2391327.
Take Me Back (RayRay & Stoltenhoff Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c43a4ef3ec91ea43e93b22d983d8ccf33787a954a4309d5b968f9ec16940ca5. 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/QM4TX2037762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ed8d504cc65d24e18a14fa9493edcf6c8165092083c203aec97bee9ae5a384. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/DKAZA1900255.
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 0x277ca25e8ce0095435d274a6378108133a4043c5194d7b122ef2231723525a80. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USA2P2464319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794c5b62b04b654dcb8f27581f1505e4b820b27270a5cecb9b06bc10140d22c0. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DK9H51800707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87734906f75147cde9952bfe5dca1f8ebed523ba25b03287dd94792f56179459. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/NLE802400422.