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 0x037a19da55402026034c29a5ecec4ab79cec17f541da9dbdd45a6ebe042d49cc. 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/da89675b-978d-45ce-996f-c3719176362b.json and https://artists.proofprofile.net/proofs/artist/da89675b-978d-45ce-996f-c3719176362b.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 0x4c4beaf9596e6e123205240e17b7c2013f301817526dc42b7474b3b83e05a5c4. 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/FRDKW2207540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6933908b247961ed9c2f1f015c7d707c22024ef6790a352655b4a42fad7751. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZNWT2261065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226b07067173654e62ea60385be5a0db50b330b519c405b6af170e8292ac6ce0. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZNWV2249564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1f81b7989a26612cf87be7579c6165c7e1f726ea85a03edb65f65a382ed4df. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZNWV2249565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6579c1fbfbf4259aba30494aae5f7d50be481ab424633c4965f2ffcfd32048e2. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZNWV2249566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8be1967a1d0ffacbafe56264b8821dd71b5ff5e625c882f67e3df59798dd92. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FRDKW2205234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb01f46200ff5c3a896783f733bee2b338cd6b34b9d10565681b19a7d02be22. 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/FRDKW2204945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf113b5ce97653f7f548fc4b028708e6f65ed5ebff2ab44df09037a8c4df15ee7. 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/FRDKW2204947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af0cf7658d6da89de2966c1cba0db666e2555a17118d0c5d762c034684ad78f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FRDKW2205481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11039715d518b3166967389cfd6d616eb13ff42cfa66de586e64ae0f30a6d3de. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/FRDKW2206201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62148a4e459c4c0149104de00854db71e51d579ee74b3fecf8217a407340c6fd. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/FRDKW2206489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658352e1ef135ea50cdacd2a2c1805ade29d953949d351f46aa620f23fa8d2db. 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/FRDKW2206268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5003478fc193e2f1ce20e8050f3ff18f883b9bca15cd2926cc8100b4a0019ea5. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/FRDKW2206900.
i was never there X under the influence - sped up
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff86766d544176cbd24f7fbd01851d39a7040778439948052070f380fa376e13. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/FRDKW2208511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d2505fbab6aa6f86120a89fb83057b9c6918ce9171541aa7d5337e0436d692. 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/FRDKW2208607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fed6b71b200a44654193a0693949087709e6d87269378689a84a8f9be0b2e92. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FRDKW2208605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3516ce60a56dcd7f3744689fb90deae527e47b09da7d91d26d41ecf21004c1. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/FRDKW2210182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f474d22b26168992a2290014a50fdc6feb9c9f053c5c3dcd517242e2ed05ad. 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/FRDKW2300804.