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 0xc766f98b9f2d1227d1b8ad027ab8347707b762c2cff46ebe06d2e5ded5ac60e5. 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/dbfad528-662c-46bd-a4b7-ec0811c39621.json and https://artists.proofprofile.net/proofs/artist/dbfad528-662c-46bd-a4b7-ec0811c39621.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 0xe1c4356f6df2884aa30023f6bd95038ef9c0b6d167dba612834930635e4b2fca. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:03:26Z), 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/GX53U2349426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7824ef4719618c0ecd84818063717e48fa0f6ed18208bdb1db456f4cb4c90ee6. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/GX53U2349427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b428232451ea88867d6551d3251fea9a2aa6e4fb74de5cbd82d3c191b386fa. 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/GX53U2349428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40b7ba2ed7f158c4f4b1185edfc87edc930dd8c0a5b462662c1a2ebc567d0b2. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:46:09Z), 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/GX53U2349430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef01606c8f92a92b38130f49abd044437958d25e336a19766bfbcd45caa2513. 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/GX53U2349431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddffa498623a79feb9e714c657593722008299e1c1d95944754023e730b3f10. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:24:51Z), 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/GX53U2349432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51413be8a893fbbb70c4f5ea4c6cbab8a97c8f27a3d70f545fe01a31a32e02e2. 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/GX53U2349433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0ebe6ec043ef7fc02d5c38d76739c4b97d95a096a218d208cec979d871d33f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GX53U2349434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc3322661a010127dd5abbbd1267b25721d9301d55d084038e4ccb6a570242f. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/GX53U2349435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48016e8947d12a956b5f872325a2319edcc5af1b93c6e987611b56546c95db5d. 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/GX53U2349436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea67e47b4f5efcab45178a32f6229da87e0808a3370a7c434246266ce3e724f. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GX53U2349437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8827cf76b8f20803d772941fc4f930ba2b9ac3b39232175f8bb89c1bc904c9d6. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GX53U2349438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee9ceda8c868c6e7a606764279a210194447b59ef4b0db1439040b5d3256237. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:52:39Z), 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/GX53U2349439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46d5797458a4b2fe3a7f55b75dfdfd064761fe56b96f117c1a5d377b56593df. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:21:37Z), 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/GX53U2349440.