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 0x10c16a87cf785ce8b0f2c9dd7a634b65f3c39bfc4fc56e0d95ed5d371918b238. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/28a73b9e-168c-4c8e-b7b5-4590dade2f91.json and https://artists.proofprofile.net/proofs/artist/28a73b9e-168c-4c8e-b7b5-4590dade2f91.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 0xb08ea68f940060a41067d5923b68daaa65af0c3bf53492fc739b66ae5d122cca. 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/QZNWZ2240698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcbc49033c74cf76978012b7e8e68ff4709a76bd56c033ac96c90e0b57efe831. 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/QZNWZ2277534.
skeleton dance party (slowed + reverbed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475bf3228b448551ad01037bf484b32597914a850e0e9b55461f81cc4d6927ee. 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/QZES82392436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063485b35eed86b2cfcc6b93a95c7ca249db79395f7d497d49f41bc80c2fa038. 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/QZNWW2377201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb407cf2f5235704378abbb5e5c3b550c619fb97e37b83ec9585f5c87624f95d. 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/QZK6H2364023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6924984e1707530346c223e2cb17cfa39c0c15f7b3eeb7e8256249cb27666aab. 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/QZNWW2377203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620ea03142d560caf71962e409d35188ecf7425080c158190ce72742a19bc6bc. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZHNC2315090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18042b7bfbad9105711c5b1895427cf595915c8f7f6be5a74c41dc19132fb653. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZMER2300932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf165ba8b4d2fee586e3d650dfdc5fe276d7f66585475a53c90be340bdf494b. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZNWW2377204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07470129b562069a399efb1b3ed00f48485e4512a60d295745b67e9a28961062. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZTBF2356850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e45f19c3740d449e6041e824a61372000feb62e8d415fa2eeaf421ccdfbcf5. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/QZHN62408612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76381bf762701c3d6509bcce572e340bfa1dc0b594c9ccac297c55dae9a24427. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZTAS2447811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c0459c07dc37eb0a23885d3a37bc308685dbc5053ca6f695e6d30a6e4bf9aa. 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/QZWFF2434785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f306d5955c29c4dfd49884729d393fbd881b3963efabec847073c8222eceb3. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZWFG2471107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61e8a94e4597b868a2a9c4f2b0702735369374ac2374fa369816d43f69dee11. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZWFG2471110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c1eb197e392e97268b855b70745a0be459c435773f6452c34e541255bb8da4. 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/QZNWZ2424610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b545f2c3b49bd1f3a8734cd1ea5a3b602971fedbc4f41e513f79cf1ad79422e. 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/QZRP42423021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b545f2c3b49bd1f3a8734cd1ea5a3b602971fedbc4f41e513f79cf1ad79422e. 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/QZRP42423021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d24143d5f50aa367dbab4bec4247aacc85b688689be4baaa90d6533925d2234. 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/QZRP42423022.