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 0xfa7a98d82c349033bea2c7ca65981b3205afd05470bb3859048f048895538e00. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1149ac4b-0957-4049-9df2-23573fa10287.json and https://artists.proofprofile.net/proofs/artist/1149ac4b-0957-4049-9df2-23573fa10287.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 0x842d99fd73fca61b641aa42c18a82ff89b0dffd9bb0c8f50e2ceeee6cbfc36d7. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/USHM91449555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082f3a5c02fc7733dd4cb8085c94fcf3bfef6d81f139d9e1b84283ac4cb1d6e8. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USHM91449557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cbbffed387a07b40f95089c1572db0ece3e1cbaad006e7eb28d8dd32e9910d3. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/USHM91449558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f107e65951701277047257f66f7ac8c239dae8ea61e1752fd01811720d29b20. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:41:15Z), 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/QM6N21403829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155e624585ae8e6a55ebbe640d50f7871487452ed9f9f3e801e3e2ba7ddc9192. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BGACS2400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4dfecb560a0764e254c25be03757c6ff06206bf8333e62085a750945adb1dfa. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/USCGH1575615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf937045169442b3d767493840c17b2ad404bbf989e294ce08b95e94e0f137242. 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/USHM21486750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9da7b2b1ed364faa53c9214df79ee93001ea391c2dac0f20b77cd3472395afe. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USHM21486751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04712d5c4114ddba36da44dd5818a8f3eeb02b483d91ea441b4601486395326e. 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/USHM21568567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714568bdb1ce562c63381f8ac3622548e2c006ee680b5b19aa7101dfb36a7981. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USHM21568568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6fe4f307fc3400a7a6f37426d4ace5b47bba31d6c8dacd86f1061352800232. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/USHM21568573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626e658ea9de5f1b6278b31dd9fd32e245ee3adc43de1d0d4d6ffc4104828054. 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/USCGJ1897677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30db62dc31e12cc85bb9d3aeef007a02c0bd8f0bda3b7c154deb6abae4656a6a. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USCGJ1897678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b31c4487580eda9d05eaee511d9fee78fb58843109b5ead4716edf2ce75388. 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/USCGJ1897679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdffb6db9235846a89a6765414868b26ed49919644b63d85fc50e791c5b9ac093. 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/USCGJ1897681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46761fb48d774c7936992f4758a745b22e746f155e1d8c304eb782c2e410795a. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:54:23Z), 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/USL4Q2148179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ebcc06c74a8c771ebb4c8c264f107db956e33115439ae8a18a3115ac26e62e. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:39:35Z), 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/USL4Q2148181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747d76b2bd1367a826b06ae792b808ef79cbb8a38c75993dedc3ff2c07d74af6. 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/USL4Q2148183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd4e155ef9767cd576b312b6457d391fd05ce80b991825b141d8ec1580774ed. 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/USL4Q2148186.