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 0xd32ad5b0efbee2d36a022212a8c3c780fd8be4914f80b56a7c0bfc05fd71e3cb. 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/23502ab2-5de7-4f24-96fa-d366c8b2839a.json and https://artists.proofprofile.net/proofs/artist/23502ab2-5de7-4f24-96fa-d366c8b2839a.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 0xb3fdfdb82be650688dfe22413009586a44acdbb1f03937e22baf3bcadf2db97c. 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/USBMF9020203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2637b8e6d0d3382417142266e3817e969c37171db2b86fb6c9d79faa89da53cc. 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/USJ3V0944915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6df6eb988a9cf5b1ceb2b2dc8d32ea6235c1b560f2e8201f38a7e8bffa3f65d. 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/USJ3V0944916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ad02ed4f79058ee429f7a86a5bf5fd59114953fcd8c0fd3f793680bda964ea. 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/USJ3V0944918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c80f97bb16751aa42bd4cf928010c2edb48c91034ca29f3e5b66282f81177d. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USJ3V0892627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2849bf20ec43b924234ce0c36cc71a5da3c225689c96b54bf24bfa5808062675. 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/USBMF9421344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedebc9c2bb155aef71c45ca8aa921ad15902ac0c89bdfd8b9f3ad86c69a0617c. 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/USBMF9421281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad8baadac08c0b17bcbd660940e71820e9e7be458bfed84d52ad719338efa82. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USBMF9421285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3c91621b42191098cedcba2f43de95479508d99d4de3eba624128e4a8463f6. 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/USPUP0811105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2cb9ab74e02b6fd50c0292b3f10983538a11df65289cf8d59e9527db7dbe692. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USPUP0811106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0a84f577a92bad6d0e94fe434b9d195c5a2a74f745688007edfc65838086e8. 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/USPUP0811109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3bd00d9f040f7e1b643dd7b395ce9d45ce50ae7e75f1a49ac8cc7c70dce6d3. 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/USPUP0811114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5616a68d02c1ead1f5a9506616268787d60320bb0bb072e00807ccd465279e90. 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/TCABU1462811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47feddba94dde5e171ca124f3f64fbc98c577ce83fa11251e84a54ff06793757. 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/TCABU1462813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b4dc2ed23d20667b52167e591bd8c104763630bece1b7f2f971f03a248b831. 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/USBMF1125862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee3cb3bc37a484689e8a649f478a0cfba9829fcac6b99bd51e64c8c39fa8f1c. 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/USBMF1125863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0956b54d1ffd1a2de8be522b6a9016d8c91d4d4677817895dff2d4c86aee6cde. 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/TCABC1108297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc4cc01499001fcaf28254a9c45da020f41f5b353a53cd267a199bddc73a535. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TCABC1108300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1133d01cae3fc97246377c9712edd8cbade7310e1e5b28cbdfb7b4e6ad847fac. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/TCABU1462755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3e4ea92ead672fc710809a54047cab9978e82daba2893a3e042bfa79d43538. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TCAIX2452881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f29f91ee4b2a8eed83d53db1783e525525547f18d3673ca6750fbe719a7cc5e. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:37:51Z), 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/TCAJA2484151.