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 0x8eee29ba38139d105cde6f5177706b237e2ccdfc23e310b38134a4f1a3b33f77. 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/7029ddd1-ceaa-40e8-83a9-584e7fd7c1a4.json and https://artists.proofprofile.net/proofs/artist/7029ddd1-ceaa-40e8-83a9-584e7fd7c1a4.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 0xbd35ea5694e015852c927aba2d019b3b3af6bc03d8a4c671f7e9b77b15c23f33. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/TCAHG2320012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd35ea5694e015852c927aba2d019b3b3af6bc03d8a4c671f7e9b77b15c23f33. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/TCAHG2320012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55f99ea7960c2843ad5ebfb8d6748c41887b6d3f53c561a1b4236c2f4696101. 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/TCAHE2369701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79200c4bd52860267488873fa31f468e222fef3144500f861ec360239f07e98. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/TCAHO2335454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03dc7f35d2517afa86db806766f5311770d488c3fde3798df19c28ddbc690cce. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:32:47Z), 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/TCAHU2472053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94d980ec44cb0f3fd570a26a9de1dabebf98ed0db033987d60fef9e08be4d29. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:03:32Z), 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/TCAHW2472300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b118f4cffd6cb5336f5048d9bca1da1a85d82dff668e9527cc46bd886da46e9. 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/TCAHW2472375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39dd947d2c48a46c3019da295a8a5a2c2a1cb00b0d0f2ad101351fb64b051e2. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:51:41Z), 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/TCAHZ2480710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb38d91a23543e99ff67a80f1d6070bd73f81e59d792ef9aaa2062512132d1f. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:05:36Z), 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/TCAIC2415149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4988eb344117d86b163055eecd9b057816618eb79fccb1f5348c83c83083ec7c. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/TCAIC2480095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a50a4fdf201ccf3922ad0d21f7fe270775ec00216af5b1584e404d5f112244. 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/TCAIC2480197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1458d7f3b956eb1151fa9147d56f49d6833c1f0e6e4bdcb5bb7f9383e90c869b. 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/TCAIF2469287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85fccda149d6b19807d24b9eee7c986d460a9cb26ececad15c1cf32be6407602. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/TCAIF2469329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755ab023b4ad7c57be65690bc97b4b9944f7d8066b6dd60af74071830ae41c03. 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/TCAIJ2407463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465edcc77cff324e2762e76b0293182f7ce6599f2f61bed59b4a062c54ebde39. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:34:38Z), 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/TCAIJ2471361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dcb044dd8200c1c670853b2a63e1002819f540d95a7096cc02caf22998dbb26. 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/TCAIH2471558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5721e382021501867689c8d86a2a140b965aa90e4ad35a74cfb6be44f756f6. 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/TCAII2471603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5853f744f2f37140ff4ab815d4b788f09f365af6f9480c4b43d6fc9b8d6c032. 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/TCAIL2422855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaadeb795879cb8153d6a342fe03513a0798c3ec896241fc9328a37b277d82fc1. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/TCAIK2422952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726ce8e24b32807bc8489e1f968103f0b58840378b91c295afe9ff44ba277de2. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/TCAIL2423049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5873d997123790693ed5189d25bd8c93dee73b11fe255b86e9475344549006. 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/TCAJA2451187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a46e1b0cf2f1733ffae12bb5c65ad0c10ecb17b888d4f50693fc358aa26ab1. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/TCAJL2594041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x467cb09805df4e20015f729dc0247365c470000a4515b5ed0094e4c00993dee9. 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/TCAJW2511572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b16a10e4ab55d1bab40ef0a594e72cc0bdb377a3b0b675fa535d1bd3b0587c9. 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/QT6622517088.