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 0xc5e17359176436e6a3badba74d255423840c1ad106736a10a3eba4ed21824394. 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/798bd2d5-e06d-4f09-9c96-08d3d7f8a88b.json and https://artists.proofprofile.net/proofs/artist/798bd2d5-e06d-4f09-9c96-08d3d7f8a88b.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 0x83fb9f45c9c928f5acc5f24e484d3385136f79dd7e13a697a6fe06d2988dd29a. 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/GBLPF6708059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7339ab44947027edbe878f9b4d21a3bc67921e41aaee21e1c5bfe77a5c78140. 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/GBLPF6708146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007704e40a256a2e6dc6cb4e2e3fbdf73175474fa8aa5e26daa26018acd6db4a. 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/GBLPF6708161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe198c95aa49161fd69b443dce4561d116a44df751a2a88334e989c9c1743bd62. 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/GBLPF6708200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4feb3359de86d8511b0110ebfe47b4857b4c70f3c6f8f5a14b360f5e2d08dd96. 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/GBLPF6708173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaff867a567a1edb1f5f8e99db59417340fbc931ae444fffe826ee37f39d5508. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/GBLPF6708237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d52911b6aa10b832eb814a3c139f65142ab30c741152054eb3d2a3e58db1727. 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/GBLPF6708259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2522b3f8a27bc97a7497b9f478eb3f53c9c75b2b21511adea4bfec979bf639e. 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/GBLPF6708260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ec0374025677e65870862a888b4ea66b6114d4041704c5e75a9b962fecd9d2. 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/GBLPF6708265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55281cdc605e43ca7b49641bb4ab271c6cb3bccf404997d3f23710f91f94e6a. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:58:59Z), 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/GBLPF6708267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd49bd1c5a0ebee6495efce6feffe7f90180b94838c3ee8a2774377f92e5073. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:44:17Z), 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/GBLPF6708329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda9d865b5eabaa5efe8e126e6c5e7607e7eaa13da2d605dd8a273a793b8355e. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/GBLPF6708278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4a69385252f47bcdc46450a319ceaa077f153ed5cf2204652baa74c20d0418. 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/GBLPF6708289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c430d54e1972c010274c2f5a33df71170e0688415b4a9b4c9c9af3729c091a. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/GBLPF6707658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e5f2d90e374a178a1ec018327cc923b13f46cc293360aeb0ae2cb485d90e3f. 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/GBLPF6707669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776baae34b6077ef5ad3e1a33f836468cbbd77b59788df6b09ff4f7de8877043. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/RUA1D2200249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a51a45185b28e77dd6c6b980bebed62dace1ab4161f24e303166f9cf3ac04fe. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/GBLPF2505485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b31cbbb1d2c8af827734a394e5f1f67a90b932dabb0cc9b1954e6a975ebae6. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GBLPF2511345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43925303bb330f5577ab5a2c59044509f4e7bd173e3c00783e5388b6b8c82675. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBLPF2518346.