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 0xa0d2b517c6008e425a083d93c241de13d9703bd39c2a322bb0d365c984242eb5. 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/3568966c-d5c8-4c67-bfb5-4496d437bebc.json and https://artists.proofprofile.net/proofs/artist/3568966c-d5c8-4c67-bfb5-4496d437bebc.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 0x5b01f71ff7221fecb4fd8acb5dcbecb45f38c6a86f275faee0dce9ed2c081d85. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:05:58Z), 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/QZNJW2043852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866c63152a3b768b8c402cf0f9bc1434cb860bf56f83664b10d4861f45ee25ff. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZNJW2045852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330d8675b465b4274eabb9eec6d94d3e5a60bd85c11eed977ed0505e4c9248dc. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:20:16Z), 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/QZGLS2178219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04af43ec48bef5365490c2528d08f08f9e85b1dd2457655fd60db5f78d9898ba. 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/QZHZ42143108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860ccb835d138419fa10d1c01a4a977c99aedc4a59cf495ee72491f71ecb7b9b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZHZ62113543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ec33f1344c18237a4f76b64f97babee7cb9e5ec8ba38f993482cd98be11869. 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/QZGLM2255358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0055afb2f06514c25e84e588ab242116f5ac7fcecd180fb57878f1a42578ace5. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/BKBU32390014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45010a51d38cdb5e8619456ad7d7d6a8be21094a8c34691d70fd459a39b147da. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZNJZ2395981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0edeac3d70862244f8ce0ebbdc7c943a580672e11eb873ffcf053f0aa2aafa9f. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:04:17Z), 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/BKBU32400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab3a8f575ab1f08e4b1ab22627c63d675d030b892557b1469032afb7452a8aa. 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/BKBU32500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14903cb2edb76fa896cd05a1acebdbdfbc295034eef4d1163c42dd3ee95f6715. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:00:26Z), 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/BKBU32400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b703f1526e7be0fb200ed7f97a5a56ebcfef0cfbe4ab360f838c7cab3d8e1b. 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/BKBU32500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9779cce7f32c780eb45e9bb9e8ca86a172fe2be4a24e89d38b9765a691c6bcb4. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/BKBU32400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c5f8893496ef0e320a653bbb918864fc242562735695a1eefe8bd2ea97363c. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:28:45Z), 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/BKBU32400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d822a3fb17c4ce6c4e9a9a0fc91129544e643e7e8e864279f7b04a5b3b869e3. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:52:54Z), 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/BKBU32500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab3a8f575ab1f08e4b1ab22627c63d675d030b892557b1469032afb7452a8aa. 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/BKBU32500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a3fb84ec5a6c20aae907f9e6fb38ba44870f1fd4c04ea069388d889d58e95c. 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/BKBU32400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0edeac3d70862244f8ce0ebbdc7c943a580672e11eb873ffcf053f0aa2aafa9f. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/BKBU32400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a62d9efe602e46d28917f61a5a531315196c8c0a9b2cf72f965fc902f4e625. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T11:58:31Z), 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/BKBU32500004.