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 0x33a78512efa5ecf0210e102397cb867578a18c056929b542a0d2ddb7576c07ca. 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/d3f02c13-73ce-477f-89dd-6c88b42f571c.json and https://artists.proofprofile.net/proofs/artist/d3f02c13-73ce-477f-89dd-6c88b42f571c.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 0x5d6936b0bfaf5c6977ed6748b02f89fedc9e212de5deb0793721201b022cf5b1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMKSC1901270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc11e1a71ac6f29f2b6cd77891c37f39bcc9a9a847055c932e7fce5b66d52c9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZNB82304116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4855d82201d904fe7ba17963699ff1a50c35f4d18d8a5fe92530b0f4621a16. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNB82304119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1949fde90f318936a82b0363530fa3281cb85ebf484cab09d427ce30860d29c0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNB82304120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1eb4c7d0f661f499b3f4b380cb968ea30b2c9218f75603fca812a6ee562574. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZNB82304123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9110d9dc6cc6be048c0309e56717bc4613e90e9d2ac774b1ccf7bdcedd630c40. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNB82304127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6e9c0d576fe2362bfebe7df54acb683bdccb09823fc38931dcfef7c5772260. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USLD91738213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe21b994fe8a25835cb0268a5da0d80aabdd1eb295ad3f50a143379b5e2e9e59. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USLD91737731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6431f32be4a1673ceeb36be03e2c7d2c29918bb1ce1be42420049d65bdf7227d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USLD91738214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11394e8e4720b2a318285e6cd35d4ee5d5c8524276e8dec9286c0a03f2fd3b67. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USLD91736464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2c1f8f1a55d1ac8012833318577432685773d2236106270e1a719cfd1915aa. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USLD91738215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9ebb85cf91de9c6f0cabd53a0a4c4e87f974598fdccb28445a4e5d0707337a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USLD91736737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9018d1f8ac79fd5d24940e3c711c2f6ebf8cbfb0dcea02459eae70add2fc85cc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USLD91738216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98828177fac670a22df9687f963328f2ae74fc233f934d262dced5b28ea4494. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USLD91737002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93e511771e665c6705c5b9678d5da958f5c4f1474ae65828b985cc3c2179239. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USLD91735247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf761fe67914dd02eb319e22d160454a92d38fbe1160e0d9e6cc6a6c1c875bf9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USLD91735246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8546d4fb0122ea7897289275ab91d94648170c8161b875a08d3757272d8e32c9. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/USLD91734587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ee906cbc45c650e104946e6e8b56a3ae2a8e7c9d9a5e6ec9325f7ea5323165. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USLD91733709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb077f873ab0f9839b368db27e6f2af94af833ccf8ce7a34fe4a498a65fc12d13. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USLD91728843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8384014bc31ed372879322135396fe03424745f687ac850fa14d89d17aceb0df. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USLD91727512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5911c2be6e3a37673f769e5eb3686e8237d76ed6d8d553461b461dc5e855693c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USLD91731733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48d0c979a8950bf7314be3e78792ca1ff1a4752dd2ed18ba243f036cf745c4e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USLD91730129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb2259137a76da71ca8dcd3dd11bde3ef6f92612fefceb4162f508d930cad8d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USLD91732453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e65dd6aa0eba73be8ff9fad68ec995e9c48363b5cd3f1d18447f462897a2fa. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USLD91727397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e396b15ab5775d5d65b07c97efe730e830532152fb92a5ad9978e0e1c548d6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USLD91732454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb077f873ab0f9839b368db27e6f2af94af833ccf8ce7a34fe4a498a65fc12d13. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USLD91728843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b83bf3e4b86f05602c1ff6ff7de465dcfd7618675aab2e516d68da04bdbaaf8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USLD91729301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b04b353890c90f17557af1e5a0f42caf065bc4289025d51290e3e87591a7f2c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USLD91732455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37477f325fd14ebe95cc3c2ced06c1c11b50a2bcd27df1c2d7f53e6171add41. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USLD91732456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11b53cbb782a8e565e567122c5cd7ce3f148f0549d282f4f6c44170a0fa1626. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USLD91732457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab5c0c198a13769d80064f6186a138508b52295bf4b127d17a1068554d307de. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USA2P2230381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf761fe67914dd02eb319e22d160454a92d38fbe1160e0d9e6cc6a6c1c875bf9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USLD91735246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e65dd6aa0eba73be8ff9fad68ec995e9c48363b5cd3f1d18447f462897a2fa. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USLD91727397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39016fe93489e59ffbd19de9c2e6fcfa7929191fef5e3f1f19c271178d177334. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USLD91727513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8384014bc31ed372879322135396fe03424745f687ac850fa14d89d17aceb0df. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USLD91727512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d6936b0bfaf5c6977ed6748b02f89fedc9e212de5deb0793721201b022cf5b1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMKSC1901270.