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 0x0d7664f070e6f4776229a047f709ba12dd035762abc155da9be02ab76d8d96c2. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/162a71cc-be49-4303-b20f-7c4de6b0d697.json and https://artists.proofprofile.net/proofs/artist/162a71cc-be49-4303-b20f-7c4de6b0d697.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 0x8f97ad368d8839de50c13914c3247c5dcc6840112183c28ec63ab739fc5d2908. 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/QZNWQ2159220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a3cccadbe329ed58d7831c72e0c6b13b36230c5d5d322ab7043832b0fb12b9. 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/QZNWQ2159223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ebb98e7d7f45f2ce3c51fd577d8e5dbda1f45366bec3c6bcb699438eb45d47. 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/QZNWS2152163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3b8a7403623920eacacdce7a8dde833ff67bc6a487f29def9262a39d346743. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/QZTAS2199384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d28608a4f8465c0701ee7dd94f5caf9c38da40eb3d300d1c67327fdbfe2b1d. 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/QZFZ22226140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9c2d3baa544492db002f60a3d40cf56456c87b0a6997b6634e60b843b46f57. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZK6J2297176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d16afa66005bf63cc5bd5ea310471863e656683320b7a1539db99056f6a8f22. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:31:56Z), 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/QZRP42217697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bdca5600a2e920b6c621f77e4add7a8946f6b86b0439285bf56a175c1d63699. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:54:23Z), 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/QZTB22261639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f6c0d9d9bb4b080f9a6e77f805c9f97009aa223f963a992e273a3d98d4f9b0. 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/QZTB72220860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf2243b4d5476a1ec40b846a791c14bae623b85ca1968962d22b8db4b5f42ccf. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/QZDA62328712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4af77e9a3f32892ec2a549e6c03dc0f6800f80d161d0c568f6597d440b672f9. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:32:42Z), 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/QZNWX2380777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8796049c699d0d2039cab3e6b177232bb9b1935845dc8ade111ee5a0c90f603. 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/QZPLR2321898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013c5e3fa30fa09c888276689f785439f2371cc088abc364f47e57426a20b007. 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/QZFZ22496049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb9f246f3bc0b457d9357440786a65ebdb29e52f425a380d8f44d77b0fbab10. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QZK6G2470027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b56b02f3bfe1d556947697489702917353a9485f230079a076b5da18900c23. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZTAZ2439822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b0d8fa718bacdb44f1ccb48bd8da294552d1fbd38162e34ad6a878822df58df. 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/GXH2J2544899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25115a8d66e0913f7649296b2077958a0997489e91adba3e06617bcb150d6ccc. 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/QMFME2594426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39afc6285779b342b9acb347e350df01f32f4449f869b39c3718df25d825ecd. 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/INH102413798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e8202b000b984844ca66a3cd9af1b51b158053da6dc25e30ed1113cf1c52e2. 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/INE182326662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad822cfe85a995a147ec293eafe5ce74196ce91884659b0a7b779e85ae47196. 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/INH102414462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ad1fd196a1530f74ef093ff3f79d38943ebaa53c1dc677216a1848f8310f51. 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/INH102414660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb1735ce45ead4d688a607f4d332f58f2143afecd20c68a96c6090b12b55dcd. 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/INH102413567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c90c433a257f4f11a400726b1a3cc86e1dc5a60c2f5e096628fe2185a700f11. 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/INH102413664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ec1e2391fbb1212ffffaa32b50a9a513e03b55c620fb3f52e32a614a0f3964. 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/INH102415108.