1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xc3c9b4689ee259f32e210997738cee2cf2edcc8735169857e90dd4f0fcefcb23. 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/7ef51180-7395-4c3f-84ae-73cc5b123d1d.json and https://artists.proofprofile.net/proofs/artist/7ef51180-7395-4c3f-84ae-73cc5b123d1d.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 → block OTSBitcoinBlock must exist at that height 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 0xb4697416579bbeaceb79663fd1022741adc50ee3be5461380aaf0d46ad89c93c. 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/ARA590700229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x933c9425c42f1ebde76382992beb5305f52c36b7ee5a62860186da29eaeca242. 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/ARA590700232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e8af3e558c98454f19688d892ad4fd406c7d6c0d9487877075488b0d3c769b. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/ARA590700234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d8e54a2b5550391183488ed55987f6c9b7a58a01066fa3bc0a2dbb5bea1085. 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/ARA590700235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368a2c9fc9e2e3bc4b960a819a29c2f713a34bcc9a608d6de6f2475892003f82. 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/ARA590700237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee3d06d391550482b343be7da228ea76268f12050edc0c605f82f598248d81f. 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/ARA590700238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab92e373ad1a08bfb138dd96136145ba63883a3e3b80ca439ac22fc03fd95556. 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/ARA590700506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8bd12fba15ad6c5ca15fc35f7a67aceca8e6a33367c3ac027ac0983c7ac6b4. 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/ARA590700507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa41756e09bb3839991a6292ab2495b38c2791d33691eaa006993a7957e54f28. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ARA590700509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1235a3e6f038f0964be1b0031f125ca3cc54106ae916698404303a4c069ff238. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/ARA590700514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463d569af8197c8ba770314270f62a24aa4452bd2f2120fd7823183aaa12a876. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:44:34Z), 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/ARA590700519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a74b63bcc00697e38e52c9f380ba67596e4c8198eb9a71a5719b0d7bc05f831. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ARA590700521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e4ff6da82b22d1abbf25d9407e960bf4ae5f341b40bdeb745740ffd8bde98a. 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/ARA590700523.