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 0x844528be0f6d6e9a3300d95e1375592ebdfa0db8f4aeb48075420ffbd0d8415b. 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/611539be-0b86-4a51-ba85-8502ba9e9348.json and https://artists.proofprofile.net/proofs/artist/611539be-0b86-4a51-ba85-8502ba9e9348.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 0x9b3093d44f5563e59cfa3a974427e0e6f9d7f0ab36468b517fe523fda4d56c6d. 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/RUA1D2423650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20cb6b460aa8e97ac91dab831dbd7bc1bd629e745e46309d5018d2d84ef27d90. 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/RUA1D2481689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f8c94a62e740d4b03053f0711c5307c0f198f784fde6048e07ec34a7c7571b. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:05:13Z), 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/GB8KE2411701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9182535905bcceb849c9f337f926a9e3a0955a92b694a7e845611e74e61b5db4. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/RUA6Y2503134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f4b950ea7989fb48a3c963796a5a91e2cbd82a2a24a8c4f6b1c4d372a5ec45. 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/RUAGV2500704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4329aea103861a9e2cd6d468c8a8fa0521e934b89a28c67fd89b3f143248fc. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:51:45Z), 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/RUA1D2519465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca3d33dcb8382de6075f260b4e57e10172e0caed292bbcb1009a46512953da9. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:05:43Z), 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/GXBNP2522353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c6c281271a5ab2135068b5f52d4a96b04d9e77f48ae0302d6158ae16ab8c7c. 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/RUAGV2503148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c893a9d22cd046eadff20c7524c678e15638950565768a7f70e1b6795f549e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/RUAGV2503515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde976034a1c98a952117cb4d5ce908792bad6f45025940bfedf06c33694184be. 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/RUA1D2572199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e1ba40d2e195368ce6271ccdcbcace3cbd4fb7d56fbd82844a4e90cf3c7c67. 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/RUAGV2504622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d04f4c11e58fb1b7602bf5c65f43457c69cdce1a0532c1b427175bcc7b68698. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:52:34Z), 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/RUAGT2507499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefdb34983e0ff109a6ccdcdff62d31fbd611c05c1c44e69363b7d33efb661b25. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:09:40Z), 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/RUAGV2508989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337fc95fbda38237fac21c15a2a255d283431d92caade2f1f0d0616524591719. 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/RUAGV2509391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b1db928174ca62e435adda565af9f1dd582399d052d520b7f73e777b9635ff. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:44:20Z), 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/RUAGV2512350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ec4e77bcfc00e1d1548181cd9de0de0f1b979fe4c47196b3d1abf304865348. 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/RUAGV2513192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0bfc87321d0b6d20682f459c87eb50a459a1a69b251f968d9608bf3bb4b4ea. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/RUA6Y2534697.