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 0x5c02d43437921ad1de9ff3dfe39e3b259e536cca5f093ef2286eca5f237a1265. 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/487651e3-9b32-4737-8759-237fcb36c421.json and https://artists.proofprofile.net/proofs/artist/487651e3-9b32-4737-8759-237fcb36c421.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 0x813b12997abbe475fdb2db81ba2bdc77d4e02e3e194552d7e53c37381935349f. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/SEYOK1612794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d3593855e4c9aaab4451fdaeb3d8486e60510bc781b361b1d3f4171be3d112. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/SEYOK2031754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44890b38fefa9375e2deaa0fcdd2e1f6cc8a4ae03ae2385f84ef3b89edead38f. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/SEYOK2031755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bdccb034100038905c074542527663c226e538011d48952f3493af04a3f9a6d. 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/SEYOK2031757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0090667edd5016de74b8e89e17c20a065b573748ebad091ca05d7a8a3caba66. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/SEYOK2031759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc80aaf44de7dbcfc353dbbd70d1c2e457e816ee73ccf0a2703a04b95ef1ec97. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/SEYOK2117751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a9d7fa74a86efbd07364a7873f0a63ba88b6f5b1b9021147a2539b11faf3b2. 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/SEYOK2117752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a02007b4e7ee82f703cd4615f0a3df95d8751a807018d2a983f797a7cff724. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/SEYOK2117754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67cbb2a5ec455a10c3204ccddfef6191ea5858990a10365566f620a77270979f. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/SEYOK2117755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04130c262d1531ddba69d60be307d5f32278ab075883d295c63370beff6c1e70. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/SEYOK2305885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39cefd5d4fa9ae7b212971fb40e0b3f28d20eb79769755bc9adb8e44a0977ac8. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/SEYOK2305892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea262ab54f3be8a21c1ea9ff3c78d5191e67623bf1c08d79ff7fde641408e247. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/SEYOK2504192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7862a82da6abbffb4201b6d143e78446f54f83061181557d23db5959d7e6620a. 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/SEYOK2504193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe803b64bf93be8b2a312632df596f4b22835897019d0e321de65cdc6230ec4cc. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/SEYOK2504194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x783f2068019a30b230ec68fa86f1f9acc7bd98fbcbbd15649260d719403d29dc. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/SEYOK2504195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7960de8fcf85fa91b84290e746536ff3e84a9003e0a83d03b6b56fc2c7875d28. 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/SEYOK2504196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4234ff09f1ef9ddb317815a4890fdfd658391c2a1c5df7b8a3c5ce5a8026512d. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-20T00:21:32Z), 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/SEYOK2504197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd1dd482f399ed5e19a7fa57e4fe83f7f0584ee7293fffebf63c1df635d3e41. 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/SEYOK2504198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c74c4f84c100c836a7c91711d4f5c71b0a4df5a428c0c43f45176d6967d542. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:34:28Z), 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/SEYOK2504199.