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 0x04593f210e715c26f4d3c897e248ae33972d1675cb526c0aae9bcc4a46ebcadb. 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/0ecfef83-0b6d-45fd-a02d-b6c5f524724c.json and https://artists.proofprofile.net/proofs/artist/0ecfef83-0b6d-45fd-a02d-b6c5f524724c.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 0x0453b03d9907b7818879b37b4c074fe8c10c38e0299c7062d5adccc010b77c1d. 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/QZHNB2542517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3ee10dc733d48d4a243fbe39bfd910d6e48da916212ada6beafe06719d6d77. 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/QZHNB2542518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09ef417496e90a96488c472e4d5837aa44eab6ccc1dc351ae8d6e5751947075. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZHNB2590001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426695a8743c8e041332c6a30c0af96bd5d79ebc5897dc91072dbe5b313e2376. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZHNC2530810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc557c0dfd76411d739fb720d7717cac29937dbb56941ca0d5eb380c277c1ce5e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZK6P2520250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77302d90c7fb590df01cca0eb358569ac10fa89dc6ba2e0cc9aae3aa5460983e. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/CA5KR2523881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedde7bf64b36626326e724126d873c62e3b9bd8db56a421dff1702accd22a2e4. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZK6H2565339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0ca33d1bcfc70e58419eec3f3531eed0651cf62809d3918cee5ef8b427c294. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZK6H2565340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc3b0aaf9273c5ba2465b908d862b828245038b7fb83aeea74a0caa684541d1. 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/QZMEM2531561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b926374e5c2fe84c298fcd04e8512b474d0151181c36f77bc4fc0bbbce01833. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZMEM2531562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28440dc39701e011772d96b2f8597b7d80543000643169095cb4fef15df8880f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZMEN2555536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a6b9977876999dff5f68c9ec52f3bcef29b1f4ed444218c71f6eb4547574f1. 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/QZMEN2551654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dfb9298615ff40f7e6f7cd436e75be62c5e7694d300aeccf8b4437c6a83598d. 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/QZMEP2578425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd921c16aabc558f9a1c6072b60f9626fdf5a8ad65cd5247cea4796e8801d0afe. 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/QZMEQ2517016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe284ab8157dc19b46bea3c1136b6966da51b7dd4ebba6a12d95860755796c55. 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/QZNWR2533531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbcd924f0949235c967a63747d9dd30681f59b655ab436f565942be4ec4d2df. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZNWS2513740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc557c0dfd76411d739fb720d7717cac29937dbb56941ca0d5eb380c277c1ce5e. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZK6P2520250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x973f3f927d93c936d35e600d58d609f1035ddec5eb5e6ea5c0da9548d56a73d9. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/AUMEV2599358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f234045e1fd19eaa21cd8c07d0a5667299e5177f5dc8bd358e330d1b30e412c. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/AUGBT2518896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5efe816abdaa14d2b7a83094566f70acb568754c9db5079615588d5b1f2e1921. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/AUGBT2518076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75513781788ebcab63ed0b75fc8b4067328e6f674029cb1179db9c7cd0b7a6f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FRX762562731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029b5312f0ffc71cec73b1a009df26e0632193aeb5e8daf93cc4f4793aa84384. 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/FRX762562732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff44dc1f7f6e30dbc0618289e01ba6035768611d94ccc6766634c87734eaa023. 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/FRX762562734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4aab339ea2ffc6cbbf888d017b866b53c9d2967e525de90a49821ee91205c7c. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/FRX762562735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5cc3fafa87db055e0000aef361b786fd3bda24ab6b17a2a0183d8d959988eb5. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/AUGBT2548579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6156d334dd87edaa43c5e6ab83515a838fe3f2d1452e82ddea4fc9ffe55af39. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/AUGBT2548581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820ac53530c7d29280a6f57e48bc53d1bb4e363bc60ffd58ed2cfedf03221f3f. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:16:18Z), 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/AUGBT2553529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd547b3848a826292f0f97b624b45f7c2b9b1bbf6ea540cbb7ff71aa8d66a3e6e. 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/AUGBT2553531.