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 0x3fdd4df06aa416a15e48f20e54b48dff58697966292c740a47f0b7c9103b1f61. 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/b299523c-c7ff-40d8-b34e-22026fe31aa9.json and https://artists.proofprofile.net/proofs/artist/b299523c-c7ff-40d8-b34e-22026fe31aa9.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 0xe816852d989c931250ea99a4f8f252653d074c8e034339d514433369eed48e95. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/DEQ121535513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e879f1c87aedc0593c5f1ad91013c31ef52f8c16c84662aeb869fabd999a73. 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/DEQ121639757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cdf81dae9ff9a35e2770ad50d53a4a43ffa0258fbb320af668621157f9ddacf. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:19:14Z), 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/DEQ121639761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7667a82ad36f53ed4f1bc0ac2fe48ec039277925d7c9e1e551564d34a1cd0982. 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/DEQ121643248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8403e13bb55c9399be315b4b6d0498ea12c921ce68cd2df56bf9bec84f41d6fa. 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/DEQ121750682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb317ba02f8fa6cc1af84603cc2c86d2900d9d4bbc62cbaae21d74247e988ea4d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DEQ121751165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b12edabf5b91ad4ce07f2bc38c1aa11d95ed552c784248e109dcf2046a53260. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:38:42Z), 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/DEL711880001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a331daa7343e489e53b0895840494df8bf7364ce540533ccd20b53b3561319. 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/DEQ021903953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd15c8fb23de95e6beac28d334681ef3d9c8a40b6d79cfbe4ecccb8fbe89c18. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/DEQ121855836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0fae73d0029aa734c4f8c1d0861aa1b78a35d44e31e453e29d0e4648e4c285e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEQ021905229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372209518daabc6e2a0936972ed575b5494c49036c13d74868928f6e7c57ec3c. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/DEQ021905682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98a836f52de49f5adbde7d72efbb09fff371a8a37ee8f9cef05946d44f706f3. 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/DEKF22000623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3145aabdb6d9d93704117459825dfd84f5cbbfbd5b4a0b00f9ac59a8ee8bbb. 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/DEKF22000714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f5afb959609726155d08a5e4401fa6cc91e0c0a949fd57b75c5dc1412557e6. 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/DEKF22001156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3684c7bcd89c55cb4c4d8fa6c73e5e95568fac94e1016ee54442a1eccaba84be. 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/DEQ022273280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344029ba36471cea92bca16b8cdd82374aabbe21822b999f6c87981ba999f359. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:51:31Z), 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/DEQ022291390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22be35aeea32d0fec2437030c0e1559af6c79966a8d2d3a68c5ad7d670558716. 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/DEQ022381655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743226c49c2ed2ea1e9632198b29f2aa87497823febe3e36d7fa2fef39e41685. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEQ022381870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d00c74553ccf42dec30460a7ac9b975ade321efb729af5c0c54b6983b6dfe1. 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/DGA092409784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5754b9353899c4705e9dc02aa3bdc5bb95e4b62b0c49e780c80586043c8c7c42. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DGA0M2497669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4bcded3b13cc183d9967a562f46a294bdcc36a8538d5f821938677fd9067c5d. 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/DGA0L2404737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5aac8dbd79d166ab32c7e234fd57a723bf11a136b44c28929b09841dc5c4e0b. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:07:21Z), 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/DGA0L2469537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54d626cfe8acc72f035ab3e4eb345d769a5ee7d88ca4f69432908c1d37279a4. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:57:24Z), 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/TCAIZ2490190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a7cfbfcdfc1bc0f6edeb831a28e0de90d5110280e8fbeeed4252b13d7f2102. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/TCAJB2430539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff0a4a44eaf56c40998b1e369f355cb5e180fadae2d79bac88a3efe8ab8e0ad. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAJF2531347.