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 0x025a5c45cc6f07457ac9e1dbc760e0eda0a500da35cd551d98b176b31c6e0014. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6c63bed2-336b-4657-8d1e-2389b568c82d.json and https://artists.proofprofile.net/proofs/artist/6c63bed2-336b-4657-8d1e-2389b568c82d.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 0x14ae8c915a3ac67922c3156dda4c599a99e159ae6b0f0974832ff2f917061849. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZFZ72381415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e452edfa0e316bcbb665e59479691f2cea2e2df1a98a9b96e60a7e47aa2f01. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:55:22Z), 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/QZHN72340515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaacd390c5fe7f1cdc982952e322f3f39d26ba293ec827b337f918354d9ee83a4. 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/QZNWU2366502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0690dcc4b6f03d971189c544460a7a90012e4f23dec3fc5b4d753bf3265315e9. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:11:55Z), 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/QZNWX2304079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ffc7fda55ef400b37b9f842dcf08c7096764af6393c1cf329c0a56824faa9a8. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:37:08Z), 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/QZNWY2386767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d2af4e6a0fe3203a2fa1f6c7f45d7882b4015a5a73bbb2dd3604a9c1b103953. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:48:48Z), 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/QZFYY2400536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de3b93a8a801e50a166267f58ab66689beb9b97abd720eff3def568b41c1bf2. 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/QZK6F2466463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf418d63f0cca1fd122a3386fdf7f3a6e5d488e475eff53f158574633f9e62b1a. 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/QZNWV2423765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff489e574a1ec66236dfd4f6c25096d86a2f625f458464cc1f7f6638ac29ede. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZNWX2457156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60efb0acc720f981c54556b25a7b2418dab21f8c63fc42af7405542f4fe684c. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:57:27Z), 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/QZRP52439227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29f95a7c9b8df2edea5cf81d15620c8ae0561f30a4bb5825b750369066eaf74. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZTB62412722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37df1de67af76efd869f2b29357d1fc3085edce976688a74f8e9133fbb245399. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZTBF2430895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d782d9f148bff0db4b2f1b55d9960407e2e75403ebf3b6a3ddd1637952b724. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:49:00Z), 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/QZWFU2444531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128487519f83f0557ec6aae8a238c110d55f8cd22680b4df00d407457b0774d4. 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/QZFZ32567302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a7e5982d0e9c44071b0ea3ed049d6088210bf977348d96f7d62c872d2ed3806. 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/QZFZ72515216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c369ba7c3281a568e6831fb542a857ed59f558975a5afbc4132ad532a45b986. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/QZK6P2506734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe3f0016e0a38026c36fe9c9defa431c69eca6a823625b73dd3663a44359362. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QZK6P2506737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ff1e92a6094c4a84497ea46ff463744731aca0bd9109d0222ce6e143136c35. 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/QZK6P2506738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee2054283e7584fca26b0dd894dbd713989adac05238408ed98c8a5ef7ee55c. 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/QZNWX2504610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e416d94955c737ef69303fff0c3744e66486a9a0bab3e559064a91bb80a3e5. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZNWX2504613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1caffb0634ae48c2e62800d2950fd530c29568cccc7f268395ceb5f83c10b30. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZTB92504734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2e4abb8f16093870e872a92a69de3b9b3d3a061097f43dc537f877a455ecba. 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/QZTB92507858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf24afdf4218e4fe3b279d6853af192756db1dc5bfe83ab62528ba4aa1211dcf. 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/QZTB92507882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645ebeaab143658221503cd9f0e383295bb72cced93585868e1cf1d0427336f9. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZTBE2509487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6051da0ee8dbe0e5c010a046c01253075a1e0ecb211df83a49982e509d299785. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZWFF2575871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f80b2cca8ed450f3f99f15d73fa0908d4ff0ec9636dda000a39d94fd063ddb4. 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/QZWFL2546031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ecafe4b7a8d59a52da3ba898368fb06b25a679ba409dbe84a79b70ba36ec47c. 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/QZWFT2540016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dce6c0316dd643d8f94145d582e3b990183e28339b00586de9efffc7f791c65. 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/QZZ782523278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1428fcb5532a80f80f2e2ab4365a70df59c2be1846cfe24b93a504b079c5daea. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:13:12Z), 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/QT3F72532180.