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 0x21f625291bdb7dd9479d3b255a588a0d0bfb0fd3e442a7395a4a74587482c7b9. 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/dccae7ae-f2e2-4031-94e8-52fc80abc9b0.json and https://artists.proofprofile.net/proofs/artist/dccae7ae-f2e2-4031-94e8-52fc80abc9b0.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 0xc9088dc1d30a2ab429b05a56d11537af5a9a0a9fb8c7ed6bac72e14aac932ba2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USLD91767874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893abe03356f7fff0e5b57c0e12dbf50cf5d2163456705654132c6f94564f5c4. 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/USLD91767875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3f5995c25a71f05cc522bf03d00fcde41808dcf6fd13bbdd701b0096212cea. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USLD91767876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec19e890ae67fde96fb03ed532de55119f3bf86bb47eae1ab572bb2ed40e2fe9. 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/USLD91767878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849b114bc75bb55edb72cba656dc6a7b830a91e4be1f2783a3e87a6dfd4096bf. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USLD91767881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5c63279b11a6a4efda246f64dcf4e040b2f5eb9c883b2cc4f9e76c31aab3f9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USLD91767882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf591045d5e583e5dc862bc4da94089843a70c4861d3efe3f8ed500d90a461987. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TLVEM2403654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11110cfab833998508c8854258ed95e21eff4dd5044d10d603a9f64790ac33b6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TLVEM2485687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c1d350278fa2901af45c5c7d49ddf5bd18f756e191ff64a2253095d16ff058. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TLVEM2485688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a201e675faa2abf690dbac3e879ed6f0b631b4fac2eda95cddcf8f4fb150cd2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TLVEM2485689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56b79d22e22e8eed24810d577493a1635b80feb2ed9ec19ef801c1966cebed8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TLVEM2485693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88144a04bf346404b691459a29d611e2229e565f72daafd424e217228f5cc439. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TLVEM2485695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4810a503e3f5b1efff005b77e07cb9b84cdea724e49c5b0f817f166edb0b79c5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TLVEM2485701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e3d45e9298c63c2c775bf0a9f80174267a90b14266c059573f1b997a569d42. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TLVEM2485702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe818f7af1bbd9b4d921ad206123b6b78b4faf1f3438b6537a7a374d469e97f5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TLVEM2485703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08469b1259c00465ea404b271c4bd0393d9caf0c1b5b6e52d52a65cab5e40d87. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZAKB2203782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499d225b9696d4d6a8b99ac624b6a8a0d1f8d95bcf532169d557dfddec6b56c2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZKDK2117568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe2899803e36fbb82298c6e9c3bf015ac507b335ae3321165a1afe817fced2f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZAKB2203783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf57dd39d7e34c683ad5a197a098beb02cc2099e81f5edff728cc9d34287a0c. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-21T17:31:56Z), 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/QZAKB2203784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5132f2df6e1d8e93fa97ca210640645e0de34c1509ea698ef734b4cd28747f36. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZAKB2203787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce61b7947973cce788d264426560c2ffaab70f243dc2a4926a8b02021c16e031. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZAKB2153896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48fb3714ce10e90ceaafb0fddcb395e4290580fcd703c3bae9b81f2289188bd9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZAKB2153897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26489b01969093f544617cae75754998d4c4bac31a21d60d4421abeb04dbe46e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZAKB2153898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba29db140987c73c4383146916ce9a2169b9bcb6885b438751fa25bac247e6d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZAKB2153899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9faa83cce523673902a1770fc50ad1d8087062a2fcb6d3c5f8136f4f0fa662. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZAKB2153900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd78782b57758661a337b88d9965dabe3e64c1b60723b129c08cc75157b7d2f8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZAKB2153901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50ff585b9ee288db0da2e6e153f4133f7732e68547de3aa9a51126f108c1c50. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZAKB2153902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f6556bcac8cbe140c88df2d9b559db2ae08ac710524989e50bc620a6885ffb. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-21T17:13:58Z), 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/QZAKB2153903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0e0e46121462ebcfb867ccfd8fa0a3c3704be65e90dc357f94d93ac057f032. 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/QZMHP2009511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae23ceed36d41d4b3cb3f85ae4ecb50a8e4ad8ebde9053c45bf2222b03334b5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USLD91771773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3bd106d61ad1d5ff686f86bcf0566822cc1e65dc7bbe7c7acd6174f7b2f64c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USLD91769564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62b26b479b2518098475e776de083aebacaa44b4ce855e908d2f42ef5cddf9a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USLD91769566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9a046d0d5987012ce9c962904aa63845745ec80e0b7c55ac8cb0e39ab269f0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USLD91769287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf017b0afcfbc2824f5b085d41f4aab056a0693b6f2e2c51ad107e27539bc7d3d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TLVEM2406349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf591045d5e583e5dc862bc4da94089843a70c4861d3efe3f8ed500d90a461987. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TLVEM2403654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab53f0f9fe2e2fa0fa9be62cecb2ab9a2a0e371e82b8b5e707ae8f179f9a26e0. 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/QZPEW2430368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96791d8d8a06f4cec735363b5a8c5f111c1aadb1311555a566e253fda51bac29. 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/QZPEW2405323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0965dad0485c081bb7c825954c33f70a966ad15b3153e0c953ddc275b5d8821. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZAKB2338736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d264ae36556fb1327b3352904e195a6cf590d38ff548fd50c4238bb5afd0d6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZAKB2338739.