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 0x0c6ac0906488a66f09d3c5c2eb7e68c17b74d3480a5a2698b587bd30b598cfe0. 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/c312d63e-764a-4b51-b965-40e57be307b3.json and https://artists.proofprofile.net/proofs/artist/c312d63e-764a-4b51-b965-40e57be307b3.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 0xedd889b3bc3ce3027d60d705e29f6991cdb760f1659825faea6070edb389d97d. 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/ES64E2202981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894d99237d8a45fb4e78c474431347deb56335e27980b4bba5a5e1ce2d52bddc. 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/QZNJX2147058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1407c9eb5c902872fa181d577f93d03d435af26dcd81b9c1a402da1858b5aa63. 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/GX3Q92098345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f77e72da60d5ccc88f8de49a56f9bfee93eeb6f5de09cd03d44f9c1286213d5. 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/SE5752400596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77e19c4baa10caf26bbd96bd8bb42457aa80a98105d122ae10266ec1c94d6a2. 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/US7VG2402505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a595d02d4e6a59de35022fd9db929c5a88460bc85880ec4d958f99732f1daf. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZTPX2354326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e503e7f64484f2d083ae0572e6395b1c704cbb293adc09eb2db12ba37ceac85. 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/QZ5AB2352211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02863f7883de53908c55abfbe4080e2a3905333f3522e18102437edc917de988. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZHZ62256681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb1a529631314b7b62af2deffdd57fdc38934dc2ec8a494304337c5686da015. 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/QZHZ32264959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8660805f0014e6933a88f55c760015bd59f1081a4134ad8b1863c958a178c9e6. 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/QMDA72192671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e7ee474a94235b467da71643d948b89f0cbd4ce9e14e229ed6f243968d1d78. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZNJX2113650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd69d13e93334538dfcfa5d28e3c14e4e9a2583d76db2efa1f1c5e9e96ead82. 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/QZNJX2113716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d0d099b0b64c450c85257ad81471017fe4734a06e76d5176d2963117641ce6. 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/QZNJX2113474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6152a4f3c72fb37af1d021f26eb64eb14e1d6b667b377bf237ee767aeccff35. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBRKQ2057871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572bf99ba6800361c6e9d53fdceab78524ab2bf1fd9b1d0c2a58d236c6442d59. 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/QZFZ42112019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151755fa699e91ec3d5fdc8d7697ce8781fcccb3879f103167e1c40421b031ee. 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/QZNWY2035282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8e8c969590aae2a489ca8000b82c154177377fd895446ae033b49cd5b22592. 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/QZYFZ2380429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1700dd16f23aa0b6be323d04f8b7957c0e007555e6774275c9c3241f7d64a3d1. 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/QZK6N2338679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4b758197ae6b3f1b520dc79883c8c521c07f142d2e4bd768ec88045d4bb8ff. 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/ES64E2201633.