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 0xc642125109decfc2d3028504fa47cbc71adaae4128d7fd4a67f52ebfd4d670e3. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/209dc12f-5800-47e9-b269-db2dda753fd5.json and https://artists.proofprofile.net/proofs/artist/209dc12f-5800-47e9-b269-db2dda753fd5.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 0x5d149835cfa6be6f4b258062d5fc3ced0118d84143c7868220653a70b6c746b9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:12:32Z), 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/QZDA82201387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab00cbff5868414e0cf7d1f8ceb7ba7b1eebed000c8f2bd1b1becce3eae0fd8d. 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/QZDA82201388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd27033b5c2bbf07d6c08a01bae2e84a2e2595879b0732654aa07324d28eee7. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZDA82201391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc84eed053e4d1434050c1681a40bbcbc0e15caa5669172297b45c307e6649c5. 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/QZDA82201392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5570b0c3f7f2e2e9cec7f34d5c3560568ede548bfc839c0483ca8ae04440f2e1. 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/QZDA62297451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1cd2b0d8d58af2d6a768bbd14da26ba247ccbf6b506103e9515c3c4098479e1. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZDA82201389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6284501354edefdfa9edf37b36b4a173a72285c81a00e2796e3380aa76eef4. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZDA82201390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f93d9f3b43e4a8e2b51135a3723a5ceb405fa7101481fd932864c29f6f02b1. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QZDA82201393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b928bd3e5f0e97013cf290eccfa16ecbebe96926952819e8d7ede968e54235b. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QZDA82201394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57c9160b549cec5a95db4b48c1d7671e39b3b52aa0b78e2be658106d6dd653a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZFZ42255543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56097cb40425bd374427fddcbfaeadf4eef631d99b8891e7a81e01f2ef8c697. 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/TR0781200144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41232a482435165f6b40921a954315e45f6ba589b8c5aa16a06cf20e9e30e6d1. 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/TR0781200145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2d131ee46ce72d63bf75e8d81600b2597c2edbfb9a23aa9e940ff30ce4221c. 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/TR0781200146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a94754ff0099eb883d0d169d32f53ccfe94c8f36a823941b71419d69fdb0fa. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TR0781200149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0e23f3334915def0f3768fd18f772a0c26878a3a6ca55a87bd5982365cb1ba. 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/TR0781200150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee36fae65b9091a099ca3ee4a2f4b45060c2a37e83f0baa3d854f7ee1ab604e. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/TR0781200141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac05b2ad852cba965481e9803f0bf54153da1dc157ae76e721c917f16cd35ca. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/TR0781200142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5d459ec520ebdc4f7515063f64f68a0a8fe0a2585ac6fad792ee2205d8926c. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/TR0781200143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80c3fe7636644a9f58be17f13c08d59f90637e3b60335c87b779bd18e2d44d9. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/TR0781200147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf388cbcae3f5fb5d871bfdeae347f1d16d70f59a410e513bd4d2ec6cbe9af05. 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/QMDA72205364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b1b953f23613bc7c1e864e32d0fba20a1347e074e769996a604da3af044958. 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/QMDA72205473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e18ad3a56ed1044ccf59370388b2e32aa6353a489639610fc499c666b633a89. 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/QMDA72205478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f575306c1a278ae7c0f6aaccab78cb9bb61bf70605f109a3a62fadd076e566c. 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/QMDA72205548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd74d360e2e2e373365941787edc27dbf17f48ca26d73fc136c81106c73fe99. Chain 2 (Bitcoin): anchored in block 957198 (2026-07-08T15:54:54Z), 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/QMDA72205652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8deb66742481fa649b880f28c49cf7f1e25d3d86c50f9bbfb1cf6543bdc5b7. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QMDA72205507.