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 0x41ceab7dab46f551e02a010e6bf4bcdc15ed8a401d17e712e5582557ecb91483. 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/ebabab65-d253-4db3-8cb1-03d3466d7afd.json and https://artists.proofprofile.net/proofs/artist/ebabab65-d253-4db3-8cb1-03d3466d7afd.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 0xedcfb647b02a4724d750a4206e4f43fbd847d1fcae041da95eb3fcc4c7e63d8a. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/PT0IK1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f2ddb80322e3cafa8f9b33edd9384d4f40fdbe299d17d846a72620163d35d0. 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/PTBM12100221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836a8dbe23a4afb88f6c548e86226731a60cbf5d4fafc68f0175ce183789d914. 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/PTBM12200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d7f253e05823c3b80f48c713f0e178384afa490ea08b8719a5b45be466ac9a. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/PTBM12200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2f92906d777b65fbb7a2c98f5b4a2a3f47d1440fca59207d1ea0629e4a5f4c. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/PTBM12200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e84182628b1509cd98186abd55f782b343cf50f270d1b749e9f4d31dcc3f668. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/PTBM12200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeac96262376c4924522b600d32caf72cd310b7ee975334d54049b5500e3091e. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/PTBM12200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17b6d507c9c9e5d43737b9ccf26b76d50ebe2455d55cdec1db9ecbc9b97b90b. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/PTBM12200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6804484e35715e81650a598867c306f6566708c12f834aa5d8140417599729e3. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T08:36:59Z), 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/PTBM12200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27a4fc6d35bfbdde508076c9b97f58e379a8cff57c838048390b5957abcec69. 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/PTBM12200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd671e1903e91384453f109f432cabd514fbc49232383498fd7b96d0611f9dbe. 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/PTBM12400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f3ca30b57cb9ba1007f8c21cfb19eea7a6de91b6aa8e7527796ffd959119a44. 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/PTBM12400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed5ed4bdc49eaad9ca00c458fc2d589eb390f7978807784ca18aee56842a821. 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/PTBM12400098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe7d4d148f0bd02aa93c9abe5464155f7ff0cf6c826c36e2c67448f414796f0. 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/PTBM12400099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7492b11eacab5e792a4cf8181892af82faa8b6b0dec281a372a9a674fe59ee8. 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/PTBM12400100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1324a02a7adb8e05043314caea9c9a3f87e7ae547dc692b8a58bc0e44857bd9. 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/PTBM12400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c1bc3019ae3977eb93b98702d7030045670e9eeb6388c9864fb43ca77a2b8e. 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/PTBM12400087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7d80ea86ef362859485c7dc6956772dbae4c7fb03f83b72c9d947572fbd302. 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/PTBM12400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d31e78fb42feedca1e5b9c1026fd7d00d2652faadbcb64ab5f59042e03d58e5. 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/PTBM12400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a7663783bc795d0c2fbb1fc700a2b11f260de3431af644b69facb685cd3d0c. 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/PTBM12400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f3ca30b57cb9ba1007f8c21cfb19eea7a6de91b6aa8e7527796ffd959119a44. 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/PTBM12400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd990be32a102a24c8617b4571e517a9d7fbee0001deb095ddd4152b7711ded. 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/PTBM12400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd671e1903e91384453f109f432cabd514fbc49232383498fd7b96d0611f9dbe. 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/PTBM12400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4415fee3da8ed59600d12d821108bbc6c789b4b6314f9fc0f96cc796738939b8. 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/PTBM12400106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599ba749297a5718bff01a1c646f0a186affb359f3e812545ed43388b9e85e95. 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/PTBM12400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb887f7b924bc183b16fd6666dc52cbe0a4d983030e367e80680e3ff5c1b5a52a. 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/PTBM12400107.