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 0x32f71139546544d9405a1ff3af188de3109373adb2335d27ccb8b9aca46a9adb. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3d45ae1a-8355-45bd-acb1-058acbb73cb2.json and https://artists.proofprofile.net/proofs/artist/3d45ae1a-8355-45bd-acb1-058acbb73cb2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Żono Moja i Kochany Mój... oraz więcej piosenek o miłości (2023)
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 0xdfdc1d7d9028ee7808a28daa2fde87327034604715c6eb35e6ca7b0a436d651c. 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/USJSJ1047036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b26d95f1de527a7575180669085ee2dc92a0fcab8caa6c16467c5b7d058a85. 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/DEBL60387667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47b305e9556061f09ab31441c9cf4a19bccce2156ccb3e8fe558104aa0f22d4. 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/DEBL60387669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ccf34a413bd5557c00e4e040cddd3708fd1d2d10e5413ac6b2c47c7606e5383. 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/DEBL60387672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c2b0530ba1ac63279f7b3d07ad590103de4d94dd73266bdeeb3f4951ddc1c5. 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/DEBL60387675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1327280a4056b9de3837597ebda1f316d3cd8ead1e98316731912762adb2eb5. 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/DEBL60387677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc9466ad735ae14eeee353c08a388bb0268a4c90eb0d8abc960cc56a60fa7b7. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USX9P1266016.
Zono Moja i Kochany Mój... oraz wiecej piosenek o milosci
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444b2704a3ceacc857f988861b62077302aeb6830c57f6bf6f241d39b75eb49d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T03:33:32Z), 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/INH101401219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca1b1bb8a1a766f4e780ea38dfe9c60591932b1a3bbf89c568a3144daf14fb8. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:06:57Z), 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/INH101401687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568107c8bb85101a1090ecc9237e05f1d3c1c17da6b86475af628fd915458414. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:01:56Z), 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/INH101401688.
Rowdy Fellow (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0222ad35ceddee517058fc149c5d1fc82a9576455c3f68975b9d1da779d031. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-20T00:03:37Z), 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/INH101401217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d166b3d07c27bd718ebf0e7f3157b0c35479aff547b09f778f79a5599e5b312. 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/INH101401689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3a6376d8781b1df855e9af531d1d0704874fbb120fcc18a8da6ccef970cf15. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/INS181905806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323dbbd9da1cf3226598292de46adb7579f72ee5260d0f326e89fe385ddc32f0. 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/HKI499602302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91682547c6b561fd12a7ddf33f58dfb7d7d21e171a6e4859a04b131dd0bf4898. 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/ATR981168559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe501678e86b9529d3f2ce026bfbf648f5965e27c9b88575618d6b9d4a634e82c. 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/HKI499602303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7fa97c5cf130c00f5f8ef4053b8f956cf98d150a9b7cee9f6aab8a50c30e3d. 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/HKI499602201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323dbbd9da1cf3226598292de46adb7579f72ee5260d0f326e89fe385ddc32f0. 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/HKI499602302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae58b6ecb52809d44d69a94c13af21cbb975d37d979fb9174433478d208fd1e5. 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/NOI761401010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d067633781ee7ecc1b8ea1c496d4ce7b49f0ba4741fc0fb92b07684735738d. 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/NOI761401050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303dcc3df33119f4045046cb05044e57282065da9e5a367a47f184df4422eb67. 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/NOI761401060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7ac0d2f7dbea1576e3e2b1e9e15b430b37746c3eae62569145137701f2ac10. 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/NOI761401130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f33ae2d47891f398df80413ff01273b8dde5f5abdaf3ba4bb84b48bf66a715f. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/HKI499602307.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b6067798ab92a20571a1c7ff02bc465ef24952501cb8e56f68a222d9c98c16c. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/HKI499605202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f900f10381df60e722a42855a8e51d01220ce539f63d240e099f39f8da492e5. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/NOI761401120.