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 0x00979e22736f980bec53ec080d326cd95e6c5ef42dda3877c182c05e0644c8b6. 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/e61aa90a-08d6-4427-a3e4-a44065bab977.json and https://artists.proofprofile.net/proofs/artist/e61aa90a-08d6-4427-a3e4-a44065bab977.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 0x2505bf5c40c8059a22d02e667e51259636d1db9041212f60cfa4049fbe63a54c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZGLM2227477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a5f896a73d42bde27933d53168499851e99c5dd4630d57a90279814a8caafd. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:35:30Z), 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/QZHZ32210879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d94ddb791015083c52a7aed7b86373cd9b976ef9aa3cb24b6d3e71475f914a. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZHZ32210880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3bd65caba830ad378cdc7108b68035a0133664445682abc848bf0e7c6b0774. Chain 2 (Bitcoin): anchored in block 957566 (2026-07-11T12:26:02Z), 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/QZHZ32210881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89b1b9831a168c1c9f37ba7afbc082e1a53affd4f3002f49d4f150d8cf05c6b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZTAT2231363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ae21c72c13d4506a3ba29801ae76b2ec3445838de79fd2ba04ba6b3c7837b7. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZTAU2292064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac3f4a5aebc5f3630613b76bb847addf66f2bbb01810694931d106f609f0fbe. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZTBB2248208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547254acad714005601268bf36bbdd4ed7da26286c0bfac60f1696737f95bef3. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:26:36Z), 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/QZTBB2234385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685fd2d97214086cfb902f084c9065d3a0e2f2c55c9593dace8351065c8bb305. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZFZ32331370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287abb0efcb04d2fd86744641b0805e12039a4cbca3a2a236300339e09752b5c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZFZ32331372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749b20a10af1f55819b570d9237613dc55b8287b6e4b08ccdd1c70b93dd56262. Chain 2 (Bitcoin): anchored in block 957565 (2026-07-11T12:18:39Z), 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/QZDA62377557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea5f76920e9691fcb24eed9ceab360e972bc0527fe00a4824236dc4a38a9992. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:15:00Z), 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/QZDA62377559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ba0097ad2237fcd0cb5b51f7dd0ba74624658bd667badff9aa2d1e887d262d. Chain 2 (Bitcoin): anchored in block 957564 (2026-07-11T12:19:47Z), 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/QZW9K2345545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4648dcf8b0f3339bcd0b4cfb7afa3c230e5cca6d15f7b35f304809f3da37bc5c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZW9K2345547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a96e0b440d19f4d9f6ad1d820d5eb2f371c2246fe7fa1d579945ce78f6a173. Chain 2 (Bitcoin): anchored in block 957556 (2026-07-11T11:14:07Z), 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/QZW9K2345549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331cd94563e61f10777a648ad9e9a1aec84da33bc4c37b7a4a3082bd44c05300. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:03:49Z), 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/QZ5AB2406084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8406a638b9f26f00da44528c6f38ed772db5eca58a67d279a5f1cfe84e46b904. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZ5AB2406085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d40d4ccc00666819f0943ae809f217b0ee7af2781da4b60dcdc5aa85a5a9d8. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZ5AB2406088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4096d57c85e0851e2b44ed7dd23596833c1520fbcb2a8c814bac7b433405697. 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/QZNJY2433135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b660fb24e458a97aa281cbae1a3a12e919af627793539736b53a83b87f9c8ed. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZGLM2581686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b72f997c2169fddc42ee1d93e4e7514499b11cd5d9c13a1ba68e436d2d5dace. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZNJW2514845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a9ba253aad20dd52d468cad79401928dad778ac1cbd7366a3e18293a9920d3. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZNJW2514847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703df3e0eb4202d1640aeef27fa975e784fa0fd9599eea5692fb342324380b47. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNJX2553948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425361ebba27a99eeef807fafeac54fae4022008432651e451511faa71f40a56. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZNJX2553949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662195941c965117b8a0194222ac00f2d806218efc79dc7d4afa515db26875b3. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZNJY2598803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be84010510380c8ca8a00281a82201bccef29749b3ca36ed51044d5d7ab6e2d. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZNJY2598804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c76618a7ad67611ef9aaa2787e92e40ad8266a4a249e0fcfd0902e5e4d39f73. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZNJY2598806.