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 0x223d441b56221c191a20e401f775f6c8adc5cec28a226252a9df94bc702e6996. 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/00a0d498-9184-43bd-ba0f-5fe6b8860899.json and https://artists.proofprofile.net/proofs/artist/00a0d498-9184-43bd-ba0f-5fe6b8860899.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 0x8f0d30608d001921e9a35e7ea642197df98667b69ad8f22b927f20c4281d8300. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:42:50Z), 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/ART0G1804333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0207750d48ad180f43ffc60207a88606ed04da8e8e9aae8c1b569c9eb4c3350f. 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/ART0G1804334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64afede3377a55bc831048b6dff64d983a30995964bbb94fdc95b1bfcf87a67. 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/ART0G1804336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e188e513872bfa024790be2a0c994a0814bcde03523dbaed78dcac54e84bb93. 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/ART0G1804341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4ba13f523541cdfc1aa325b6c679fe6c9e35a087ad2ad1d7a6e7e96da14402. 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/ART0G1804343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099176d495d3882b51ba2319ab71cab4abff9877f67f4543c849c3a1079a0482. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ART0G1804347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3ba948c6cb46f1b962266f46341d8a5c04d34ab778630290d08cdea26a799e. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/ART0G1804354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b763ead37812d880046fbb509f911ac12b5531d75366278bb0b46d77f61547. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/ART0G1804359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4ba13f523541cdfc1aa325b6c679fe6c9e35a087ad2ad1d7a6e7e96da14402. 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/ART0G1804343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099176d495d3882b51ba2319ab71cab4abff9877f67f4543c849c3a1079a0482. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/ART0G1804347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b578d8d6e0d96f2e87976f9c4a42ffe6700eeede65ba0a2ebe0110842bbc7c4. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/ART0G1804348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3ba948c6cb46f1b962266f46341d8a5c04d34ab778630290d08cdea26a799e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/ART0G1804354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9408eccef53f9c1e555e747b6d17e1758cd880742523ad32540ab38afc418a9. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ART0G1804357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b763ead37812d880046fbb509f911ac12b5531d75366278bb0b46d77f61547. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:41:58Z), 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/ART0G1804359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe024d99f8b4e3cf86be1fe3750109d77fb2657994557961cd3ebae1333134478. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ART0G1804360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501b0c79a9dde922dcc9f00eab810fc744b909adf6f6f3fdf850ff0f1d9a73aa. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ART0G1804369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23e676f5caf64348ed7222e0a405ff65f9c1f2e42dbf90383891d466b0acd9d. 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/ART0G1804371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34529af44aaed9d1205dd7ca12bb69a14f87742665ef778f60e3ba0f2752147c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ART0G1804372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501b0c79a9dde922dcc9f00eab810fc744b909adf6f6f3fdf850ff0f1d9a73aa. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ART0G1804369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23e676f5caf64348ed7222e0a405ff65f9c1f2e42dbf90383891d466b0acd9d. 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/ART0G1804371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34529af44aaed9d1205dd7ca12bb69a14f87742665ef778f60e3ba0f2752147c. 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/ART0G1804372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240704b84e57a93c1fefb9d28daa04a6c893e2800d4faf8a009553d1e3efee3b. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/ART0G1804373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b1c6cbdf47ff6143deee09d318150907dd1c8fe5f0db3f054c1059e607a0bd. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:26:10Z), 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/ART0G1804381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac65fd60c959a90436f873a35a6f4b6ca7e134746f76cf15654064fbaeaf86c. 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/ART0G1804390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0985d8bcb002880ba4f6cb3ffffb17ee960778adea2baa6be8823a739acf6dd1. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ART0G1804377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b1c6cbdf47ff6143deee09d318150907dd1c8fe5f0db3f054c1059e607a0bd. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/ART0G1804381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66b3ff328f1a019b214a329e2500cc6f0dc5b31751c4abed0f4b5fcebfdb669. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:31:53Z), 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/ART0G1804387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a657e9ae968343ac8a561251c1713251cfd622a23f8c28fabbb8cb23e65fec5. 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/ART0G1804393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d06543ef1b399ac36fbcf4baf7ce4867bfdf0d358fa6b4d8ece7364c2f33720. 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/US3DF2005732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c13bc1e17afcf54f74870c1d6cafe2b5e623c13027b2e18f816a14f32762d30. 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/US3DF2009168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6d2231227f6926471221cbc9f2e7645921d7eea2534d0c74859143f2c6d62f. 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/USANG2110024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1332217e414d795205013cbc6655d451d8c9864a0895d187c68e2f510e7c8846. 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/ESUM72302713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a400cff797e6b97d78b7cfe656da400c7dbf0013b5bcc30ee72c03b6df4cf4. 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/QM7281790827.