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 0xb6eef7544eef4e65b50b8a3d7cd879af246d42c95d28857a9d15aef77c2ee1f9. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aa048cdc-0b33-4b77-bf7c-cb664641968f.json and https://artists.proofprofile.net/proofs/artist/aa048cdc-0b33-4b77-bf7c-cb664641968f.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 0xf1d2053ba0c935d371b1de01de1bcd51da2de2446ca654aa57a7811106d3fc1c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEPI82113957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66207bd7280bfc9390dc9c731e55e63f652ebb4414c25bb3b092c7402808ba1. 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/DEPI82319430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98fe2f6ac16b46750aeefcbf990d49b3398bbbe913f6b27de65bfe30c930d2ec. 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/DEPI82313594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaad3bb7e504ce0d3d6b1f212186fcfb92af57ed4b92f1484cae7d291fb91f74. 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/DEPI82304577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7561d31862e81b51c40c85781b0636d0fb6e0204b4c016eee428786cc83b96d4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEPI82412063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532c6e0254d96010e1c87e0a0ecc6bec9b1d7b7278eb1e3328ba5dd3fe734ae8. 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/DEPI82322515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2533210def851d612dc4fcb91cf08d24cc6a40e7a9e3d4bf974af9eea1865ce. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEPI82418949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8344bf1d884fb5b9ab754104eaa20012077d1c0d1076ad00496efd4bbb3b1ed9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEPI82416184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfefe7232dbc193199e86661105d275729afc2a6979e064adac61d7d3f15e053. 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/DEPI82414486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692f5a20cc6deb9f8f22ab9c02c2ec98d30a4facdd01200687c4ffde1b559978. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEPI82407102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc09a4e55e60b760692b6b3ac7029fda6c5a0dfe1b4b9460d9392ff329c00a0. 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/DEPI82406802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e8b7d968c94ad3b16f67688d695a75a1af2ee820509674cfaf8192b2d1e207. 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/DEN062400221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d595bdcffe2f4c0586215f389a9e1db185883953397fc71a25d375391b02fbe. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/DEPI82402680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0a04c9a04a1833c649e531ad953c7fbb28461eb1b3a43938cca956aef23e0b. 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/DEPI82400399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed06731dc60f9e48bad4f8c1781161c3d087f7e5c27cc26b7e3778f3b57e2799. 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/DEPI82400401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae435854fdf78cedf90c32f0498cc6b712cd6f54d1bf8e8de682df8bf82c7b3. 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/DEPI82326937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc5713c4dd1ff27bdd10486ca56bbe3c54f52d1756b62f44029fc8914184162. 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/DEPI82320123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8cf5ab557701fb5dcfcfe5a2357cdc18628b81029dfa0104011933a67bc0b2. 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/DEPI82320348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1279a2bbcf8019092a9f87843e407e74903939c13b61e152b3620cfa93bcaac7. 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/DEPI82318710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1df65994612db0b46a239d13d93b9a23fb5d8cd8d1393fbad28aabd4f780cca. 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/DEPI82313677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd884356802743a54148152be3781141e8dc0af67c3086b2c823eb0ae81ce1f. 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/DEPI82311496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3845cfe47db6fc7eaa378e18dc3480c31931219ca575d3d728cb9f6a28314838. 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/DEPI82311610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de34e6a2f7c8ba4522147aaa37385ec2fe2b50fe0caf39a5fef72cd9eccff0f. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/DEPI82311482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74eb843be14639fe06e71f3946bdef2afe69c3423f6b6aa113d90fe3ba75e687. 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/DEPI82310792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cabbc8dbf36cba66eb4263a111fb8716989e53b987bcbf21798cc74878f4f80. 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/DEPI82307158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b4e3fffe2952a40f633e845092471e38dad23923a4341091a8e7542de2557a. 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/DEPI82308241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78dd91fdcee9ace11fe1b3aa306672f13394484d6465911a0faed504167e6861. 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/DEPI82306745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62fd24de57e87a4d287dfd439102e0e130966edf1f5e2e320ac686060d1294cf. 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/DEPI82304579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1ce3c57c60d7692e0198e336647b870bb5158494f9d7d6393cf083c7265421. 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/DEPI82303328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079ebcaeb39999418308a8f27df37b6266720a8c0e453daa1d1a79894dcd99ea. 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/DEPI82302498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64655bd6b8a81958a53fbc51856a4832ae75467779c2cbeeb532b8ce1cc5b75b. 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/DEPI82301678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a1cc6a06ce17449a70c49dd8657908c8b052ac4d105b63c4e793a47a415dc7. 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/DEPI82301289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8195a67f4ba72cb2e84583f57908c2dd49c093b6508e4e631d93a4ba3ac0f2de. 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/DEPI82300219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe671cae4768e59593a17ecec0b6f59e3074ab854d878a42bea39a28e1c497648. 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/DEPI82219314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25eca5be12f973370ca34982b3c693586c2db78e2901ae2b27ae41d2392b308d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEPI82222703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f32da1bfadd11dd2d1f7171b173906cbfe0f75b8f023d7287edaf53e749561. 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/DEPI82220144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da686fc8ad2e08cd4b4267fb805753abe415a4d79c42faed052dff94ca10072. 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/DEPI82221408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7fdf639a497a0a656d8d14da6e5ce0bdba3e81b06764b4daf8a34dc88066d4. 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/DEPI82218377.