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 0xb19600e06c5a0c245046133ee45e27f420fdd333df44888c8aefb7b2b52bdb44. 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/84048f89-02f0-44c5-8abd-4d557895e4cd.json and https://artists.proofprofile.net/proofs/artist/84048f89-02f0-44c5-8abd-4d557895e4cd.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 0x77eebcbc1d3c165b76014bc11e99aaecf05a4ec837a2648a4e3ec44ec4b82f58. 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/DEBY41200564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3baf221dffea26c3006e146059eb82b560f530250eab40f329d4dca066eef5. 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/DEBY41200565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb4ea089a0f8ead6bdf9b1db59067a55cef25074b2935b998800f88502b3060. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEBY41200566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098473b385d143b8a6cbb7332e40b365576e70b1c597134ffd1ac681c6baea0f. 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/DEBY41200567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62dc14eef4dc45f4869761ff4a328a3bdf30547fb0fa2d5eda47f84b62e69d6e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEBY41200569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30bfcecd09e55d5ed808a5eabe3269bf53f15b319c3f493c0c09e388cc92cb63. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/DEBY41200640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89435723d85c46813f769c4867c9ff46de4106f4177fb5cae65cb7cb911254b4. 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/DEBY41200639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5bd25cebb6eb4c4599ba01cbc1a8c8dcbfd96cb36bdd40fa586b79428656f1b. 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/DEBY41200635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb932db6af6450a99583be8e01cdd6fc7acff6f82637f37dc1d39d8b12015db9. 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/DEBY41200696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91407d5ccb09e8bbb1cf674e7e2f24d3cf14c6dc7e8ccfb6d141b315006e64eb. 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/DEBY41200697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee152a4664220388c5cc184b03b7472a55a781df83e75ef7112554197662166. 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/DEBY41200695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47bc6b3c36685a1f2ce0a876c1955aad5d64719f705df6ce4595b264742eb256. 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/DEBY41200698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e88cf48c9b5b0fe40af32ca0d34d2f9d7c8e0a649596388e5e0af70c723d4a. 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/DEBY41200699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7587534e8f99a6bbd152bbb4cd83f3e5bbc72af5edb2204711a64df63b9057d3. 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/DEBY41200702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0865e74f8f308ceb28126130853a2ce6cfb90834b105929c0b1980eb92167fa1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEBY41200704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77eebcbc1d3c165b76014bc11e99aaecf05a4ec837a2648a4e3ec44ec4b82f58. 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/DEBY41200564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88585f93d3e10189388b107d4c84dcdbbfc71f0949dd020ef45f20a978cb8adf. 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/DEBY41200504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1f2bfd35d9def9aa3879ed22819b887ce5cdae627ac83ef4525e2bd64c5986. 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/DEBY41200489.