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 0x6af113ee6b502ef8e019ae3be6e25476e5ba48639e4eb17fa3dde3f1ed636225. 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/3049d615-6ac1-4fef-8856-d09760adc856.json and https://artists.proofprofile.net/proofs/artist/3049d615-6ac1-4fef-8856-d09760adc856.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 0x9019a579f84a398cda086c0257207147d7411fb9d53f4c51a1237a3d76900aa4. 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/FRS182139392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82fd53e65bd5597b98e43918017ea05fa9d9c1f46bdbfea9baf0a54e417ed8c. 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/FRX872456394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cde1d9f03ca5f0ff831e48526559b78e1d4aec30a74241a7a1229b57edbc579. 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/FRX872456395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c02536ada197825fca17aba02a39198af9633823368119723e21150cedec22. 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/GBQZQ1000600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6956d5efd21a5dc0a6141d9c6f62367966a7f637dde1f319d2d778c5c4ec31c8. 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/GBCJY1300077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1614a011c7fb955fcc4e2d33d5ebea4118c4ab865e77ada9c7eb08de2a200f. 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/NLCK42221913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a123ce3fdfe87a47311bb94fb33c8c4a31e85e82eb1fce98c7b3a1f9445248. 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/US39N2307765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c2ea474c36c1b820e831cb8bd108e313fea654cd164ca9e3275eb58c77c1c4. 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/GBCJY2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa435ef8800661f8ef5031f512bf4e6afcd2ec2227edf4ea61e2c2d0343946e54. 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/DGA0L2396141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f1a63a49a69687766f62523a2bcbc7c8ee46098ea60d639bad59a5808a1c0c. 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/US38Y2410924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708f3e6561b34f4eef89e0557136e7ed7acff8dabf7891a19bc74642d77c727f. 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/US38Y2407207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708f3e6561b34f4eef89e0557136e7ed7acff8dabf7891a19bc74642d77c727f. 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/US38Y2407207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ed3cea91b2e1a0d114a1804f1e820df27a6b94038b6134e8beb114c8b16dca. 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/GBCJY2200250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0f93c071176f37e52206e271fe3ebf8771faa93c0a26769e679bb54495ec9b. 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/GBBHF0930066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0275498d35843978573c5b807cf98c9b5c7b638b6247bfaa652abd1504cd9add. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/GB5KW1703878.