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 0x294fd063e231ce92dbea226a11e6b2ae540df96c934195b36e977c800b27e04c. 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/cf492cbb-bee2-4481-8cec-e8215c625021.json and https://artists.proofprofile.net/proofs/artist/cf492cbb-bee2-4481-8cec-e8215c625021.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 0x95d3fc07b9e559539ecddad9efa0165b9d4cd0326af384b4710758e8c6c05b70. 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/FRY689701220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd681c2250d2d8d3c490bca3cc438009db84e807e47e63777fc1af7cea2de34. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/FRY689701310.
Pousse au milieu des cactus, ma rancoeur
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80808836052af50c8b7186ea1243bc0965ffc618a520b0f936455feac9ba12f5. 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/FRY689701290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350cf478672f5219a791f1e4441ebbc6b83f79de47f7b4958977b9a798175485. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/FRY689701250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47df0c39dad0fa6769ec7e1538ddb5cc963fade21d839986dc4798f71476fe1a. 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/FRY689701210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49920bc6efd820f4080bf892fb0b9de1ea6282adfdea7d8e7b3a8d66b9bc1d0f. 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/FRY689701320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333f5a77ec18a1f6f7229bd606f12312615444f472d5f38b0c752875d4a36443. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRY689701260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe775615ed38af6251bf12327602699641cda63a4e29549cf24c72f2a212abca2. 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/FRY689701340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a85310ea51cc11cfd86c4adaf711a01704578566190a8aee55adf650e58325c. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/FRY689701270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a85310ea51cc11cfd86c4adaf711a01704578566190a8aee55adf650e58325c. 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/FRY689701270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c17c902993aafa0f128fd2565dd477d1e451a76fc9c41a230035be0cfd9ef2. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/FRY689701242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24fd852cc32e8e5b54219a84faaba44234ab8a728f9286c30587f007a7eb9480. 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/FRY689701280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3166568ffd6ec9556f1f1c007101d3591a475c749e107fbc86b7a1f64ef1ad72. 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/FRY680006320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c82b7165091d81a4fb31b38c19c74ab3f07afbc711a91534974cb8d48ad8e1c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FRY680006310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d8bb5585c7f70a219b55a516e9765402994675b04e8582ab4aa5fcdad99a7a. 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/FRY680006420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644f9fc83ee5178915d9cbaf5728807d79ff792a0a1b4cb0a677de30daa29e2c. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:32:27Z), 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/FRY680006390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba8226cccd38852b6508e147db61c39e77de5b3b2a5395ac534796093385b22. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/FRY680006360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644bf1c06282348aabf49b96b96ce8ef14c1fa8eb8f568be981095b5942b164c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZK6J2588893.