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 0x371f1299e91a21e950d087de2a0cad348ddb316e5e79436207b1e5e00e45a4eb. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7e46e378-ba1e-4680-920d-9306c93589ef.json and https://artists.proofprofile.net/proofs/artist/7e46e378-ba1e-4680-920d-9306c93589ef.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 0x01b63151980f2ae7fa36961e1af9af766604927a328d8819de71eeb63b08f94b. 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/BR5K41800060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28cba42276b4949c525ca49f766c515766b251cb55fa590ec42c6e9be2922d1. 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/BR5K41800061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf963422c2da2f4cb838bd1b0248afd8a2d2ca9afe8d84dbfbf4d09b1515724ac. 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/BR5K41800064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37efcb519da5d5a3170155cbf1973396c92e7dffe53ee99d10f3e0f1ac3729c3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BR5K41800065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98beb0564832898acfac62e0ae1fd27d4514ac3dacd7356d7566b302ec0688e. 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/BR5K41800066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef9893c9fdb13c4075a67102069822e67a02c0a8dfd68842017012be119fb94. 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/BR5K41800068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc6b9aa82b0cd89fd29dc88622ae124ac459732d2fd3208830b307118d3a573. 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/BR5K41800070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d45502b8b5c360d9943efce1d6d0bc5308c42640dd8941cfd5a1a214a5957b1. 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/BR5K41300061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416b8681e332e2179e06c7d4f5428732924fa8c456def32bce68a7bde7d4c818. 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/BR5K41300062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0a5a98c3f9961a8eae82427c94436e8dd23c8695b534b7e32cc7166302587f. 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/BR5K41300063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86895d883192815cead6b50e47bc19d5bc86401eacea7d8b23732a16e80ed6d. 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/BR5K41300068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258306a3dd6b407d2e4fa76688a2d640c352d4d970d7910fa3b0b3869fed4399. Chain 2 (Bitcoin): anchored in block 957212 (2026-07-08T18:33:44Z), 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/BR5K41300070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080550ba16b5a112cc3a7ba564781b3b258fd5070e4451595300504a0dbafeab. 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/BR5K41300071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d41cbaf7b71eaaee61e4121c52d62ef14feafc31b0395b5dee2085b30ba793. 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/BR5K41300072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd634a30446dc30d05830cbf6cbc6f6610ef1a0cd63314d370b68256845415b9d. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BR5K41300074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23cc5d04dbdd500f0f412fdbbfab4de3b212677707591478938644571034eb95. 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/BC61M2400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3682ee8b08c5902c154e22ffff349fe36be40fab31c6b9b19ee8b3ddf816bec7. 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/BC61M2300112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de5e01f9f4946e18228b5658c5f2cdc9df5e2462cd0632b754ea91166dfd8c3. 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/BC61M2300079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b63151980f2ae7fa36961e1af9af766604927a328d8819de71eeb63b08f94b. 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/BR5K41800060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28cba42276b4949c525ca49f766c515766b251cb55fa590ec42c6e9be2922d1. 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/BR5K41800061.