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 0x247c6200b0feaad68e4a93d1723253c6409690974319ca093cac9fddaa272bc2. Chain 2 (Bitcoin): anchored in block 953879 (2026-06-16T02:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/08e65f93-89ae-4d07-8cdb-f609eee7e151.json and https://artists.proofprofile.net/proofs/artist/08e65f93-89ae-4d07-8cdb-f609eee7e151.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 0x0598a6217b023355544ebce10f358fbbdff5405a54b6dfdfc1456323a4d67244. 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/QZMEP2093836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1b9a01583ac37554964f823e83d28bf07cfc258926c5c1a962808c8df4f431. 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/QZMEP2093837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e0f181492089254acfa8a6e230318421406219301869b38619619398c0aef0. 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/QZMEP2093839.
Vägra Raggarna Benzin Vol. 3 & 4 (Punk från provinserna 78-82)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410a1074f5135459f79c6e7a6f7e035b212cc06f2ce54dab1969969c6d215839. 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/SELIA1500103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae8ae7d5b2a91070ab1eabd242744253a02729f0c9b929392eb76f9013c2a4e. 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/SELIA1500109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cba208e13d33f047e9d8cf5ebfe17e7430799c009c806cb91b36c8f75503186. 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/SELIA1500116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa884db2047d51132abc790a9128beff5e84dba9ed248ee7470f67394481faf. 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/SELIA1500117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x117ca117edd1d3e78ced88a24b6b3bba604379aa928c159523a8a4ec366e95a8. 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/SELFA9507020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430d229e763c556c798b3de45a5929aa560211e41ec59cf751edc26b8c11f613. 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/SELFA2002003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad33a0440742aa208a695faf0352a7fc9c00ceaaf9109a69112c14acf0212d5. 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/SELFA9507030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f05b758f27fbe1d5671f82765264bef90b60a75dad85a6aaa0cbbd9a3c0c7b. 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/SELFA9507070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206668d81ea95db69faca340091876cd0b814fcac31551df938a63063f6a1f46. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/SELFA9508070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3dba8ed0264fbba8e890a82693fc73b6dbf690d9bb634bb8caad8bf792c80a. 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/SELFA9507100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0396e556d0d66ff13c1cbde30bae47d0d37edef29ff262fd1e6774b04f8d521e. 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/SELFA9507130.