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 0xcd2e4bf0c6b66727f9e9690e74f2bfbd6e089364d2c5ecf5ab70c3a6b88747a1. Chain 2 (Bitcoin): anchored in block 953730 (2026-06-15T02:47:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/932fcc43-e745-45e4-b586-5fc18d07327a.json and https://artists.proofprofile.net/proofs/artist/932fcc43-e745-45e4-b586-5fc18d07327a.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 0x17f067d62a433e000d98dbeaec3c7480ba0e5f5a0c31f670652042df6e9c56cf. 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/DEPI82430147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf915849bec8cc24f676629b640632977e036971f44c9062377f94e6fe87672e3. 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/SE6HN2471999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09df206e85d4bae646e71552379b9b73fefe357af9d9ebc5dad65f5f4a67ee82. 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/DEPI82439912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f285d7a36a1cc717570470e417e2826e907bffe2aea343638ca1b206267492. 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/DEPI82414674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96d4ceada216f0de73b7ad6579f9c24e60849c980adbe57fdc4acc7d9ddb2f3. 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/DEPI82319600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c12897031d37c1230682c777f73558abc2bc6ae03d830f8392c9ef6180a5c7. 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/GBSMU7401322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae798357173904847242871dd98d16f92bbb683ef928d61964f7d913193a8102. 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/GBSMU5541706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3395c3ec6c059cf9d0b6bf993ee6b24f6f66c4e564f8168bb9ad3bd28040af01. 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/DEPI82404363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9521c2148db23f059c46330352410f6c8e0031d80cd64c22f4e11a023415cbf0. 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/GTA242300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f66ed84a98db9b86abee4fa99c3e6df12b01cfbe1dfaaa5eb91f208200ac0cd. 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/GTA242300056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3c7df7433f5219ad2b38e5940a8c7c56a815f6ab8fae4a442e4a220f0b3162. 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/GBLFP2177172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ae4bfb77c522e9084bdfb10d4f57e9cde676235d077996339e6501eeac350e. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEPI82562543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342fc92581fba43f73774adfc752790b480946b3ac9382987114177a607d4ad3. 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/DEPI82512499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac13703f1009511efb4842c363507719a9b28b684bbdf2755e85c1fcaac3a8fc. 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/DEPI82502503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0de16f79a1d1c16aeab0289b6164dc9db48e4adaf7281260a414eed825e8a3. 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/DEPI82450154.