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 0xe939bd17b6e029a8179323ca9c6b388675b6124dfd1c891e735b96580d06e05c. Chain 2 (Bitcoin): anchored in block 953759 (2026-06-15T08:04:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b6b1c6ae-967e-4188-a066-ebf3e95abb0e.json and https://artists.proofprofile.net/proofs/artist/b6b1c6ae-967e-4188-a066-ebf3e95abb0e.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 0xab0edf658dee61627eb7bd9f0f59011f591b956c3967844c62d9486d20854693. 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/AUDJ02302617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93ff33e2502a7606f0803ee7d8ced0d5812b277a1ba938f4a35179374412a84. 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/AUDJ02302622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f80b9cd6f518e289b62877c0c51295a6a8c6a713198691e407e6e0a396c4a2b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/AUDJ02302623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2215b743b86fd0b376b7bad27330f0c172517adc9b7cf07db665742c57edd4. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/AUDJ02302627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe475da3432a06c3a95362dc1cdbb4daf2e462c53ff73a42d8456889a61835a1f. 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/AUDJ02002171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba41a762d62907b18d78d3cd9e95e3599f66e47fa12823d8874e95680dc1b58f. 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/AUDJ02002240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e692c4bbb3fba578eff869863adb2503ed12b83a735c02a602553beae3c8e2. 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/AUDJ02002245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0290abfb7c626742046dfbcb30319bfb914ca392e08f4c8125a7779676c98bc6. 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/AUDJ01701619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c279747df6f0abeaa4c875873899e59341062ee588b0d2184c1d1ddae59f8c. 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/AUDJ01701620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae49c315ab2c2bb93b3641d74db87f0700100d9cd2ded5fc2181f8076bc3f26. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/AUDJ01701592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac7453621a02e1037648d3d01fb0bf9f32ada4a0c3a1231b75ffd71b6b9febc. 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/AUDJ01701623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4ea7095be5d265ad86537797ad365173f8974c094e43ef40c3e02eb453215a. 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/AUDJ01701624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953068060c67ce9391622adb5753dd7f3d782c859734d9ab6efd272a5e0d4eb9. 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/AUDJ01701627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372057677a2c9b70586b9893b882553cf6458aff8f9fc04ae1a6e13937dc0088. 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/AUDJ01701628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe122d2a7b43a427f8514c4e7e4b319d71e7c07419f003ea3d107a6b43fc7ee97. 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/GBSMU2661400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42aeb7d880dc098940c0a4735859e4a9df8a27f60c9eaea54d9411c4b9bdc3d3. 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/GBSMU2661402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f80b9cd6f518e289b62877c0c51295a6a8c6a713198691e407e6e0a396c4a2b. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/AUDJ02302623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2215b743b86fd0b376b7bad27330f0c172517adc9b7cf07db665742c57edd4. 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/AUDJ02302627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93ff33e2502a7606f0803ee7d8ced0d5812b277a1ba938f4a35179374412a84. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/AUDJ02302622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe318cf23e642b5cd455555ecc19458815b54cbe9a3945e30b29ee7d3d5047cb5. 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/AUDJ01801917.