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 0x60eaab1330d57f32c870c754d8eb213b738775cf2d62926f836864549e593344. Chain 2 (Bitcoin): anchored in block 953614 (2026-06-14T08:40:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1821ae86-8198-4757-9c3b-e3db8968704c.json and https://artists.proofprofile.net/proofs/artist/1821ae86-8198-4757-9c3b-e3db8968704c.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 0x93292f76104cc98db0853bc19ddee6a6d9771f0e72214c64cacc2bc97296133d. 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/QZTAT2206654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1912d752b6efc34cc8084eb04c0e5488346614df8d56b16d6fc801f35826fd38. 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/QZNWY2419272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9194e1d208cc7fea431307558810a4c8d13287e9a013790ddc471581391d02d. 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/QZES62483171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11edc146ed1200cde4ab14828415b225c05e61feebaad542009368df479385bc. 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/QZTAY2327331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11edc146ed1200cde4ab14828415b225c05e61feebaad542009368df479385bc. 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/QZTAY2327331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e79abda6c6bdcf6f9a1c2c9071563a9786dde0bee2407e747ed3f5ab9aacfa. 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/QZNWX2367620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0cfdda11e8b7d53667c70d542564f19bb5c36873e4378a74c7f8108de1b4bf. 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/QZK6F2395004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31f3f099a4f2dd52e100ba394f37ef9fd3b230dbb9fd938d0abeb7f7963f422. 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/QZHN92379485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfbfff2e4bed67f74bca2c7050cd9a183d9e93d9438dd48f2410f18a0732d8f0. 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/QZES92363675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfbfff2e4bed67f74bca2c7050cd9a183d9e93d9438dd48f2410f18a0732d8f0. 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/QZES92363675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860486087048889a0b8d44d58fa248193da1e1c8341b0443e4df308ed4bf3732. 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/QZFYX2395612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b449a7669e93ebb95c1a9d617dc261eb6430a7d92abc6e16b481b1a9490e1b9. 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/QZK6L2274147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5513a672cd6c733b5114ab01da2d4d69fbd3aec519df49981048ae188e8851. 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/QZTBE2414867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x887b38f46aa0b4bd5c596813376ec0fe5ee1fa3f266a6455571227125b60bae1. 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/QZTBE2437841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea9d72eee3b5488874f47202fdd42e198e745993cb232577074d2ab26643759. 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/QZTB62465451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1912d752b6efc34cc8084eb04c0e5488346614df8d56b16d6fc801f35826fd38. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/QZNWY2419272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9faf52222b367bd735162a8665303a4125e8b87c89b526327556349432d1e3e6. 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/QZZ7N2472800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b247b31f3356197161c9da2eb0c039571d460ea714f41ba9a91a818e6c7741. 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/QZZ7N2472801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea9d72eee3b5488874f47202fdd42e198e745993cb232577074d2ab26643759. 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/QZTB62465451.