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 0xef582a98152bcaca3b25d30081b690b88fdfa990788af77e52e3d530047d086e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/70774df8-6175-474d-96bd-b5813c9bc561.json and https://artists.proofprofile.net/proofs/artist/70774df8-6175-474d-96bd-b5813c9bc561.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 0x96f507b8ed4bfdc9b7e54a5831aed97defbfb27bf7d18cb663b0d4decb37e8fe. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/QZDA61918607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc86d43940eab6eeed0de48a7eecc6b98f88be848f94a63818d70e7a0c449701. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZDA61918609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1456b1b34af87076445535489fec303bff19e17a1325f608465ad4d9c94449. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZDA61918610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927c0b2d7f588a13ec0421c7bb2aa64918245f98b3d73d2096c68515b6173e76. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZDA61918613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181d1f73fe295138481de5780492f4ca844d30e5df558ba9d311ccf24efd0568. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZDA61918614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9878d4e2a20c26dd3188cc4853f0cdcca83c6558ca48b7c5ae578300d74765. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZDA61918615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6daff42565d0135b4fed47d2cbc2261bf687cdcbc98370a8fc6407aa4de84c4e. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZAPG1718621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef1120513e665c11b8e643bd5f99923f2b1eef4792e46997ef96fa8c972345c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZAPG1721481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b84a6c727c579d53391c839e4df2f74dafb23eecb59ec32fef0e107621b2d81. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZAPG1721482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5927d7fa2e31c37c01a8ef08bbaac79bc62959522f853067f323a5b5a3c9df3c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZARB1845804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b69816404c94955fbb3e51720f97352b15852d6e3344bcbf7f27209303cafd. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/QZARB1845805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c34349a8e8ef21c5fca97b71f4b908fe6eb80d6870ea1dc2365830e85dc6357. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZARB1845807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76cc5e646352c09a82901d869250b9198f0684155dc9eadd88d38eeccd282c06. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZARB1845808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51cb37887a69a4b1d05a8a312fe7d496ffaf17f8ae3137f0645927a5d3678b4f. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZARB1845431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04f9c32dfc9c27d124dd0be2b6092a3cd543c525e1f0e60ff57a62d77f0cfb7. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:26:28Z), 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/QMPKX1866261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf56352b1add6469696a5801fb016832632914ecb8c99220aede86619f185a57. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:30:51Z), 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/QMPKX1866262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x470d6be9886aa2272f4ca4e541db80f60c942ca710170b9b01e886e5b374f28a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QMPKX1866263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ba6dfb819125adf32f0700db478ea659b431416e93d2eae872fc965fe935af. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QMPKX1866264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19243e611b3e89145d7861d63f9eadd7e577c234ac85d9498228408dfe8048cd. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QMPKX1866266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11089dd4df4703e396878492be7ac5b92ddd4d902c0dcd4feab75dbf1ba4acf. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:42:16Z), 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/QZFYX2036008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e31e96803d5338a91fdde9edf20cb9c87121278c192b9236398f6bf248fae33. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DGA052211613.