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 0x5fb738ea0f5f692935fe7caa3992b1339813c03fcce5aaf1dc403e2dd2b95866. 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/85c6104a-397d-48b5-8552-4e530f6d7935.json and https://artists.proofprofile.net/proofs/artist/85c6104a-397d-48b5-8552-4e530f6d7935.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 0x394fd4e0052462de5d289b632db4884fd1fcdbe2b4c9c76cc2d8a82a697c374b. 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/UK34R1303001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa585b40ab788f0386349a4acf17a4ef16b2cd1b47f1828131e689f3c5adf4987. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/UK34R1706003.
Empty Handed Live (Live at Copper Brown Studios)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa30cab9828b4cc2de0270859f972b061ed2dc1b23a0eaefb355e79106bdfe21. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/UK34R1807111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8f5ade1ceae06f41010a392741c394523860e67ad4139c5f8ee341634c5db3. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/UK34R1123007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb7eadbf504c39010b9053b5f553a65db352a5925b817fb9185b438f32b78e1. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/UK34R1123005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538d8f148f7b625043b62b2ea8dba185576ddfd6d3f2e53aa65816b295acc836. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:23:07Z), 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/DGA0S2459595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef23ea93e14b19e2870768dbe9bbadc35945b9056890871315ec564e173bb11. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FR59R2501216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538d8f148f7b625043b62b2ea8dba185576ddfd6d3f2e53aa65816b295acc836. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DGA0S2459595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb7eadbf504c39010b9053b5f553a65db352a5925b817fb9185b438f32b78e1. 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/UK34R1123005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55afb7164bb8f7722b2b4b7de8a611585c180a9998a49067d9d9cb7a6543dfe. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FR59R2501213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8f5ade1ceae06f41010a392741c394523860e67ad4139c5f8ee341634c5db3. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/UK34R1123007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4119045d8aa18fe30441f7d21166dd3d2fa64a38ed586295e8695bf01e60b562. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:58:00Z), 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/FR59R2501214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3917ce407c1878b432bb1880cb4d1c01ab93bcf5bcf03691777b9f50c9fc01. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR2X42562676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff68b48b59372b274edd8acb04f31801e1391dbf669170ec409aa8bdc3c34d37. 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/QZRUP2100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d7ffa4602ff3c176c0a9ed61f2b8ba44135b295432bdd62bab2002fd4f36f7. 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/QZRUP2100383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5ad5800cb2d00d289260604610785cb762c5ec76756b63986139ed25c80ad2. 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/QZRUP2100384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfb85ccd35af269af8f1de8f88afe9ece0d1d93526359429c48bfcf759cc12b. 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/QZRUP2100258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfb85ccd35af269af8f1de8f88afe9ece0d1d93526359429c48bfcf759cc12b. 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/QZRUP2100258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff68b48b59372b274edd8acb04f31801e1391dbf669170ec409aa8bdc3c34d37. 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/QZRUP2100025.