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 0x79b20a5a8e2585ded3ce4fcc3944ef6c2b8b315192810662a59490ca0004d831. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e88f9bd4-64f1-418b-82e0-92709c0535fa.json and https://artists.proofprofile.net/proofs/artist/e88f9bd4-64f1-418b-82e0-92709c0535fa.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 0x216e7dc636bf0f6c3958af2fb2ddce617a477a1f074e66c03defffa1089d24de. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/GBJDN1100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9573be9a730cae1a5697fe1acbe965b209f00343242d723e66ad72937b16f4. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/GBJDN1100027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4a44d030458aad6e9ec6b985674f7ccb502fda0b472f96213de5adbee1ba18. 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/GBJDN1100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59f858335746e9cdcc7e2f057c5604e594cd592ece7d89c8e8f85c01dc0c0ca. 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/GBJDN1100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25404a65230cd07236885ad3f3a60ef9a151e77c7a24bd28030f34d293c09aed. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/GBJDN1100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec443409390d531cb9d04de2b527e1a20f788601d0c4e6cc22856498b3a4550. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:08:28Z), 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/USA371294878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfccc550d3411c7a9d2640a8edcb23851221b557bf5b0af04adb951879f95875. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USA371294879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc48dc9363b16a4d8b3d83cf6720cb7d6cc29e0a5541b649b8c022b41d9175d. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GBJDN1200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32d8fdb09b5dc37f62e3bdfdf8cd1ff33e6f50631499d9b77e6214f2267988c. 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/GBJDN1200060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba5adb7570855c6ae4073a8e445ed36470b6679fe80a35bcdffd457de7a0207. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBJDN1200061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0194e2eb1313274117592ddba6b01d9a51d4a2b3132843e18832fe01c18fc774. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:09:35Z), 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/USA561300240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e33d5ca7f928a7978d89bf745933a68bf4b75d9d1ae1af6b65535e451acfeaa. 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/USA561300241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db5035d41fd6a35d936eea77cb7886adf6f3993d0564a83c6e6fdafe9e6354e. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/US6R21450096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159d16c0df639467f56f37f5ca60f5ac6aad4163633451da409da82666e68d54. 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/QM6P41431929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440314e1e4bb6df89d45f24b3c13cc69e5f6f6d200b232bcf13a7b78b1d36583. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QM6P41431934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x149c9b8eb8a1885f9ced2443dfa49547af8b7067f63392c2b19cb051a910ad77. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:10:55Z), 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/QM6MZ1710631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5665a5e923004ea3373ac6f17e03a5f298a438eaaa6bb8a3316dac914a1d4886. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:53:21Z), 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/QM6MZ1710632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc279b7237d2f42f60dcd50b60cedefbf07e792b921860c0850a13eb176744fae. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QM6MZ1710634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ec6b010f0b41c77a0f17fb1b5db9b34e77fe715378bda4f595a0170b3371f0. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/QM7281950011.