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 0x6e6dd19e0d6175759f89ecf2b44c38acbd9e829e7ff16bcde3b6eebfc5b24c88. 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/a2475746-3f3b-472a-8f9e-5e307da96c54.json and https://artists.proofprofile.net/proofs/artist/a2475746-3f3b-472a-8f9e-5e307da96c54.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 0x1bf16f78e5f08d68ec5d0b84ce66a4d1247a906272794b7ed73724a88a6bef0a. 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/QZHN31927623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1761fc3d18894db46b526c8da9a1354e82b5a058f2bcd74996cef6750deb5a. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:50:33Z), 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/GBMA22168804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013155daa07486ef82571231a233b70b4c3828fd891691a30d3003e1fcf85cf1. 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/QZES92158516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9338d26a7b3eb20c533728f52d2135da6484761403502eff2c446d112cf1ee. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/GX3Q92198307.
I Don't Wanna Dance If It's Not with You
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4589f9bbc2d13d1fbc4300a4fd2d67bf4a232482a795ba7832b899109ff250a1. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-17T00:00:14Z), 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/QZ8WX2070490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32eaabcf1bc807e7ef27fac6312faeeece42b7e12af75ac915c321a6ac769e8c. 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/QZ8WX2070636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e79789c443c7827980e259b430aa8beceec139085bc4ffed7ff4923a233e78. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZ8WX2077559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20c029f59db44345f49bbee9e146ce158d70d3bab2e7fa85b59859a193a4bab. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZHN52280224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15cccdcd2d21e761e99bb6eec61a92a58f0c000786060a98b14282263ccbbb2c. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:55:08Z), 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/QZ8WX2096068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ac8394ae253264a5aa98144ada195728ca97b4ea2b8c22fd4e7d8220003c57. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZ8WX2212067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda95284d65eb8b3fd4d31ee0f4c0b61d3f770faaa510ec9f53c9cc6e0d6bdf4. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZ8WX2215913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9685dce78a5f7afa88e9e208866ca54d2644afb7edd8d40e117e1cb9fbab8986. 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/SE6SA2231567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a84468bc974089252a1853437db5bb572d28a0b927fe1d47ccaebbf4406dc3. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZHZD2514902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7eafcc894841880879a2ac6797af919607e419bab4eedcc0defc94e887f6c64. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:56:12Z), 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/QZJRC2533009.