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 0x68d949af632b84fcbcb67db9594df00e8d56f9a31564c729c69d5549ef07cc84. 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/02caffcb-3667-42ea-b3bd-5ed8cef861c4.json and https://artists.proofprofile.net/proofs/artist/02caffcb-3667-42ea-b3bd-5ed8cef861c4.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 0xbd8a5f591976e636b68010fd479c429e92a4851a662da3612399f50407c1d107. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:08:58Z), 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/UKKP21200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ceae4c18ee8148aba3f4ef2765691c97fbfbd5539b130584daa0f2d83577ce5. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/UKKP21200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca544cca6840e1a115d06921f91a29369d704724e5fc5dd00873b0b717e31ca. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/UKKP21200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95943b375024dbb7909c078d6e3ed9acc207eb95a02accb4a846dd23479c5d3. 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/UKKP21200020.
I'm Happy to Be (On This Mountain) - Bonus Track / 2012 Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda147579ef2b2b59ac16503ba363d8a00202b77412142cd62cf43e01ceae4429. 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/UKKP21200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c659093542f9eb15573adef658bfed28a45d6ebead5bc881a0ca4aa7c947edc. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/UKKP27200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4360c2fc5a5e41d33dda0208474b17207fe8c619f365f45a8de29bc02883f935. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBAYK1200320.
Love Lost in Bremen (Live, Bremen, 1973)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc132669f95fa92b9a24155ac197aa59138cd17e744ea3eb166044add2f93d5d4. 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/GBMMS2400287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcd822405a2ca0f713ab41e6dd2405babb0eb69a3e35b24fd6af6c9cf07ffd7. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/GBMMS2400290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b96b979f469ebd1140e2b08c716e089c3b3b8b0496123a18b234ee29ddc7fca. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/GBMMS2400298.