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 0xacac8068cdfb321d6b0f123387e1c451a3093ed6d654f47aca950a65ff21eb35. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/46acc630-1167-4133-b1f7-d4a3ca218510.json and https://artists.proofprofile.net/proofs/artist/46acc630-1167-4133-b1f7-d4a3ca218510.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 0x433e6130b1373088a5f321ed665ff30d83d8a4da4efebd08dfc5d5ea8ba97af5. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/GBMA22374004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93468be56ddbee37da4f95165405431c09ee2db39a05e45ed7e85027d9fbbb74. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GBMA22376524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd124daeab43fdead23316a9ee2b5aa9df7bd9b7f010b7183847bf17d42cecfb6. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:35:54Z), 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/GXH2J2561303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2dc4562d1bfaccaad150f615b694e5308169db86519d2c5b2426077d95aca87. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/GX53U2367669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7896bee6187578d9fc9f93774557aa66eaddc17aa3ac4d4f79a675b2108121. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/GX53U2380524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48c77693da038ef25f0b091c49b4bf0adf7b148733a74893a716b313bf8a236. 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/GXF9Q2565035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f9b93b5f38c5bd559496e773b7d2df0336cca0b5a3b317e477d382390fc407. 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/GXF9Q2574701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ef9800c71072ffcad467e88fc771574e92c623e5fee758dbeb2761de90fc71. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GXF9Q2591082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5db61856a83686e38e83ae21a9f870c12622858481bf599d4b276e356784e2. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:22:39Z), 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/GXF9Q2597511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183c9d7e2bb1257187de5276b4dd1940c3809908118b125239f5e84ae75f9f47. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/UKXN22510961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3b8a16419d6f6f7812551661f5e5427a686f68e01b42b56114fb83738c3132. 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/UKXN22514645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x782c95f4255ed0f1773ff8495721a793372b9e04215d4402acd203fe3e7fa26f. 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/UKXN22520712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81870768f77bdad704f8448050ff8d1101d104f7116cfa94f5c7c4486d38678f. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/UKXN22521969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697c7a545f2ec55ed7d2498613fc52cd04f568bb5f8031de6141b8132738388e. 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/UKXN22528015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3c3027eab405d828960a7c36866076a2897612ad7ad16df14e054c3c8b05d8. 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/UKXN22531062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eeeb6241deee0b7e6238b4a30e28cb00bb9f71f27cabc5cefd919bac5b8292a. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/UKXN22544838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242148cfa969dbfcee78956c051d61b9f23e9be24763332e5faf0bbf5ae22092. 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/UKXN22563348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8f8df38a9f78217c2b4096bb94965f830149fcd180567eb823c5bf6181fb8b. 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/UKXN22567755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b460d57a7538cb997aa77bcd7800bdbe79e9433d0599fdc72e040de32030cce. 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/GX3Q92536683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf2bd7ec7edceec6ca121eaee6ca62c4921626ebd191b8b94b210b87e9fb31cc. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/GX3Q92536685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6fd2dcd9e350e5926b3fb141c1c399c9be2ee6d06f65b859c4978ba8290cbd. 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/GX3Q92536688.