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 0x419111fe65c78dbba5f9962cdab944361edbc3d52777530407b649a2ae4871be. 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/7ab08bae-7e5d-44bf-a100-d7a24fc53c7f.json and https://artists.proofprofile.net/proofs/artist/7ab08bae-7e5d-44bf-a100-d7a24fc53c7f.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 0x023397ab6b03b861fc56bb430754a02a037c5fbc9bb6b377f5608b46f2952eb3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US3DF2248482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd246d42cf8f743bceb0eda42485020c88313a3f00a64c741a3586f5c4776be. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USA2P2127956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2a68a40593978fc6c1314d0a178111b5e996d06506cf12bee4974d6ee428b4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US7VG1822420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36ebe63fef653c3fef277b0cbef6a8257184adab902ba3656a7585466d4af8f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USP6L2402623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad12c05d154cab14225648cabb0bad8f98345535ae7bce16c197a2d0617e0c81. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USP6L2402624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72dfcbfa9f2d181070f1756a13ece5a2864ccef71d7666fbcc45d8506e4fe3a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USP6L2402625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7c49944e772279434a95d03855ec2e76f5e3afaccce79fec14012013693eb7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USP6L2402626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04892792aa31fa6841a585524d815e38f91c1d315383c923f843a3e75d367464. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USP6L2402627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c940391a2ac517d4d4a3265a30c35980b3e82b54a0bab06ba1a4e302faee84. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USP6L2402628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c06675fbfcc27b0b65da78ec255b645979e26de76ee8975484b1ed8f7648a58. 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/USP6L2402629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e198992fe7ba997cd2853b1caab7fac5d06eb47b6a33757dbf3dbcb0a6db54e. 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/USP6L2402631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398be6fa3c53baefce5683225d7fe49c057738ce5ddbba2460703538f12470e2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USP6L2402632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2c1dd071a3c502cb35380067ea2568550a46af2b45d4247bca83630dc5979e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USP6L2402633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef99c727ea20d07e8c9c6c3dd27c6aa5923a81dcfde3f025b8052e65d93d33a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USP6L2402635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485a2b6dc796670849d0f9b83d6aa17f13e95a33f1ec662f411c6f4af8eb9c3c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USP6L2402640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb3b682fcaab9790a004f35830aca788f6bd463e1582be40c5fa910117674e7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USP6L2402642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9ae645d451bee7766a7e50dc7bd51d4f09fc3b716ea51aa65b7d003e3191b0. 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/USP6L2402643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd916db1219f92fdcd8e4fbcb44d88aa51a1290e9dc283f6490eee5be795c7f9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USP6L2402645.