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 0xde132364169f8ba52416940cc7ec58c1c45e2b8cdbf36ee1b0f5967c251c716f. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/23b11777-3296-46d7-b8bf-696a627e7635.json and https://artists.proofprofile.net/proofs/artist/23b11777-3296-46d7-b8bf-696a627e7635.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 0xb554c436e9f39b97456d4652862fa4451270eaa312bf3d311786e729c9ebc1ac. 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/CACWV2575981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab57873171eeb2bd78c92222817637eaa0dcd313589bf6f1dc9e425d75784d7. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/CACWV2576052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2deee08aefc48d5c3b8aa6c0e2799a0806a98068991ae6570dbe5d8a01a0f4f1. Chain 2 (Bitcoin): anchored in block 958496 (2026-07-18T04:43:53Z), 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/CACWV2542863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3757d915b5f2205d532449406b339260cf3a5f5cbc4d04009bd5effe6086613a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/CACWV2542878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1074c13505c7ecc21a540bcf7949ae26155dc11d1e3835d1604111bcbffdac8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CACWV2542882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe967a3f51d31d4855055e0ae0f8c56244f94cb5920bf031353bed03e3180d7ac. 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/CACWV2542855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ec11e5946e20f73a9475b7938cb5bba10044d17882031653b1d852302479d1. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/CACWV2542875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8e3c99c02dc01b946108cdef6e5a1e3f31e59b67b99c5ad8e831ac4a829027. 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/CACWV2576021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e886ecd8feaa626cbff048ad07e1f2aa780f01a9ab1abd1326a7612177a3be2. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:49:59Z), 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/CACWV2542884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d1ebdda8b651dcba21e00a2a6747a9495364fa5dd6fa36031b2c1122bc9bf5. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:53:54Z), 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/CACWV2542845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6aea404647f3e9aba5a9b2ab3247d90cc17d7e1bd446adac1b45b5479505af. 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/CACWV2576081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13e0dd406d18c2f314be07f524a99be9c1e851bcf0894b72bc852b95e1a66f0. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:01:38Z), 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/CACWV2542846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa443eb56c0aeb5c498b08aceb9fde6d74a8f669e5171705f153cb8400ed97853. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:01:40Z), 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/CACWV2542877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca53420b870b9d0ecfbdfd97f4cedadedeaa5b4cb587da1c777641ba0e85e46. 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/CACWV2575977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d48e41f5b97b7571c2c0379323abf1b375a5e75d5175726e0096e61a770f08. 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/CACWV2576370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e2be7522548953674150e15e65e903d32eeaa7fd3f34727ab3a4fbc7898afd. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CACWV2576367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c5c298e6fe9621974e8cefa33f3fa5a85ea1756504e468d133af82370db493. 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/CACWV2576366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0262ad560248ffb28db03d8fd76b111292278e2bb66f9c97c8062d841cd55354. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:17:35Z), 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/CACWV2576369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f973cd1753eb55256f3b97cfbaafa113969c38b1c6a1f49ee1170556492c9bb. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/CACWV2576368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194389f6224a31fa2db60613a52bb00122092693007d1143eab19c73e2b45b21. 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/CACWV2543247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb798d09be88c3b04ab896c524bc5a06e319d938e2d9f599634746ca005c423a4. 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/CACWV2543248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28bbf69c03c9ed27ae123c8098492c7398df25b8fd28e4796e9726e00cdb750f. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/CACWV2543246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3ccc91fad9f7cb44a138c1422e64d1653c3672e154fcfc60acf8bd51ce1244. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/CACWV2543249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6bfe19d57944fab0a3ceec10188f5562a690c5d317df437d4746007f111b3d. 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/CACWV2543245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ebbebad07b7aadd1aa43c2deaf558bbb1f5b170c5ee13cbdc59c5604910b65b. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/CACWV2550580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb98df5a646885425d4eea135c5d166bd3cfee251b5a1cea08b4e912dcbc909c. 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/CAENV2531946.