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 0xec2ee6bf4ef5a8f5f6a1af249b8536d5f7ed78973d41699938b85bcb23b9d70b. 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/a8d05bb6-904d-43d9-9e06-ecd14a08216c.json and https://artists.proofprofile.net/proofs/artist/a8d05bb6-904d-43d9-9e06-ecd14a08216c.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 0x7a081b68bbe716969b7f06080d83aced1852ca6a4bb4dfdd4cc7d86c0ca76882. 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/USA2P2148963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd12ae3b1f28ff86c541b67bd5fbcb78fb295afa2472db102a8ed9cfb56f719. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USA2P2148960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f63c0b44c673cc275a1bede8f60e4d51e4d386c3ff376f56d3c11794bbefe1. 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/USA2P2148959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfdddbfa11eda92a95fbeaa47054fd5f573bc299db71dbf91f838a68b1a2c5c3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USA2P2148967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be8cc614017c468026c431d7109b2765e57c62956e1af719e5bbb655cc5679f. 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/USA2P2148966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd568faee39de67f6b846e8e4a87216b59d5fa32973df457967af6b1e0d00cf7a. 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/QZTAT2361411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d6727937e9127d86efb0ec58dbd38b5e2e9322069f85c6c403fa3a65c22447. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTAT2361413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb820c190338db21e537cf4217e999bdeceb1c94d1e8a1bfaf8d385d33a1461b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTAT2361414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab300ac323165b30deaeb049da3cd4ef92059187b31339269e1b32851086b4a2. 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/QZTAT2361415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb20e558c99cfb13c4bc18f4c820ab8eafde9a7203b5989198da821d83bf841bb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTAT2361416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982a23a2cdb2ec3be8f182a62b6536c79e45ad53eae6e29c3f684405b8ac0d87. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTAT2361417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cfe51bb4ce27c5ce709149144f54d98c1ccddd76cc6ccccf46b6c3163059254. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZRP52309125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc521d1260b6fa3e7c3c0d8940c5427d220fd01bd8f275623bf8e00a4d70b4e9e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZRP52309126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649f6ae6de04fdfb260faf17da01f2b2a1f2410ac190af764cb6a0c173192539. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZRP52309127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21b7fee1126488fbb9234691cdea83d5aadd7331272359b7fbf737d97a30117. 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/QZRP52309128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b5925cc65b969aba670d43c48ae6fa0f80c10e28232231391047557eb49b24. 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/QZRP52309129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1e2207d6dfee8ee2ee03cd9499d76587e366a3ef7be5ffe80a07ab045b2be7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZRP52309130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff20b8ee9e7d15649e59a08a360c5e49ba17397f28075e74c61d95eb25cf4a19. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USHM21781571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7b5cd824ee29a5edb35f29718ec2fe91d816bd7758a256a9c48acc2a3330ff. 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/USHM21781572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fdeb2cf2fe638df14603b3555def11ca572f202f09e8458915cdab755372f53. 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/USHM21781573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33fde4107269164da49b58d479e4efb2b94be2151a23f2cf1d69e7aeebcc66f. 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/USHM21781574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b09179da009f36b767a4c0b4ddcddb302ace02a4a05bf456a0f6c7c091b7a8. 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/USHM21781575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04521dab98fe871a96942f9eac0aafd3a868b007217aedcdcf5706698cd26b5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USHM21781576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe895323b3369ffb4e4e1b1931f74ba93116738f11c6cc52a62280176a1a36da. 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/USHM21781577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca629f4bc451a671364526683e8f3a1aa28166a65f2b2f4d7664bd6bbae2394d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USHM21781578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7ae1cdc9f25769b4e2e00ad4ebeea916c97b2f72a55ad96a09cb2f9ab50d97. 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/USHM21781579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ca352f4c9aa6ba2cf17104195e82b3a0823df9e940a87e7afd7d29cd21fb74. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USHM21781580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe66df231ed26cb23a17ccb686591a14ca39c5cb7b381c6d7f01fb67e51ad5c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USHM21781581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9035d2bbe485263be8d333ccca1d5daae4c32f2c115806370bec71facfc1747a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USHM21781582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c0e680c20f706eb0e07bda246a0b0de49f1fdec32814f252d824174a9b608a. 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/USHM21781583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e86ef1556750ecb8868b448d848a2ae51821a820c3d8ee7b31e78d1d72d1dde. 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/USHM21781584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdec4a31d2106ae0ead3b8074862f46f4c948b76a184ee3b2b235f55ab76ce52. 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/USHM21781586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c797d0e477986742f6032f15d883086d8d428f18c8ba82e95c9f78deabde4a. 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/USHM21781591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095596fabbd5ec18a9944f3abd52437b925e97c376a9f1efe6ca45215ebfc780. 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/USHM21781592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168f2fe1fc7da681bc2577f2be44bedf898ffd5d1463d86c7b78d50045745878. 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/USZZ82010025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89666b401c1f2f78c89ef0268d1ae5f1cfcd78c7bc8e06fa0fde1566e3a44bef. 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/USZZ82010026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1630387af48daa76c0694f0352f24bb4d53139daffbc4741558708ed63f01e94. 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/USZZ82010027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37fe296a4fe72bdf3ed22b91f54bb6bd5573e6cf947a053f90f40f184bea892c. 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/USZZ82010028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89666b401c1f2f78c89ef0268d1ae5f1cfcd78c7bc8e06fa0fde1566e3a44bef. 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/USZZ82010026.