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 0xee1acfd28037edbf8c53618595812d687ae626d0f65c413cc947a4f65b95e1b6. 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/84b6a586-4ba5-4cdc-910d-e6323b64ff62.json and https://artists.proofprofile.net/proofs/artist/84b6a586-4ba5-4cdc-910d-e6323b64ff62.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 0x979838942a86c2061893717fb483af67e0fef5fab2f4e591cd7a6023748c9a93. 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/CH7812371803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0418245438dca5f94fe01cee39cbb8bf56942d465764db1abbb7e7d8d85673d. 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/US3DF2491269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5475e99bfe7616b656c70f021f00ada2571bbe1506d08a19d198e08f90ecbdfe. 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/USANG2432008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c762968791aa274e67b198eaaabfcceaa40889ab66cdacb654166dd6b1be627. 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/USANG2433589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31eced7c73fc226d71e7551892a7abd4d35dbc28db8f368078cbd1e521b3a8f2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DGA0P2453596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebaa42b379c0a4a84853f5eef9c84e44fbb351c49966bcbc2f49e3460a869f14. 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/US3DF2459981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74d4a3a2fd11a10870d428f8566d4700fc4ae4f8799a4d2a84a08365718da55. 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/USANG2451082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda984802b2c7689d323f79f0aba6ee688003c4672165e1d110d1dcb8e3f8b05c. 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/USANG2451083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087984d686c3f5fe0c749e271da974fd274d4e63491ee47ba321e364d5643336. 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/USANG2441452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12fd9e394792d089e18539fbd9880e37806d8f7178ac9cec4fe659fe96b30b54. 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/USANG2445258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb9b260ed53b19adeda5e561fec67322e10e26bb120fb2fc0529ba068a389d5. 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/USANG2415032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196db5aed011fb2e3315966dfb1cbe954bceeaf3d1440fdaf21057ce926cb232. 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/USANG2405965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7bd801cff5d7b51ea4c63c26893836fa9f6461b1784a17a21bbd6cb73a0147. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FREO02401200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e8feaa90d2b5f7b7878f75573c2a7449d4aeb5e876bf227a9d3d2cf04fd2dc. 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/US3DF2476546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468de30374f16d7a3cba3e24c54d8fa9581262987f81a31d9e5db00b485ce9be. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRX762489608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcabd8272135ee996a9668a8f8baca6276d055ddc31c37a0c2affb3a7f3452979. 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/US3DF2492742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e9a2a15f316fb8ab4a5b9fe99fa5fa6eadc632f65c7bb409730ea644964857. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRX762489607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd86a4e513260d88eec97725a7d314cac54645f66615839665ebdd2854e9c24. 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/US3DF2465318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e31b15a776c974a7a2b2a16a3f3f5ee5e7b77e5f72e5c91f7919f1e120ea71. 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/US3DF2435589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50dcbf01cb4efc459d819855c369a6b4db98134068fdf79dc053cea3cd55a937. 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/FR9Z62400058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d3c6c9187c504044f2650859411fe27ba13badb9cb921f821605664d2a79f9. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US3DF2422403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d94542ff03b2b09f42c30fc901a7c078cdcbb3b8691a17f096049a216f9f07. 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/US3DF2417367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9310928356f6d772ef7637e81920a51eff9a73266ecbe9a3b2db0e37c3b1c12b. 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/US3DF2402140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9faeb75773dd1f2cd18fad03f2f793b6abc283bf579629573ddedfdfbacf645e. 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/NL4YD2400155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58b44e2763b52661edfdfea5a4aa54fbde48e7ddf8c3123e147d20dd07b9981. 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/DGA0Q2398337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0833f0205ed529e76d22bc26e45e2242940521a93d9da1c79370d0c6da0f72ed. 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/GBPS85193434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2916df832ba6e268b0e84da14893449162ab38645411367a3cd3508a9ef1761c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMANG2245123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefdf3641e1ebab1d3ea3452947e25ce296bc8dcac4ab1a7e0a66e2468d9b71bf. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QMANG2227775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649fc3655ff9a6ae86d2cdf1457a0f39fd321ef60a23f1499d1ab894de411034. 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/QM3DF2248644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fde129dcb056b42a793c0368bcf4285ec787d8227ff737349a04ca26c69a42a. 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/QM3DF2291631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc1c40ba169b4d9dd64a3332873dc26416c5b75d1f022f14a5395b59bce4755. 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/DEQ022384194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84a1280448fc42f454105b39a951e4ee375f7a45d39f447a1a9c91b99460974. 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/QMANG2216507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5475e99bfe7616b656c70f021f00ada2571bbe1506d08a19d198e08f90ecbdfe. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USANG2432008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c40ee03d391846a2b3f2e66035194061f8db3da89fffc734e9594d7e0eeb854. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEQ022384404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25a182b45cdd0f0933d5a1c6313c067276a61f3d84038717c97eef620170e97. 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/USANG2210375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef574f7197b14da67745a2ad6b74aca81bb757e1410a3f619b589d8f5ad0313. 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/QM3DF2269885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b0481e9fc9e7742aa8340e02ce6fdca221c9e1c14c8365d56554dcdf06096c. 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/QM3DF2269895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dda1f6a2647b77cd2216e993fc573baf973c37f5bf0e8f7da9e506bdc5807f9. 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/USANG2264184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3901a1719b2619de2feb8488896275a66493b7700beee4f8eb08e2c471461d0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USANG2253777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9ae678327d1cf403d37bbe5d5462587ad0f4a52801dacaf57eb0cb514a78e3. 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/UKZGC2408321.