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 0xbb5e32838bca9b8081df68104b3cf5dc614d41a9079039f443f32967eccbf203. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/38a34868-375d-414a-b97b-9a47b0514149.json and https://artists.proofprofile.net/proofs/artist/38a34868-375d-414a-b97b-9a47b0514149.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 0x580bb3c4de11b67e85264c842102a1a6d060e8b7e905cd5331a0064e65a0c062. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US2Y71114701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba549b263187cc6133729330906690a8c778bb285685247c4add25c8fbf36ba. 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/US2Y71114703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad91ddb97e7b317e3778151297b7d2cb3201ef1d9effd8608e20494047d8ca3c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US2Y71114706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda034015cde6ccba783e9ce0e0368f677f10366902baa64130d9ad580b2940ce. 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/US2Y71114707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1321a896f3a20a2ac1ccf3318dd5afcadc788d9b7a8b2dd8c4399db31823a92b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US2Y71114708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68f0126abc2e5f29d8e56a21b73e4aee281d8e2a7381bf235fb249cb388bdce. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US2Y71114709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040ef6fd96371409b98d4196323635f79818871e91ff5278af264ccfa30ff905. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US2Y71114710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cce57fd25cc2bf8e2fc54b5ceeea61a6373f0442348a58a4106e59a14c48a0d. 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/USHTV0910219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd303bcd99b89c987069e124182de2766b2130257ba8114d4a5174e3675785695. 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/USHTV0910220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc20e50eb0ef423ca44575bf17858cea7ec97ae3d1f9a840f725ae5b6d697c2. 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/USHTV0910221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eba9083cd4d5b6f37f7453b528f0954d07a41343a50f7d8bcf56593dfc4e15c. 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/USHTV0910222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f819edb47ea890bd58b360ba5d5c717168500b9c6b63b28bf3243ba3e39566. 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/USHTV0910223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2825fdb83c1ea57e9a170579980f679f2e9539001b712395cc8186865aee60. 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/USHTV0910224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8888b84083805bc58441d4122e7caeb27edfb1707427340a83e60532143ac8. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USHTV0910225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224bb4e72f9305e34df1dd2ffae13cef113a5b2d3a28c74a3106e45472f3ba3a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USHTV0910226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c23122a200c22e47da2f8aaf51796fe400c63546815f761d78e321cee59f7f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USHTV0910227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa263e0127cb379b2625ae696b7285376bb29836f81fdb3111e347ea261d4d3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:11:44Z), 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/USHTV0910228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7cf0e7ad3ba24d2de5440c88414246e566f1ae54b9e29ba9705d3f861f8b2b5. 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/QM7281581646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1106ee93986b2ce8001102dfafb8e6ad3842cd9e8fd958d34e7895be5281f4. 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/QM7281581647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf677b02ffda246e52c370a162715c5a855b05c2ba98c4f0fa2cd68cb7a40b8. 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/QM7281581648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023c71670259190059cfd3a5fa2c119bf0c683041ef5773c897655f152146df8. 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/QM7281581649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6533cb61766089f632453a0ef33cf4ffbd4ba7b80c27bb940db5a38e323707. 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/QM7281581650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86e48a9d69c6a7469e71eed677cf11232c97828abed1431f851a32296074410. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USQY51086106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a6babc1b6a981750172aad9a23bc7c77861a27f76d550b7e2f4c6b0f428312. 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/USQY51086107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fce3d84e47421240bff31854b08c8992f15ee365840a3b93cbdd444adfe97ac. 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/USQY51086108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f25ffdad73cf02c426c3d938295416dd969067c57a9dfc6a78402e703a155cb. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USQY51086110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7286dead7ea73d33ba07bce54608818a9c8e1e0d48051b65784ba26737596921. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USQY51086111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1e87b0dff06630c37940cd5249d11102013567fdb0c36871b62d51b5d5a48a. 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/USQY51086112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb75f81e6702c26dd6232f4a08e3c8761158be5b40c293ec5e754e1dd2a4973a0. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USQY51086113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00f847cf3187423827ecb261e569f807dca4b4f790233983cb14a0ed4e24d57. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USQY51086114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f8c168af8dbd3664f6d567775d2abb6e97690f8f5e6e99d7695cdb2725099d. 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/USQY51086116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412aef0cda98218cd3d5549e84b36b196e9e472ce690042bde4083a5afa0d411. 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/USQY51086117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec89f5beb0380d3406ec1fdd69cb253958b4689d40d70a2a0565d0c81778ddc8. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USQY51086118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe758c7ec96cd9a261b0b61bd7851126fbb53e29c7567b7903dbfe48ca52fb73b. 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/USQY51086119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580bb3c4de11b67e85264c842102a1a6d060e8b7e905cd5331a0064e65a0c062. 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/US2Y71114701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba549b263187cc6133729330906690a8c778bb285685247c4add25c8fbf36ba. 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/US2Y71114703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad91ddb97e7b317e3778151297b7d2cb3201ef1d9effd8608e20494047d8ca3c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US2Y71114706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda034015cde6ccba783e9ce0e0368f677f10366902baa64130d9ad580b2940ce. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US2Y71114707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1321a896f3a20a2ac1ccf3318dd5afcadc788d9b7a8b2dd8c4399db31823a92b. 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/US2Y71114708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68f0126abc2e5f29d8e56a21b73e4aee281d8e2a7381bf235fb249cb388bdce. 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/US2Y71114709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040ef6fd96371409b98d4196323635f79818871e91ff5278af264ccfa30ff905. 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/US2Y71114710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36591acf4a3a618e3a2cd6b37fa0c6c8635c87ad09ca53a4e9cbe2b265418c07. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US2Y71114603.