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 0x49c2a6a4df5aeb0f3cf92bb9ab1878052f470bc409840051c6586104510365f7. 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/dc460269-7c18-40ee-ac51-4738beb0b977.json and https://artists.proofprofile.net/proofs/artist/dc460269-7c18-40ee-ac51-4738beb0b977.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 0xcf838902cfcb3fa63e50ffc8770ffd689dc697982c10e61927bc58f0089d2198. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:28:34Z), 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/DEVY81700029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dcc98bf420770de8eb24dffc6658ee49f12402b22a9d657e7d5f989d56f4aad. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/DEVY81700757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe9d77dd6766eff41c429174d227639c3b974cb883a3e470c449c2be60ee4b3. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/DEVY81700758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd824847d4aa98924956ad0a852f70eda8d68d98cbc66c91c9d02cfde855a29c3. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/DEPI82010894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8433f431a0e9050976b4a83e7abb7d4246bfb17c1892f10d06b79f9d44891d24. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/DEPI82010903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c452109d3ef659ddb10a2f664576572bad52b7df4003d40af8e3173258854a. 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/DEPI82010904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a6e1e51ac29ad7571a70230f3c251411620f0ea81a72b729d5a494c0a41980. 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/DEZC62120532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74ff6a407eae39cab610e4cd6fa9584464e9b6bfcfedb6b94658b6a9f5ad98c. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/CH7812221531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89096ed89bdc380b0437261d848866f065f29a44305c69f5798fb0c6b9a9726. 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/CH7812224896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fea0f40429c4c664a28cabc3d2bf35560f87923876b386fd65bc4ef7f2db03f. Chain 2 (Bitcoin): anchored in block 959011 (2026-07-21T16:19:52Z), 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/DEVY82300194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900cefe19cada2f412913df541076b15eba609098a81fe9b638604345ac8555f. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:09:44Z), 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/DEVY82300202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaec2548d8e36972b77e12177b184c92293762801a2e228867a8095473d412fc. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/DEVY82300146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442fe063ebc3946e2e365f646e87959a9754c83afb74defd7351a2d3ad353554. 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/DEVY82300177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdca5669d569537702c50e3c6f88a9b4f225750878db26563872833c8ceb997a. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:43:59Z), 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/CH7812347818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b7983f1a22e4b1e6cb53ef7958ad82d8a5663c07c553ed33087cf953e0398f1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEVY82300221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5ef14655751135e346b064668db984e6aa4a781205e0dff693b47eabf905cf. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:06:37Z), 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/DEVY82300207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806ada12ffa160df0a260a6f306de83f4c7cf8469ccc60038178cddb67552710. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:10:26Z), 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/DEVY82300222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3b2dd6d9cf8fa05dcf3ebf829638f525bbb0bbd16c1fecb705d5468436bab5. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T22:59:33Z), 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/DEVY82300224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fea0f40429c4c664a28cabc3d2bf35560f87923876b386fd65bc4ef7f2db03f. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DEVY82300194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b3c5e6c59e873506a64878fdd7c265b2b7c8661de76131399bfa075056e48f. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:08:40Z), 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/DEVY82300264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce136afc76f4943888b793a51b9bf22929058fe5bec54f7eb687147ada9cb34. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:43:50Z), 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/DEVY82300267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6b0132103825ff854d5c6a1e5fc49b4e9808176bc127f21eccc3818589229c. 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/DEVY82300268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71a3fd8fb22cb2f55426eae847a976d10c19d3d737d61024db1b0d0e0b72da7. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:22:18Z), 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/DEVY82400132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0316a5ee69d3623a2fc1b2e9131a74453826683417e9308614baeb83ad77ebff. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:17:43Z), 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/DEVY82400279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71a3fd8fb22cb2f55426eae847a976d10c19d3d737d61024db1b0d0e0b72da7. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/DEVY82400132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b891e304b69e9a2f789981065d067a504b9ff19429871677b34377d01f6734. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:50:09Z), 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/DEVY82400209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0316a5ee69d3623a2fc1b2e9131a74453826683417e9308614baeb83ad77ebff. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/DEVY82400279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0464a8470d5a5393e92765bb613043b8887a69a7d1938702c5b32a3fb23e209. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DEVY82400333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ec1fb53c6d794f7acc78cb973c9fb91e021382799c94a72da1ddac343e5e5f. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/CH7812526667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe155190f268831c4ee8f22a56d3272531845bee3ad8174e3d7f39275e54758. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:16:44Z), 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/CH7812527241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f1a575eb274eaefe89a2e04efa9cedc3545cbe5866b8527bfe7556a286c043. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/CH7812527243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf082e974b988811dd8255508351d00ae6ff26d1d71729d09ff0ac76cef6630. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/CH7812527598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ec1fb53c6d794f7acc78cb973c9fb91e021382799c94a72da1ddac343e5e5f. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/CH7812526667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26a5ff1539d757b2db94870e79f0dfc7565e76b89a5152f5e94bb154ecfb03e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/CH7812527599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f1a575eb274eaefe89a2e04efa9cedc3545cbe5866b8527bfe7556a286c043. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CH7812527243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf082e974b988811dd8255508351d00ae6ff26d1d71729d09ff0ac76cef6630. 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/CH7812527598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985f8a81a94a6eeb45d51a69e5e95a787b29cd2ba95905fcae98ba8cb5e6f785. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:17:59Z), 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/CH7812527600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208d548264f60895a7bfed4c37cad876c9024fe7ccba34ea61a0f515d01189ed. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CH7812527601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5afe1ce50f57fbe038d9c764b345a3e80e709ef0df8b6dbacc1e427d0fe07505. 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/CH7812529176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eaa6c838a46d40db2ec917d7aac0d787002c9943bd473e832d2f90637159ceb. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/CH7812543921.