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 0xd249f06b99a395e0c364062a35a1a98014b9dd5b9cf2f6dd7bbbb9e5de3e6720. 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/e2c56ce3-a4c9-4687-8e31-23a401309c36.json and https://artists.proofprofile.net/proofs/artist/e2c56ce3-a4c9-4687-8e31-23a401309c36.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 0xbb7178ec7eff94ceaab7c65576fa9f42eee8f3b255160d808e5fbc73362669b8. 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/SE5IB2113303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43d031cbc74fbfce0009041b3bf62e1d2c1ffe189c3d600318e0110ba1baefc. 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/SE5IB2001093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3379088f634b1026589df7f049ebd28d3642cc5ff5fb7f5dddbb3d5cffb3bc1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:05:23Z), 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/SE5IB2327351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9fef19eea82fd0d4b4728fcf5cd5bb6da077fbb18a0f9783302a4441d7d9a2. 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/SE5IB2327347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0403ed42703891c5bd94074536aa10b8d7e295568fa2997e9d8be2ba27c10ea. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/SE5IB2326023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d9d4a859a4f8c6c2889da03270efa648be3e9f86baa2022eaa1f34efdb0697. 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/SE5IB2326019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd034569793a42d93ad58ae18e482b1d3f72bc439ac2fb1600d183b2d7c512c7d. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/SE5IB2111908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c1f12e74c539591797f71fe7b7e6de294037dbcad07424ddede99c7a16d5cc. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/SE5IB2325287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39279a08b6095dbbff25255c4a68b5b789f31b279237783fde828433e958f0a6. 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/SE5IB2112619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4548839ee6e3ec341758df8022de3ccdbad62bd82546fae7503f1082d23dc02. 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/SE5IB2319027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440f803b4fa5d8a67b299288cf10e3a9b3a41fdd3319b99d4e661b3c4616fb28. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/SE5IB2318979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8111886e97785073976364dda5092e87f02e862fedabcb6a4153257f271cedc5. 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/SE5IB2309551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f4982cc9dbfe775246caa1b258690e1dc6b9722d117116b06dd7165593f29d. 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/SE5IB2113699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8c28b39de00911954abb190007c21058231a8ffb76a29f57510275e9a4e516. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/SE5IB2113681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7db5f34872163d69a5ec3e8b0892f0315f25004e7807659788364314ce08625. 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/SE5IB2113663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e18f83f6ac0a5f20f5907fef4d9fb400edc25ccef6547b87aa058816d8c2b9. 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/SE5IB2106427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93ee3ae1cd21892be5e03b5187217ec87cc7ff662684537086fae4170a3d911. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/SE5IB2112646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a0406475ed8cbc097e3f53b3eb2b162ad8afd6279f7066ee5578fecb937d57. 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/SE5IB2112637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea9ceafd6c7617a0cc0c77820c73a40e03757e4447e97777f7b704277496bc6. 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/SE5IB2112628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab097be1b24505891edd458d7fc273cce65e5bc4f6d8d3647ae9a34a6ecdb078. 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/SE5IB2112610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd068eaec764f12ac8042566317353b6fc49b8fbc3650881edbf15f7a146aedeb. 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/SE5IB2112601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6dc7910e8382f18b6cc328e4306193b88882871878b0628eab3575fd9adffb9. 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/SE5IB2112583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d488cfa0a1654af896bc48ddbdf50c0db4e8ea680f8d5c0286af0c20a054c1. 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/SE5IB2111242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11950ba39fb884ed9deda5ee1a8a7042ba4266d8204e641ef821e23a4edf78f8. 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/SE5IB2106463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9378ae9339b51f5173385f6eeb942ca15a3db3428836d9cb28b371d9688239e0. 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/SE5IB2106454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2617ca953fa9f7bc8f493180cdea350903db2c92fd233fa34b02a30945f5d839. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-21T22:45:59Z), 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/SE5IB2106418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12da5d57c2cd2b7d6cf0c0f9f3de8e1456845d3f645f89e6017c423593f34f85. 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/SE5IB2106382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a55369c2c4ac109795b44a7d68045e72d6536c2e3a8e5987a2798f39e64da9. 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/SE5IB2106373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78eb13bbe633f994ea1b58f995eccc6ce939f31f05fea62ea38fed2bb27e16c3. 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/SE5IB2001156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd956d1f7c193eb585f0f1c09edf4a77d1fb7094dd35b3417d3414d707d38a7. 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/SE5IB2001095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62806c0a514f4d6959061db5eb1ae3dfaa132541b4c84d797a8e5120e19889a8. 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/SE5IB1701534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39279a08b6095dbbff25255c4a68b5b789f31b279237783fde828433e958f0a6. 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/SE5IB2112619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd068eaec764f12ac8042566317353b6fc49b8fbc3650881edbf15f7a146aedeb. 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/SE5IB2112601.