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 0x376556d2ae4f9919423f2e3153743687dcea17e83746a0a19e8a310b359b2cd9. 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/b78619ea-a24d-48c7-95e5-f55e70b60954.json and https://artists.proofprofile.net/proofs/artist/b78619ea-a24d-48c7-95e5-f55e70b60954.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Final Chapter 2K6 Controlling Tha Underground
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 0xa3db494cfac66e4c0b3ef09daae396b2772b24b78d21ea645c5d089176db70ab. 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/USV351398659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8883af61c99a63dc825bfff378cf938d0228218c27d34dac73cb80db462005e5. 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/USV351398662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf451351dbddd7aa5053a250af2bf6f24b8a51bf67100432dfc006127a8997509. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USV351398663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8162d6888f4f507fb3c6b6cd50761fef3e2c035caba939ebe76df867020644dc. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USV351398665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cec121e7411d6cc547c348788392a01c5915208bc8bd78f7ce1d9f00a979e6d. 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/USV351398666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2095d37f5f61b973bdd15bf28f293026cfad0d1d055bbecdd9375f119039134b. 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/USV351398667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8a4bbb61cb9f7b1c5503837943df2430f9c97ec83b0d8ad34db1c488064064. 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/USV351398669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9437739de1544207e7821a5a67ae2caa407a0cd3200115206baa4551b880c67e. 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/USV351398196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7aabf1e36be8d496813abc7f485573bb59c50249a515703bead4ed294c852e8. 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/USV351398197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4528248da14e845fea6959d5989b1f2122ddd201db467bf885ace7f2743a02. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USV351398199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7de689043f42fa5ab961ab3f3ee4f9c0c1fd43dff8c0d7d6da0ce222ddf942. 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/USV351398208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824c863fe5943e6d2b2a1f1c72e91fc52da541357de3f89e16ede7d9ab8bdc31. 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/USV351398210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629596ccd88e7647e492014c61c90bd9740c2f1acd55ca7ae994f20dde257973. 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/USV351398213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb09b5b7ba7a1a920a892479bb10860af1e0d079125a7d69d21c4bc98f5873e7. 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/USV351398771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b3b448ecba01b0eb87b08b8bd3ef14281bcb7974384cd1bdfc702d6cc85ef7. 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/USV351398772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb31efcbed307eb20ff35b1fd75e57ac6ce141f3a88c4a4d35eba40256da912e. 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/USV351398778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5773d807fb6b94d347a434147382a243ea15085e5d941bb80ee3a0bfaf33a0d0. 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/USV351398645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79fab4eb1dcb8a0075f0dbefb5b134caadfda6e741e4e8d455f24e6688cb87e9. 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/USV351398646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f9137978c45c5fa3f0bfdafa1791d23a50566138a9b012b67d8890e2278b95. 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/USV351398651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8081e5b0232d2988f514f2193f2a62569c253e548d3146fb72f28ec87b9238. 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/USV351398652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3b8eab312da734b3aa886b464b931769f17ed79b86cd8662ce8fbcf4886747. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USV351398653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb73e0b2b3f85d8827a0533a540217dcdbc3f61d0780c58bd5cc5b50c084277. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/USV351398644.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8745ce5fa91ddb64b14c968ac71bd620d35f3ac3423348ca6e21a7cb15e20406. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/USV351398648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b955106b0024789481199e2fa8ba419f0cc4cf2f9b15dcb9e85a841db56133. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USV351398649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8d210d5550f4cc2e79ac9e2ce307cc73f5e2ac429eeeff9fc0912a8f0f0456. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USV351398650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19ce05543a0e788ee640a2fbbd8ea969a7c611ca2567cefc1b8154648564bf5. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USV351398654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7579e86f773a3a90273ead14bf54628d690926a1c82e58eec2b33d88274da601. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/USV351398655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2e36284bf1c67aa119ead2a4147985eb56450129430d38661de6268c69826f. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/USV351398656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a45c61a54562804f9160e55ae40d5c68c0663620e71f14229f83cb6c069bb5. 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/USV351398491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ddcd1a0a3e5fc464fc558edb8cd4d70210975e390457163f4e3e6c035ed838. 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/USV351398497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb900aca36668ef4a39b36beade323e6996dbb51a9c49979a03e1f2b0e89f868e. 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/USV351398503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462f60952df4f722316e41b977f17ac2f81d64fdf2f770429d9e97c9866758b7. 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/USV351398504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635fe8734ed899755b33233a79a1ac60102313344f647b3ed45982da811dfe1a. 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/USV351398508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475020edd23b0cb631e7ff185b5e819b550af43819257d131c6cbfa77d1fc982. 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/USV351398515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee19a11b8b1ce17eb2f98f516e25f5b41f0fa45e1b6b1ccae43cf80b65a1202d. 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/USV351398318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8a9e69fc61ac20e80e6c430f05f67e333d56303fa8028cd7860fb0ffcd5459. 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/USV351398683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a06ec96dd8b6cb6dc734f2a304280058d6ffbef29df8f6962e3ab183afb9e4. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:18:27Z), 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/USV351398684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239b11214d9c915b2c6f3ead0bc8733b0c961c8dd39e3bfaa9448898890ed79b. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/USV351398685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b58593cab203938bfe75ef45d0f9ea3fccf98ecd9ef1c43fba80f8dd14c1b51. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/USV351398686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe478084a8c004017010003d44536baa1b7066463e6a3e0bea71e9593f808e5d7. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USV351398687.