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 0x7153c2f06e9add08833ac4df4cfccb76b5068f09ab8c6b01ac9078409647be1d. 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/17c27c4a-85bf-43a0-8319-1db29f629d7b.json and https://artists.proofprofile.net/proofs/artist/17c27c4a-85bf-43a0-8319-1db29f629d7b.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 0x1f1b9754298f86009548c49f57606da02c7db6fa68b0f4b33b948fcb1f22b785. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/CAHQJ2171066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46d22addb519928e27de5073a078cdfc13a1f7191a9c9d4d15ee16c68b549d5. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/CAHQJ2171064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec56989f2a737c0c7d42aef559f543feb10151d59656b0f36b0132c5e242b73b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/CAHQJ2171057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea77bf1413e20cf86dd33e8d3dbde79e5c5756a375d0cec9156ff8dde17442ca. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:00:55Z), 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/CACWV2138849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2074abc47a3e17f09e6b5f77d54e5405c11e927d5c7c1aecd0b9c6befbb097. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/CACWV2273798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff3b6d9c7ae04f712dc18410ed8c9788a3b4f7d9c026cd1c64c82c4e09e6bde. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/CACWV2273799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba8cbe34018ab35f43f4bcd8715947e1aec580ba3bdd9bba58e471ffa80a7e2. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CACWV2273800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ff7f28d820160ec8071b097001a7aac7e95043e6136a90270610febc679f80. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:42:47Z), 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/CACWV2326483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34330922ffe2677c1cd9b069602f7b9f0937603266d2dea26b2fcd4c42e1465f. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/CACWV2414848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3939bdb95ef1f3bd6a023be9f2c097c2ee3b53094a19c1c36d197c6325d67e99. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/CACWV2414832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668d6a0cec800e7699ff62be314effa47cb5da0beb52a2f7520ea26fb95f7953. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/CACWV2414840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f06c5df65bdafb2dc67a401a482b9077d4c7201e1b4582c13b05a6a4e60cb90. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:55:49Z), 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/CACWV2423253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a5b5f8a145e511054a3f5b99da19b3b010a89c6f707d2f46facb8ff0382ea6. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/CACWV2440074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54d474731604a2d374d8b0066733323cb86555acb6819c1e74d9b2c02a87ccd. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CACWV2440077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d92935596cefc65d824c043fcf148e79b7e540558fb3c787345ad8df5bfee4. 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/CACWV2440068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69c2ea8d33581b3a44f54c1b82b4937bbfd6036fde095eda669d82024520d01. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/CACWV2440070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8cd704c7d3dd5d1be1c4195ce3a21c5105c514f5c3e465c0f01243f2b99a32a. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/CACWV2440089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef07a8cc5e2a0e5134e971c62a0d870b42acf777c9b1cd17a508099bf86195ea. 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/CACWV2440105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa519de77c67a02abd8eca5373da63a967d5f7d864c83d78810e0bc592363683. 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/CACWV2440071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4baa376e656e21f5ae64cc995c3797753573e86725dfc1cb82644811bbde36. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:04:49Z), 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/CACWV2440073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b840c350dd033e10242a6167f8d3ce5ebcff2c4d8a9296ba9a81f4423c1907a. 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/CACWV2440075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a0788bee910dbcc5c2744bd5c8e881c4113fe936576b173e5f64467aa898fa. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/CACWV2440078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ce8991ae0baf0327cf00f8361815d2a86297406e33abdd2b9c9e6d4b369d67. 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/CACWV2440079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf42a88018294fc6eb2eee7fb5452f175dbcb4d1d3a16fe2260d606098594f84. 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/CACWV2440080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb2e7b0563a4b1d3da0b085f8a1253c8df1a1db7b9ed9e5a5b59c76bd7921eb. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/CACWV2440083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0230f91a8f25a4b7144b06697d3083531caf5b57246ac209d057540b405260. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/CACWV2440085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583fec4df2f3e9e2838802954058d38a5dc3dd14d58c0d4f7df82d5a8188389c. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:03:19Z), 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/CACWV2440087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c29cad5195fcdf8eef4691f394675f61f509148147dfa7969cc1186df9167c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/CACWV2440088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85a2b4b773b32840db1bf7640bdc5a0ebc30746c4880bae23e29c9d6dc7464f. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/CACWV2440092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd7ce5d4daaf2b46678448522e4807b3d1be70cc7d6cc333c6f1469bfb4a028. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/CACWV2440095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d65b0abe44e7b8dc48d82e666355c48956f4b0db10f81475674bba4b495dad2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CACWV2440096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee68834182a5240439c353d18a696f4ab899b50f58a48aac57beb3b7f12794d. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/CACWV2440097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f6cfea441188f544ec82c1ee22ff8357b35dc9f7f6e1b814c8c044aef47ea4a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/CACWV2440099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1337a8fc91572e865e0bda7f39d62bfccc10699372ad83d726db5afd33e165. 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/CACWV2440103.