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 0xb32f07c91814849f48883e4e781cac7b5186dbc9c157e8ac0b149df41761ebd9. 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/7d5bc7b0-a7e0-4973-a389-541d8474447d.json and https://artists.proofprofile.net/proofs/artist/7d5bc7b0-a7e0-4973-a389-541d8474447d.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 0xf92213d4b3a0f41ce9b2d04b2501da13a4a8d3e504f7a5d82e680b18aad5dc16. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEZN82484228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb3c952177c74bf61bcc2d06f7d59aa82c21de0f9bcd5329927c7273d1913de. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/DEZN82484845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7132a3e0011222ecf58fc4c5c825cc6114c8d3779d7d66d55d7124200e9db5f8. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DEZN82484834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a5623cb3202200b12f401b35b07e6ebd3d7139e5d08a93f4df2dacf6191c98. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:26:49Z), 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/DEZN82484822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77443080ba957210dd70c12ee7bfc0f44482512a0bd41a322c13b3289965c32b. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/DEZN82484261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbfab3880cdec49406363af0bef10e4cd9dcf454141973527034418e802a7d87. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:43:28Z), 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/DEZN82484233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd3855daae06475c13360a3f67c2f78099f0f6f9dfb26c9835ce9a75adf19de6. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/DEZN82483718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c2f6178606e08d58b6fe336a942222024665fde295aa4395603786f9a288b2. 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/DEZN82484835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3713303fddbe1be934ccbf55b45a70685b13f288a0dfc024da9dd3f454960c3c. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/DEZN82484829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4167d91bff386793dff73d9be33af8d5833888097cf8df913459ebe66d223a8. 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/DEZN82484823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72a67dd72f05d41b6c5546f78cb4a0d6b66aaf86c94f38fe10ed9aaadc28745. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:45:41Z), 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/DEZN82484800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb4fc8882e5e37541ecc22b2e9b4ff20f4c36dc598519889042f8872b10d40dd. 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/DEZN82484227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2918b063ebac42a1a944a6e792ea8b6b515a49599926e9b91e93318270bdbe6. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:27:19Z), 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/DEZN82484230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e8edb331173225c10d6df1141e5e3af84803bef543c3c81cb7ceacf0992357. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/DEZN82484830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b1cf4825144020cb744e0ca6ee655a86868c38e32ac069eb59c9688b4702dd. 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/DEZN82484853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bafe624d9036123052e82ca316d323ac37a03e7acacb2fd43e40b2255b9e5f8. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/DEZN82484262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a28c351e292e3ed36c33a13d859191f8894295025f11949c098556d31cb665. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/DEZN82484235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b0ae225772d815ad3bb53669f91f7331c93c8e890576c16d4c9ac979f5add5. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/DEZN82484226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3017c17dcf280df41650afa00418ab888850afd0b2cc331562ece394bfbbdc6a. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:46:07Z), 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/DEZN82483720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87bf423f129b66654cca5711460f581b18f5c8ae8ee400f00a20e527172136be. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/DEZN82484801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42507ed8e04823ae330dd202e4764bf23286f652a63715f7d432af44c9d694a0. 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/DEZN82484264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab90845e5d7a00268ec9115080ebca276787c55cdce525c167d4a2fb92f89a8. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/DEZN82483679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85af8833549a950539dcc0991e0d9c88d0a0d35fea02ec042efe5da2fecaca27. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/DEZN82483677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e674ab9fbd64692e991621cf3e9bb9cea98c5b4fad38b71dc10fa742f43483e. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/DEZN82484850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9036e0065e521f49728dc5ffda4a3ed5f29c637f5c58c8ae81475697469460. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/DEZN82484842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50706764c06f7f8bc6f476290bdcd79accf92fcd6d1f205bcbacc1e63eab42c. 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/DEZN82484852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779213a9656fdf1e17e077d6c2c06e7a107bc6313b06bff8ac33b8dbfd0cd23f. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/DEZN82484263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4576a347f68494f3e9cf82714a59041fa9e2ccdec2cef834e39df5f412e22c53. 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/DEZN82533616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf1ae2bb6e2666b694aac90557500e063a2bc32f840321d918177ceb2918297. 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/DEZN82533707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1910a47813e57489c5f600e6f06f9c771f4f8c5c879c1637386a271d99deaa2a. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:58:01Z), 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/DEZN82533760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7725b792c05ccf9b9148bf390d1f8104bf0f81f788d15da9e7fda9ce8c188126. 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/DEZN82533643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54df1ae01b3191688b37d35964faa4a0c7df747697c63f8d17097eb74c974b6e. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/DEZN82533728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c62539aab134862a81f78dcf7aa91a3aef2491e18232f3543f246b545ccba4. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEZN82533599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0eb88165a9ebbd9fc4632f87bb68d5ac1f496d56456f57a0e64313d3366898. 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/DEZN82533619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ed01c479254c00a55ec73f16a5c2c277c32d6c025808d9260cfab83502ad97. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/DEZN82533745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a8052b89c1d63a9d7dedda7707e1faf93bdc6c08e14792a4a9543d2bbd788e. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEZN82533702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a17caac36e2bc84220331b209390c0f1e1bb54a4377b699fd0c1f19ee05fa6. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DEZN82533766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd498d8c511952ce227de579d1fae8f32fbcc02c78c244467fb1fe55680e965c7. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:13:18Z), 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/DEZN82533626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c56b7afc0699020a41d197113b05ed44b9f63e90bf708a40189798303b3c7c. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:42:10Z), 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/DEZN82533731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ed3ad608c9edc9ddccfaac906248a95f302ffb9dde27b5133236df0362fbb6. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:27:50Z), 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/DEZN82533695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7262f6e6b6438b279082d414454e44f09b0b5769e0ff4bad76f8d7de7f8fff. 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/DEZN82533715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb306dab501f0bc796e4cf290e29b7d31110051476955dd60c92170b3fdcf611d. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/DEZN82533654.