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 0xf18b6ce8a6817c10709c3e2bec1fb43e845ae221647300dff22eee0274ae8d70. 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/f71a02b5-c50d-4d7c-aecd-93788cb71706.json and https://artists.proofprofile.net/proofs/artist/f71a02b5-c50d-4d7c-aecd-93788cb71706.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 0x7f6b9bb66e45c2a76918912dd835157739dc0bf7a074e0c55ffa208eb27abbfc. 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/ESA082001377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77938a3eb42851a38df5a7bceb13e3fa4ff2866616ffca645b380a9ac050e01b. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/SE6XY2222769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2741f4c8c5b0899ba8a109c38e4b7c6c589b5fe5a413f172d53ddd26e8de2178. 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/SE6I32361455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e7c8e6454f0ac2126a8495f3c9a0ca82abe1f2c596de78fb7308aede66a78e. 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/SE6HN2371371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6290707f00289bd298b35ea49cc3a55667d3759da39bacf4d54d8d6ea1e19f92. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/SE6I32364762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc82935210f95a5bf62dc9d8a0ef5772a2d042598ebd3c1112c291af169f1ae. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:50:32Z), 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/SE6I32364764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2741f4c8c5b0899ba8a109c38e4b7c6c589b5fe5a413f172d53ddd26e8de2178. 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/SE6I32361455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e7c8e6454f0ac2126a8495f3c9a0ca82abe1f2c596de78fb7308aede66a78e. 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/SE6HN2371371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6290707f00289bd298b35ea49cc3a55667d3759da39bacf4d54d8d6ea1e19f92. 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/SE6I32364762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1af0109fd8a738d3fbddbeee8928cac937c0d399b194a9a618217e2f4606e5. 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/SE6XW2382205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6108a1e75db73f4e303542913ad9bb85f8fac9e0acc3f25610be11b6724f4015. 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/SE6A92321763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa077d2f3b6577f41d9f48e3715ba4abc34847dd3a5526f44b2f1ffb37f9d2a90. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/SE6XX2317583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7758e8733b72f613c63546e4a8042fde1ce4b8ea0c52c4e9b139d97b046baa. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:06:33Z), 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/SE6QE2405614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7eba330e3a8681c649eb971510ffdb7ee7f806f5c48ed815d7eccc83f92a27. 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/SE5BU2443696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4139dce3aa9402df85fe45e0727c599b3e00cf68c4ad50ed5076703c320d429b. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/SE5752445947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe357e94e389a63ded336e47cc8e39bc0a1c6014222bb1fa72f3cd2d77677e785. 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/QZK6F2452263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe357e94e389a63ded336e47cc8e39bc0a1c6014222bb1fa72f3cd2d77677e785. 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/QZK6F2452263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7eba330e3a8681c649eb971510ffdb7ee7f806f5c48ed815d7eccc83f92a27. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/SE5BU2443696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ad28b86042be50ecb4e7e2c9349d9f2f2ec2c59c24b874a57d1a0054876d6c. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/SE6I32402497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85eeabe412df6884248c8b24ababae02371867452785c261ea1a385900e28d4c. 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/ES64E2485524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6108a1e75db73f4e303542913ad9bb85f8fac9e0acc3f25610be11b6724f4015. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/SE6A92321763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20053916aa83ee2c11dd933b94e039c9cab2180ac66434cad412d70b29f84ead. 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/SE5BU2511488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1103a121cac82d53cf63164c818518c63b9585ce6c4b269efa6fff1932b21be. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/SE5BU2568776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27167e6a017db81b3d9560ae53ad953e2d5744a583921519f50c9232ff6f0db. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:16:37Z), 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/SE6SA2416942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9d5398034ef998136a03fd529376b74e78c6c77ddea4efd148965a457f3873. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/SE6SA2450301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf014abb7949e3dc5a1d0e99e0665fb7848c84956c6617bb68723d79c939951. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/SE6SA2489771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20053916aa83ee2c11dd933b94e039c9cab2180ac66434cad412d70b29f84ead. 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/SE5BU2511488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d9f13c9327107c6b894a9dafc5580f7928b9401676614c806595e0f333c976. 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/SE5BU2553252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3cfc2b664d4ef8cab9eb12a6b96442c4312656f740a950f85de7197cca71d1. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:54:03Z), 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/SE5BU2568777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96cc66f5ddd99763b2aeda37ece51659b2cfdff4f3c9a3c04213555d47979af7. 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/SE5BU2568778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f21eb490aa938925c0d8c20213289ab173a53b565018ddc5909570d8e79c564. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/SE5BU2568780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f88738d918b0f2e0efc0c592b816f47536c6432e8ddef3f3ae48dcd3045ace. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/SE5BU2568781.