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 0x9213b3dbd0c1fbcce7832645f7d0fbea2d784fe0860141018c267b550a7ecbe9. 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/8213576c-d501-40db-9828-c6ae47fe7acb.json and https://artists.proofprofile.net/proofs/artist/8213576c-d501-40db-9828-c6ae47fe7acb.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 0xb5f491686f0c234f751fa054e321c86fafce6c46a9ffde69d8f33d7d2c80f02c. 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/GBKQU2014067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7eac7d7e5fcb7d185cefff45c91c028e27d7092426a1dfc32a71ddbf02689b4. 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/GBKQU2049164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb656a6ef4c143c2f991c74919996e9cb3b6b4276370999e75ac6e9b470401e17. 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/GBLV62011300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e61d3c8e65b6a00596cee137a3232653cbea070b3ebd8a89368484190ec3ea. 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/GBKQU2141769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8d987f46db31084de1138dff1606feb01c49a1c90e63334d6c400b13b9464d. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/GBKQU2164729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c57d07c4bb3bf508f9122029b9c20f1478cb71a653177f5bec56ed7cada5f27. 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/GBKQU2187792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1687a0cc64e0cb3f1a7d0d2845a7d0dc95bd2a92d66b4576a218af4a958b92. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBKQU2064234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8d987f46db31084de1138dff1606feb01c49a1c90e63334d6c400b13b9464d. 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/GBKQU2164729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e61d3c8e65b6a00596cee137a3232653cbea070b3ebd8a89368484190ec3ea. 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/GBKQU2141769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726c793a04a57d7763cacafbf1b374ac3af98357251307579e9c9d638fed34a1. 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/GBKQU2106045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb656a6ef4c143c2f991c74919996e9cb3b6b4276370999e75ac6e9b470401e17. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBLV62011300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50cfc74e06520836145ed0f1b4b8e84edd1516fe72dc0913f774f2afa2e4633. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBKQU1965880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0267cccbd824e849f772dca5d9116521c5da774ff3af50979fbcc14f617099a2. 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/GBLV62037891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7eac7d7e5fcb7d185cefff45c91c028e27d7092426a1dfc32a71ddbf02689b4. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/GBKQU2049164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f491686f0c234f751fa054e321c86fafce6c46a9ffde69d8f33d7d2c80f02c. 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/GBKQU2014067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3fa012fe61b47df2dc31e7e5e5f062e2549bb5782323bd1d6e698dcc683da0a. 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/GBKQU2187794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8e7f5ad27466c991fcd9581260e52e70658d7a6ccd6df1d59f3443703504a9. 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/GBLV62119926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0972552a35ef746c5d0e5cc63521f177a819279c250c9c4a214fdc19de71f9. 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/GBKQU2211076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12333cd52d348b295a118361ebde3f474e866c8e597c70740f257f6ba123ef8b. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:54:13Z), 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/GBKQU2222468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xededdf3dc6f9cad2984669160fb24dae5f8c83219a734b9ac95b19d3c86127d9. 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/GBKQU2232908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a76406d06a11d10fa443d22fd46bc300709e83d3abf38d2b94a368bded45eea. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:28:11Z), 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/GBLV62218212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d7dd44a8d67ef5ee746f458a55c6fcc784fc3f40013022226743404df68090. 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/GBLV62321422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a59d4eac3a0099ee5225e96005d06da15a12a2d52bae0cef1d58db518f8e98. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:28:54Z), 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/GBKQU2425009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce7574d67b054882b34ad7808077cf0a0a3891d0e2907032b280951dd0f3594. Chain 2 (Bitcoin): anchored in block 958496 (2026-07-18T04:43:53Z), 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/GBKQU2250632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0972552a35ef746c5d0e5cc63521f177a819279c250c9c4a214fdc19de71f9. 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/GBKQU2211076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fad19a3efbd720609793d61a47328aeeca6f78a0a571747dd4f3272d61e4aa. 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/GBKQU2450375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01843d0c47372f976c681baaaf360ba817b99d669dfa9e4358d04e1aeeb35c5d. 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/GBKQU2432723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4753ff8b96a5344f40b18d0336ff9df6776db0c5db9deec48cab36cb63fdcab9. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GBKQU2471876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2ae5196dc6c63bacbd6d68e703b88377d42b339ffd4020e4756af2a8acd942. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/GBKQU2471878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1272c40d99807833b4cf83cdc71c823e9fd3a8e4df55b08647cc857a949d6a65. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBKQU2258273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01843d0c47372f976c681baaaf360ba817b99d669dfa9e4358d04e1aeeb35c5d. 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/GBKQU2432723.