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 0xc321b799498d670218b0f100e9f5ca2e47176eba257ea7cb513bc3b22f6f94c9. 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/ab0397f3-3691-42aa-809b-2bd6d67289ff.json and https://artists.proofprofile.net/proofs/artist/ab0397f3-3691-42aa-809b-2bd6d67289ff.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 0x06d32b293ed792aaa15a9c49d63138f018a688ff30d298ea6a967cc32cf818fe. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/GBSMU7460465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f8d99632c532d454ddab9587668c12b9deaac8e7b3b112be0fefde825406b2. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBSMU7460474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3974e9f8ae0cbe8eff22eb63dbf9ad0c30beb638d33755c7bd9e91119fc3e93. 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/GBSMU7460406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1918cb122365f6fb696d858cd10e43eba15823178238bdf2e09f50cfe947e1c. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/GBSMU7460408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9b8c1d97be806c6d2af18edde798b1a7e16771bcb4962b516277e47b7d8cfc. 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/GBSMU7460410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18e2a5f7b52959ed48e20c88e9ddb886d6ef4c815c9f50d55c8e62e6a359dc2. 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/GBSMU6569349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc25483e3d1cc70018f3bcd16c5a89ebc3b346a2c0e444dc67818881c4cb87d. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/GBSMU6569351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257604ec62484c8de4c7faf1de0515d44a0b12089a299fa37f9fa13481c14574. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBSMU6609528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb32fe481816f69ee8d5f5dfdf0ead9f5e286bef51e3fccb3acdda3586d8007. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T04:20:09Z), 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/GBSMU6609529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61b1b747f5e15fab73671ce113cf064e7366da658b196e18225454c31aecf79. 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/GBSMU6609530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6935cb2af7ec3eb232dc52160b085f3f72c999600b3b4f72416c70680ee09bf3. 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/GBSMU6609537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb821ca636905a7c2b3fdbfe293df4f1667c8dbc5b0bac2cef68ba0bcc3187b. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:23:19Z), 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/GBSMU6671185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020dda3a7466ee90ac89b339e6d9cd072b9f6898154b6d5742adba9ec9c0dde5. 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/GBSMU6671188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa350b0ff0954e998cecec0cad3655c64260c40b2662bd0fc5fceb9cdd0b12a0e. 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/GBSMU6671191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710f357c392d79938958f0e1bb1835fd32dda5eb7e513907d702406989f81e6e. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/GBSMU6671194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b0f3f907aaae8b8972cbd2fe4eaaefbba9daf8056d0311477457fab92d3ac2. 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/GBSMU6671195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c4cfef2a93a09583299b2a260a3c27b148c2f6e6d98e167479b48410b980f8. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:46:57Z), 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/GX8KD2386375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8683c151e527dc585e20eae45b7675244fc3f2cc4520383535118502bed305bf. 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/GX8KD2317711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1012cb17793d46cad849d88f54a00a81c5b7a996a7ab06944dd58dff76c580f. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:08:23Z), 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/GX8KD2323287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a234d32b3fee101d795e1f827d024b7734d415537bf4d5215805cdf8178582c. 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/GX8KD2362811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307ffad3ab6bfc68b0368af843c52c0f0ba8e00d90a76d29ffafcda7472c419a. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/GX8KD2373865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7f1079b96afc981ebdf84f35040a4e3c5cf44f7c7f4165df9bb1568a8f7e11. 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/GX4R52452507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854ce3bb14994e74f7de049add662f2dba2d099d358b6fb1c67d5af21c117e5d. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/GX4R52412324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4862054aefe8a7762e6cb1255da14b9de15984b598f7b6219bcc1ee042b1167. 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/TCAJW2561711.