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 0x147d08ac0a0b4907d7c4c756033d23d5e0a81ccfb7db9ef796410c6bb8003b30. 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/30c295fc-56ef-4671-9bff-d30c12ff94a7.json and https://artists.proofprofile.net/proofs/artist/30c295fc-56ef-4671-9bff-d30c12ff94a7.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 0x36417998b4d45b8abb4edbbfcd1253135754dffa56cd37ccdc8fe3dadfcab1d9. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:51:29Z), 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/AEA3A2504133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb72f3a232a44aea4d473450b9b2787f3f1006d92c534e6345e8b302a5e2e50c2. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/AEA3A2544008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac10b93f318a7bfcf94dcb5ad7c201eaf7b7b5cd604128bd810334e3328feb9. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/AEA3A2523347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9939a78b1e4f08d716a86678ca93d346862c7bcfb0209f93631a03dac3ccd1f9. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:46:51Z), 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/AEA3A2556838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6dad6b56041e2c508282ed738f5bf66f3cff1d17d930d712b4f07ab4b828a0f. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/AEA3A2557815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x163055437af154c7876675041751768de2bab71da4426137ff905163912704ff. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/AEA3A2541830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d18afecbae0c20ebb04b7c23a045a8003fa1d09cf28c1d49f259c17221f5d77. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:48:22Z), 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/AEA3A2575462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826e711617dbede60f282d08710936ddec214daeb83f328fea7f79989aa873d6. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/AEA3A2531522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc740aefb42be9e1683ce013f7c8129d56df0945500728ec8382397bdb41e891d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:49:11Z), 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/AEA3A2554660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329208648a4eb53afef42ce64bd507646d4daf78498ec28df616af128326da9b. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/AEA3A2542004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcecaae41665546364e383cbe5d4e069b3b70dff91b31de1bec2be6b85872136a. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/AEA3A2517513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcecd81c7a28d4b49455db599e553e78219b0af2a8af1dddecc6452ae770bace. 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/AEA3A2531909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c929e264b30752bb3d1096d2ba57420ab0fcafff9b7d73cac2488ba7b99a994. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:56:49Z), 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/AEA3A2535354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3e208086dc0dff472436d1ebf0158d5e1807de3978b97e9d76301001b0280c. 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/AEA3A2515306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81de2ae2e80089b4c453895c6defb5ca6c9aeb4d8c2ed34b722832390d51cc6b. 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/AEA3A2574393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8469d13270ae3edf7e9396eca347a96cd8c0ccd2a064a361fa07670f3a543aac. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GXBAV2085104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47fe0c358c3fd957ed39a3939a2fc00723d3e551e4fd14da12fa123c31e4c3d1. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GXBAV2007002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a746d52bb67dd129f831ede8b83a41a1e84ebe1ced3dc081f4d9c6cdba2962. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/GXBAV2079689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8261f6b08668b5f850b5ceddf6acb09e57dcd3bee12ffc2ef1c87b93c15690a7. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/GXBAV2064683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f6d60f750b656e57dc52232baccf924ce5fc62df9dd9601839180ef5d34aed. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/GXBAV2070733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e015eac6a08875ef9dee142b882a210977778bb779337051343e20cb76a7d37. 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/GXBAV2095160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf626f485de9309c73b821e83f52fd72f45683fca65f9cd720b5f7a529913c206. 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/GXBAV2065965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aac9a1bf7cb0beec83e7c3f5f5f2d5f1cc677cc1df938b007d199ef0c3e0f1c. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/GXBAV2009741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd395ca96715a16f26b0ecc6ac0e89453e856b2a9ef7f9e0afdc2948c25ea0fee. 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/GXBAV2089779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e14b6250647a2cbdf8fe74351428741d2027981fa2f36d2c7bc459088c5b81a. 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/GXBAV2062979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15215d5d677484a37860bac980f923bae589927e9dc0668c8d9c5c5f67d062f1. 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/GXBAV2094603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc8a35892554398f8691320ed3a0e6948b645ff0e66c10728912b507eb6d7ca. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GXBAV2035777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7ea7026f3d1ff32b88ca36fe500bc4fcb56d073ea24be0b720a64bc7f004cb. 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/GXBAV2049605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c233cc1285456213c8ccc873e1ea1475a46e838b13236d2ca5a55ca616209c3. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/GXBAV2041008.