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 0x7d681caf906b6d04395747a019d7751be3fbb1a9090c080b8492cb4c8b24cf58. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/912c921a-c49b-4831-b24c-b8bfb252a910.json and https://artists.proofprofile.net/proofs/artist/912c921a-c49b-4831-b24c-b8bfb252a910.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 0x48a41e36a1f790c6b00f46064aab6bd2c4a4ca6391fd3394f986b2b1e0ca02f0. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:01:40Z), 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/PH0010500073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c90d31cb9d9c4f6f8ff5b857632ddc8f2d814cf7e906cf0eb0605f0027dede8. 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/GBAAA8700024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74f038e8b72ab879672ca80fbda10d7728d9fc13be01a9153cc825181217bf5. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/USNPD8100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad12f2039530f293085b73f96818bb1379889ed1d9869beb88926ecb8475dc1. 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/INA981700080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062cc516c56aa035586d5d82017144097b60d41a7378cf4393af9527b8df7b7e. 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/FR96X1693986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7961c43ae2ca273637e034b3da037c3ec0cc785d36f23e2da231a1566e5311e0. 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/USCA28300132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99efdef7e825d45ccd02950b3525cea361f6b7fe90d2e39b0f6e5e351f9aa870. 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/USEM38400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b915c10c13b40f349b8ffa540f7cbe33f126de098335006a46785faf156c81. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GBAMS8500088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0320ec1c1b7ac2a8878af99a25511e8d2fd303d1a8736d7d89c5b2cf5d675b2. 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/INS320401245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04179a357240e6ebf21236b1c6032070551ee8129d60669fb0184d5d1feb6276. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/QMU9Z1100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02743bf3beeb1b287744351ef79d521301b53e34b22b9440d2a2df121cbf1152. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/INS320200429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b568877d647c9d1e46d8d8ffea81adfddecce4082099bd6c9ed097379436e7. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR59R1708176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26873ad2f7562f4112052eb2c9882d09fd546090eeba503cc5ac86c4f6167e4d. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/INS320300540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b44ff92fe7ae191cee17eca9fbdea5707a1d3bab195c590289b22b99b08f9ec. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:40:34Z), 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/INS320300819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb493e7a64e5f3fce8bc99b52eca8c314d7b23c1668ae61a9577b730e596d0ef1. 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/CAU119917633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bed7cab87226f1406f0a3b119d28daaf7ae088394b6f5d4b3de6a6ffb8761ef. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/INS320300963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69af7b97d885f75ec166af5a52c38f3dff50816af1d93552723c0ced6f442ac6. 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/INS320401173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d565d27c7e3d75a5429363bfedadbe067b647b03d097560be4ba0223bf0cd37. 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/USMC19341229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5f57b49fbe7a18da8721eded7132ea4b0c4561502a2f470e4822244df2e3ad. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-19T23:33:24Z), 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/INS320200466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116f8895d4322a300e55cf05025b8d51b9f807f785d7f837acabe446c50dbc82. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/INS320300541.