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 0xf1d17509ebc86acc58b2ae963ca6778c0f99ee2a35ffa5bfda1334ae02fa97f1. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dad59583-a92e-4664-b179-2352bb4c2a38.json and https://artists.proofprofile.net/proofs/artist/dad59583-a92e-4664-b179-2352bb4c2a38.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 0x1f6412852270517a9dbf6f7d9a090c8959be685b4afa1acf60c1151836c684a3. 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/QM24S1926707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc51da1793f81fe8460988a82993ab9ac14da07a748f2ab49f4f79bc26e8bc07. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QM24S1927544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f29b833e050404a8107b5d4c2428d057d1a37d347307816f3dca9e7726b50c. 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/QM24S2000118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6724195d823b88730859d10766c82ee80d7e906a281f364a15c2f7a97ca62387. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QM24S2000593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e4e2434ed89fcf6029bee6835e45c09afca92978530e33b47d5350d33b72fa. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QM24S2000693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade2eb354c56027a91228a01dee5426fcc859ec2198876bcb5f0341beea3662c. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QM24S2000695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa49cc66292d9b38b81a00dbece0772620b464f8feeedd281b665d2f64054a2. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QM24S2000696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe642c7410bf10ddffc9103dee055cbe978b78e346fa54edb37cdcd38194a1288. 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/QM24S2007750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ded562918dd7d23dc59e29da8b7d416c7bfe7e889121fbcc7322452e5bbeaa4. 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/QM24S2102365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7d1cec38e41566380279d61d15c51d9bcaebb5f62c96cb15be2adb6cdab9fd. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QM24S2102684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd301f01366ebfc944a9ea05806243c426871b0be36a6ea5e775682786f2f6c3f. 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/QM24S2103019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c117ce6b04a4ccccb7d217c5f6780154890df06115cb1e66561f683bdee037. 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/QM24S2103757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d133e59a64f2643929e2d5a677c17771610c2a8ca6354ed9dfbda43e2a785b. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:05:11Z), 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/QM24S2104753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a22839f601bdee3889c93fefec3cf3bda019ae799fd311c711cf25c10eb8240. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QM24S2104752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce72c0f930289271a4ae7e5e98c107096c8d800b537d6b9182910032b8ea031. 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/QM24S2104750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157bec98380b3f9617f92f32cf990193980c1815fb1f90f961505a480992da53. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QM24S2104749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff102f80498e310b556c5bcaa4448f7bde35087125ff867e3c213e89f842caf. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM24S2103816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7daa0cad814ef21d0580281ae365a57f417ebf2cb98b2291b02b37c9fc2ff4a8. 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/QM24S2107365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6107a5b1d00fcf9461797bbbbace8e89b83941b9f7aa27ec1dcdda254ad09fa9. 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/QM24S2302554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95915761364210b7622b1839be186b4933b9cd7c767aa3b340b2df22bfaf0fdb. 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/QM24S2303968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92df2a87a775aa8595997a07fa88d149830ecfb88629790b008efb49c477fade. 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/QM24S2304773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a7614543817652dadea302e1c590a9860a1fe6d7c82c755aada3c32ffcbdf2. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QM24S2304954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31c1a150804ef2866366be23ceb94f20c60433cb6eabed4cdd876eeb4b848e7. 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/QM24S2304952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f4131b002672985353bba71dd4c97c2b6e0704e5e4894443aa4ddaa196dcb9. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/QM24S2304951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c0b5c91e427b535ef19ae3ae3b34b50c81b77b400a654a37efa7adebccb191. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QM24S2304950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7abf670bf86963ba334a4194ebbb7373fb8e3a1e0127e8d2efe9a9e0dd222b98. 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/QM24S2304949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6aa0b039acc7ca49222b75e5c4c9e39d6a23de280fbca6ae5a0460949961b0. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QM24S2304948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67cda71675dc0ce74958ab3f875184d444c49ec004cef0c317ee78da1e5112f. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:00:15Z), 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/QM24S2304947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e5c201a736938b651aa2835f5e14fdd43594c37e31862e365c865a0418da6b. 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/QM24S2008424.