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 0x274ceefaa33df133a9be08274573e2d03794651922fcbab84b40101e3dfa5b9b. 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/935b414c-4f27-4fab-b1da-6ac888505db8.json and https://artists.proofprofile.net/proofs/artist/935b414c-4f27-4fab-b1da-6ac888505db8.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 0x1cf5fbe2f87cd89762c34d96dcdc2a239012198b4ae413562520f00162d74968. 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/DKADG2300738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6f6018789b0fc3f304117f482478da598f133833c1834cb01cc558c49c7dbf. 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/DKADG2100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f14419112b26d4bba67f3291881e32365555a7eb432700084960406ce9d515. 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/DKUM72300372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e31b8d4dfb26e2ffb801fafe6de043ccf9f8d43bdd5f3565e1565daf472c4b. 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/DKUM72300373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e3f1a8fcfa0e59a6ef5b4620e13b0fd8e3c248d0d5bce42b77f701ff0cbfc0. 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/DKUM72300374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72587b8e8258623c770aef2af2f422ea8eacbea402bb85e48dbaf25027e7b83c. 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/DKUM72300296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5920f661e3df3323188a005d5503a12511333404b3d1dbb595f5c74bd874ae. 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/DKUM72200436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0039bf3b03a51a55d7d32d5ac4bb672b239dabc0cc58c4ddde08d5022622d545. 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/DKUM72200313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07307bedff46f11e040d7d355080dccbd702899db84f158ef7233e53f5acaf42. 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/DKUM72300116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0322e1a42f60f7a6a1cf227d55a8fb94afd9747165d4470b4b3b0047c0d96c7f. 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/DKUM72300375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab67d0e68f1f6f4eee3ab117711493c19b2c0db4ff93ed3ff794448fd7fbe041. 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/DKUM72300376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9319fcc3c515e43faa7729fac4a265a75b7b786b806adb73d388b385405cd35a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKUM72300377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c01e123e05cd6ec9b0d471ecc59ab2ef4b6b16f0b285567bc32045e913aef0e. 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/DKADG2100429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9784fd743ba61112eb517ceafeb9d48a5f028e486f9a70937a24bfba61091cae. 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/DKADG1900295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea72d95b133cfb3800c5135e15f96f5bc53742191509abf1e43463fb2beed10. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKADG1800447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925098d63d2035da4a4bf7091aad5dbf90a79e69df2830ac74a3dd7b084e2d5d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKADG2300333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe010953a55d8ec71222ac465eac97f40f16801fbe701174b5c6b35be5d9fa646. 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/DKADG2000726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9981da15a1e5bb37b00cb55c3c86f90986e35314b412d818cd104f3fc6343db1. 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/DKADG2100167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c5d16f8201e92ec686ffbdb01f1fb3f227222746cd1f5bd59dca145f310801. 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/DKADG2100168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe010953a55d8ec71222ac465eac97f40f16801fbe701174b5c6b35be5d9fa646. 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/DKADG2000726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebacb014c303a20144aa15276831c6a34d9e4bce12fde3959ed9626eaf77c820. 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/DKADG2100169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc221d9b3451f83803382f1980e95b1a32667a4016e6f0de9470da2e78c23abb4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DKADG2000992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6f6018789b0fc3f304117f482478da598f133833c1834cb01cc558c49c7dbf. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DKADG2100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378846257aa8a24cbd9f5ac2642696f1520603e9fd42a63f753d08130410539e. 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/DKADG2100171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d3dbc70ffc505e464803193bdf9270afa9f3dba6dc59318223c896650a41a5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKAZA2400083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b780fb3ef362c1bfb596bdc07c07b22c8a090ca979d1964d251932ef182384. 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/DKADG2400462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58b986dbaac25e20e4aefcb4b2a5579df1d49eae9bf3114cbf09904159a1977. 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/DKADG2300560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b196846462b85e07e094fb3d479f6ca490fab276ebeba0f8aa7d0614f5721c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKADG2200036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc221d9b3451f83803382f1980e95b1a32667a4016e6f0de9470da2e78c23abb4. 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/DKADG2000992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64583e53d048ea9ce50cc0d08bb08c986241cbc5317ce19105bfe1bf224f2dd. 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/DKADG2000110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26deb3d58a6bebe092882a9023bd06ff01fb62c9632f7ae0f6248a3cbdad7724. 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/DKADG2000077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bdf34a20e65e53511e85f993ac48355a310408b61d440883d3736d4bde926f6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKADG1900210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ef3172e46f0f31bcbdd25b358adee93130a21c839c3402918277ce1bbb96ab. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DKADG1800284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef2b4b3f35e7143e80145132fc7ef4124366c9035ed6fda9015f1968cea0cbae. 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/DKADG1800070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59962f797f57f731ae0d391553e3d4b8df4487612067fc333164e582b86ea493. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DKADG1700571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8459b024ee7d5868036d757b057e365ad2ff2c9d76f47184a14470f5374a1955. 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/DKADG1700380.