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 0x2ac718f60567ef536941322b363c50d9517d5257c888088c18036320aa44f222. 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/559d52f7-7af6-4048-abc6-ab495019eb56.json and https://artists.proofprofile.net/proofs/artist/559d52f7-7af6-4048-abc6-ab495019eb56.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 0xf340d5970888e7e301f7ae1c3f210f10d10f679aca8792d4f2b5a6d42ec3fab4. 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/US3DF2099213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d38692e0c39e50c34dd0318fd1658512ec850b8115939b75e012ae7427fa16. 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/US3DF2099223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c0b092c1dd27301cc59682a436e4b087033196c030f60dbea03607b197e1ed. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/US3DF2099259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0193e7eec3a56fc3b318b6bd4c3b99805401cd719b8d28d7eff619327c02be. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/US3DF2105495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe80a08f115fb08f183bf0459cd1060e99c7d6871579398698471fd189741d62. 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/US3DF2105497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe80a08f115fb08f183bf0459cd1060e99c7d6871579398698471fd189741d62. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/US3DF2105497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708358b6e66a4e13ad4bdd24ae79043580f8e8fbe178ce40922146f570452f3e. 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/US3DF2198049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58fb40c3429aa57ea54b26a935cd4f931245cafb2e754650e4fc7c819d5e65ac. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QM3DF2165518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b6752b78f0cdc7020af9177c6f91c44fc3a553e94ef9a8aaa9e6a35cd72a66. 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/US3DF2214765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc5dfeca6d6e34278a6f924be40d5d059cc21585d3c20cc52f3b9f5ceee79b5. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/US3DF2237985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2deef1c6bea86298aee7e47219370c8721b84a0bdc3fc1ec40580ad5e2aa5dcd. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:23:06Z), 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/US3DF2256821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a99889d70b901cd7d2b84a8a1afc755b5452c402b1db14dda44b5b134841d0. 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/USANG2223244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19d77319a725582e9947b3812a9c21f569269bb3b442b9e8ab1864b85bb9217. 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/USANG2236843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2cda341120f2f14c881673b17da3d80f6a531698a732457784b456692cc916. 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/BK17I2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e6c444f5f368999350a90275f9334d67aadaedf37530c76f0b081b802ce8e61. 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/BK17I2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28693aaef2ca52370ba27f0dda0643eccd7dfb590911be53c389b4ef547fe8d9. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/BK17I2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de3dcb3d8edf2434a92aaa0e51e7b93b62d95493a5faec158804b97243c571d. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/BK17I2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495628b91b989b84dcf4f8aefe0e67c2d253bfd32be604f0c0620c73541f3c09. 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/BK17I2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeefa0a3c6ea96a77537730000d5f8feec5e24f33a44fe3795535960c5522cd0. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/BK17I2400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8609e28c37950d8b10f27869fa60fb53b1a127e7b5ec47aac78c0ea9fb6f8699. 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/BK17I2400020.