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 0x6e6213710608367eb6fef5399322f2020cd61479147b74e6d7978cb729f6b767. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c214499d-a7b6-4aa4-86fe-ec00a594150e.json and https://artists.proofprofile.net/proofs/artist/c214499d-a7b6-4aa4-86fe-ec00a594150e.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 0xfe18c2f7cd9159e30d5ada644a522a383799ebee478c08c62ed1cf47e84a0554. 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/GX3Q92485205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc779d058200827f8466a685be947899cea4b3caf752ad10fae9a5f4bc440f411. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GX3Q92485208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06f7d3b8f066d65300b24d14c5aa3996c8811fae1c480a76fa6452e7c70ac7a. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/GX3Q92485206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe582701f73d5aee6c34225d3731bed0cbee17a07c7f6e3c3d9513d9fceb96621. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/GX3Q92485207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85b4ac5048e1526b885e962808fb95c9d2edd919ccc703d9dabbae1d619a0d1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UKXN22395058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f3e630daeca7180dcb254c23940721c0979d91c3c70f8093fca9a61148a95f. 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/GBLFP2463445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975764165c47e19f67334d43c47addcd602dfe61c757126c2182672e8025288d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GX3Q92393299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe376a90bf79a0895a82ea2bbe560a034b646bfe4f5d62e7ed1b1c58d7510d34f. 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/TCAGP2226948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f228d5589a38286d41897529044ccc57c8914852f11caa461f70671ba8b68ab. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZTPX2298890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1e0f380f799ccde9db06debc4a1935c7539044d89d92b8ea410093f59a2d7f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US7VG2352454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bac02fb93aec93814947dfe32a453d169e905dc11318fabe9e1afb67d6602ac. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZGLM2294581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84577755c2a9f8dd8550543435f515fc599207f71e803b645521f737892854c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZZEB2417578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1297ed2e6811df96e7e323b7805d6a618edfe4e0363a941b522491f879143d49. 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/QZZEB2417592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ee2c7077c47f3af229694a60a7894de0ed0f9b43972e77e85ed2d6698bfc79. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZZEB2417610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66288d7d8d2a05ca76ee7f84805abb8abaf114d14b7f354f719bc5f56ae74178. 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/QZZEB2417659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ef84344ad60895046907cd24acb8a04be470656078230b90ff215b2b93005b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZZEB2417669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2597dccf951e4bea4a5b89ad17b2ebafd78126d55bb4cd14f16ef3c2ff1e5b5. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZW9L2285156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bfa528d0f4cadc509579cdbdbffdac618dcc1e1cd972168fb2c9e1085936fa5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZW9L2285158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2db0719977cbcecce23d2efbbc45cf7ccd2e4107e5b47be7c3e5ce0fb684717. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZW9L2285157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025af329b036dd2ee2ed6f3be308bc16563a71cca4640c1dda111bef5dbf0d8f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZGLM2475690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf473a3efabadc447f2285dcc870a54b90526978ef6a76287db0751e8fbc50b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZGLM2475706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff1a7c551b418a73609bb1b12a1ad04ec775d290eae41d707a63c25735328f5. 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/BX4IU2504509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d351683b1291192850cc3ecfc7e6777044f6a32a03435fd321e9139e28e882. 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/BX4IU2504510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d2fce2f901aba8c55190cc4e49458b47556434a22801f5001b9cfba946b4b1. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-21T16:26:02Z), 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/BX4IU2504511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2432476c0672b853749fb23f02460e462e4f4114263ef6bc298e32efc989ba08. 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/QZTV32565935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6c88591c592faa0620cb9e5ec1db17c2826a9c98e4f65817795ccd50487da2. 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/BXRK32500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3a3d0879adbc0a1a1ab2d9d3b7b587ea025abab32a606c392d4e2e9b4f06b7. 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/BXRK32400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2dce2dd678ea658df8e07bfa7aacb32eb4333490080e89521e78a2eb4e47db. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BXRK32400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ce130b059697d4fa37d45e192b09f922986e044ec37c1309ce0afe7f145a3a. 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/BXRK32400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd7b6bfd6d068b77c944404d778e7eb90fc5b53c311cbe2b850e33bcbdc7923. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHZ42229749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef1b661ff6076f552e849e615de2867003b99944817a612851aca132a57a0b4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BX4IU2501804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71b522c1a925279b1723c1b24f29ecf7e1c637339524fa8299805d7f8e903c0. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BX4IU2501806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa024b3c75ee93e808080852feaae8f6c4c7f2a0c8c1286d164486d984dc3177. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/BX4IU2501799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b80a6a0ed7fad86d48b636b9b8935a5cee201360ce845c1159ad42d5dac9af7. 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/QZNJZ2529628.