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 0xf35300e4f1413dce030477f0cba71573475e0ecdd4e349be3495f24dbb9be3f6. 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/e139ea81-2b1b-4cdd-aae7-d72c0e55fddb.json and https://artists.proofprofile.net/proofs/artist/e139ea81-2b1b-4cdd-aae7-d72c0e55fddb.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 0x7c724efc085bf0397803e6e432af809892b0032d53ad38c845a3d5346c435413. 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/TCAFD2058798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3eaf237ac503da9dec99da96f1185f426285008a6e5f0150ee821463bcdbb37. 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/TCAFD2058804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a475dfbc56b862fb9c98d91e67c43587f06d801e909fc01a0ec61a887a8dcdc. 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/TCAFD2058805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2f4451131478754cc45048cdbae66e7c21852fe432be95578b7be284bf1f66. 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/TCAFD2058807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168aa9c3026e0cda09ba3a90aeccbadf7341bfd004692705b39feb49e62a0c70. 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/TCAFD2058810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42741a3a5568980dd2bac782bfe57d765c200550e397f066e161e3812582b367. 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/TCAFD2058813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8790ca75826bc24f8a4606c47be0f388c5f58db12e82948ff13f2ce39c00e257. 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/TCAFD2058816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66fcb9874dde875fbe31330cf88e560437bbcbea6c9b69ea8d4ce01d7f610e76. 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/TCAFD2058819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17f582e31fedbc0a82f5583f1d6d081ea00ad47a5954dcbbc53b50036a0d455. 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/TCAFD2058823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16173e1d1d687d6d380c82fb7b671c6855481a2bc3c6b363437b7b9fdcd06eff. 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/TCAFD2058824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fdeb97a3d2fc1f6b5fe79c4e25ba7abdaf205a3f902fb6e17e7b2f70ad34bb0. 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/TCAFD2058825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a62c373168b9a1a46624cff0de51dbdaf11a9da10214b2392b1fe4659f8329c. 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/TCAFD2058827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1301a10c0268309d37d5ec82a29207ccd039c604c7629bae7d3f00fd258e4b50. 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/TCAFB2097875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc923054c877ee81d8e00d8bf1346b99368f73cf6086c5830da8382fc48699e97. 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/TCAFB2097877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59cb5a398528f0ae431110e5a11886f1ed683a07dce9057db7ad3c34914d7492. 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/TCAFB2097879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57b10aac65d284d6cb230cfa8ee0a81c30baf51a232efe340a7027bf809de3f. 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/TCAFB2097880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85810cae2d98449a8447a38529d25e037bf15b2ca60e83935367fff691723b1a. 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/TCAFB2097882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5cdbed45b7d3526a26839cd64cea8c82e1fbf40e5dbb4ceb19fa0033bdc880. 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/TCAFB2097885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8fe92514d2212e04ca01e1bea505a913fadb74e63ae2d210487d42626b1533. 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/TCAFB2097886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56b6d9da8b8111368bddbedb5ea4aef3dea732b742b580a95c90a633d0cab82. 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/TCAFB2097888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x053a8306145d80c3edbccd2c86f8efd5da3e33e936357246cfa3728e58ecd6cc. 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/TCAFB2097890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a57c787b81b7e505a2e53a9b704eedc1b6de87eb5224ea4f917277e26153a06. 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/TCAFB2097891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60b51ccbb5105b6e8b99a6cac084da7f0d1c9425de6b8533532a1e8648e7e47. 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/TCAFB2097892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed8f695ba7e2451f8c1b2ae6a09f83c9e5bceb100c146479710bca86829f4fe. 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/TCAFB2097893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61461b887a4937945528dd9ec21a20ae53eb411f6ed6ff8180442222a7182660. 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/TCAET2070866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf887187e3edcbd3121cbafcac76fee2eafb31168e2e54e49f6217fcf65224f46. 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/TCAET2070868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3880d837e9bdd2ff8053749e88c020bf7dafcb677d8e5f99fc71df00c2c2ea8f. 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/TCAET2070872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2148d77a4a3a43b8d3c3cb7bcd1b4a63b86a4d8d9c09f301bc8e6691e013a51d. 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/TCAET2071083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380c9a69621a69a7dc0d774fee3f33d85e12651ba51ef33347d07cdde7a93c38. 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/TCAET2071088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9644116f423a3e862c7d7c29afc09de9a7000b3fba3a6c8daba09ead06cad32. 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/TCAET2071090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b69c28dcec43b9d6e2bd4b17e266ce875ba759151e1b6e97eac54b92894e974. 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/TCAET2071094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc93092ebfd29673a1af7381cd24e38cb039f0ddd572388931d18430a2aab8b9. 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/TCAET2071100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3feda458875ae9c0202e1bd8322d3a838808b5c68d626467404da037066a4c36. 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/TCAET2071103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f78f9854ba24929089cb592d707615135c9e80d03e804eeeb49b0788a64a2c. 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/TCAET2071106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7fe7c11209a02ff04de9304a71ff31610244e2cf5e03b045fbb1be852a8a23. 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/TCAET2071107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67fce72687a91d0d874b531f52cee89207007e9646b317b4a70c5202be40a0ff. 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/TCAET2071111.