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 0xb1c97cfabe9967bf39916415c26d357e947e23264cfd85572a7a38fa86f89b6a. 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/cedf49b7-b227-49d0-9526-ef8c64b8688e.json and https://artists.proofprofile.net/proofs/artist/cedf49b7-b227-49d0-9526-ef8c64b8688e.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 0xea7457667af0dee63507a4539501806ef854ba21dce5b865dde20f8e1c2143de. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BXII81500317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a2d5e885c166dfe78d82b73128c87a0f28bfaa897638b489bcf344620ab114. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/BXII81500319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea6b77f0ebdee0c4c00ddcd14022fe7b2cd9e8841e3b60146755df1347d7258. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BXII81500320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9315be4046b70be8f328585c5930f2076b36c90cdacea6f962b253aa189365a5. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/BXELW2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62490142e5df0ea9608725fb5ac111e47ed4b27834fd7e32662beb636f1abab. 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/BXELW2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8429703a21867da7413dc45372f20a9454323e17d08a6ca77256f0b9227de9f0. 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/BXELW2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611634317ed7da0c3fbf64e2d999f2bbae433ade6ff45fd7dc69f5a97f570057. 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/BXELW2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317288c0e337eb8a3205179085e69ef30a6ec0a65c945155d37f4eab7ea45b3c. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/BRC261100078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0031c8a2445a5d9250d6ef8bca62793373ec9b829eaadd71d8e4bca14219c3c0. 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/BXELW1800022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56f8c0121b684ebc4d79db56a17bfc4ea8a9687f617ba9e853628522d6c0f88. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/BXELW1800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab4ee3413fc1dfcab95702ab0c777b564e5909b57074843d2e6633610acb350. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/BXELW2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75998fc68638f0ecd609ff2b97f718b170f4a76b2a242527397b0c75aed41300. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:37:01Z), 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/BXELW2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1922fccfcd57e1837479e7e54f4d5c84489ed0e53c4024a452bbafb4ff043b. 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/BXELW2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd7d8dc62c18f9ccf87a1d58c61e12043f071839065708ff1981609c93618f9. 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/BRC261100067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba85ea0bca9eee903cbd5207101981a4917d3d8fdac684fbd1b5321b44b124b6. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/BXELW2000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9213031d9c17f86aad13fdf9790d0ceedce6522b4e7da0d4b02f5fb673de607. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BXELW2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5509999ec207d30eab79f62c91ad1c6727a18fcc4bff16cff9f0e74a83922a09. 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/BXELW1800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a824c26ca82504a2fcb7cb83ebc63b3dbbf5b43219615ba70efc23ca4af40f5. 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/BXELW2300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4d20b091dc17ae82cbb5e134e6b864d36002ac6efba54d3602a312e7bd19e2. 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/BXELW2300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09db3cf26dc0dcc4d333eea1b9954b0b1969ed2f57c2274a9f69beaab590da94. 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/BXELW2300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820609997f3b3929ea2ed32a6ccc2ef989ff3c6735e0fdfb454ac037a722498b. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/BRDIU0300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc573aea43dc821835050d57ad36fcdd81459bc09be34d7bf281ac04b268a326. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/BRDIU0300062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0feafd287fe235e94519384d465ea2bc167128cf55579007d8b06c23261c77e. 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/BRDIU0300058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09215b3e578fb91f86b8f31ffb2dcd2e54a6e2ed84df7e8315f1eccf6cfeee5. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/BRDIU0300063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf46ffd4daf5565f7f7b7ce22b9806e53669d054e17f04d09a337fb9ba9d660e. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/BXII81500310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d0b25b8ea1f4041aab3ffe5b3663dd48959908afee1e6de2fb8ff77249e92b. 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/BXELW2200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd78354ba2a8f66ad6f2a33a62dbe4427aaae382df4dbc66fd92dabc479790a6. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/BXELW2200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35a9927d23a97040294214564acd004a65880b10c8410fc80b79769671a4a03. 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/BXELW2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a7304b69dbcecd3b5d4107e77e0d16ed22045c3e7cdcb02b97d394c8c4e580f. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/BXELW2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5efbf4fefc6c1c4d177b23f4cf39f76dbefd4d22cf00feb5882bf13aa69bacd. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:16:15Z), 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/BXELW2300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd045612438f7368f7d8acf53a5b73b99dd35a1b32c37a0d8b4b58a91e1333007. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BXELW2300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4322f9923c635d2483f5a852598477ea3dd416e88f95674bd1d34ba39a13056b. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/BXELW2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6600a4e6224379f6ecd1d5469779972f12e4da5d5c5374badc4280fb476511. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/BXELW2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98b08c2558eeaf7a3662ca7f6f15fad5499ca7641265c9956514d07727e4161. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/BXELW2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa779aa3b1a4a8ddc2a41059f8213f37e5311fc12bdcc5e8cef26e9d9201fd71c. 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/BXELW2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1035fa0d8cd722f1168134360b2df3932f45b46a86584435f4279f800e8e2352. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:42:45Z), 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/BXELW2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd880822d03a316b2b840e6616dc208727edea17a285255211b10a32cd42a2c2. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/BXELW2400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06508d7330d41dc7f8516192b31a109540957f21623d4889f3c052d162a530f0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BXELW2400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995e0dfce37354233d61500a1e8f5e1957de8a8dce0fee25d88f4784c0be90fa. 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/BXELW2400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef7fe630be8e980cfa6838ae2db752a6e19061e05afcc0a269526d864cfb50c. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/BXELW2400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd176afda0ccf461a038d3845a4ca6b76e6312074d9005260f0d06939e3e970bc. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:56:32Z), 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/BXELW2400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d4d641f954b790b5b78d66f06de0c76f65ca50830ea5e97acaf0eb5b7012a0. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:38:01Z), 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/BXELW2500002.