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 0x65c4b9f847847d98387a33a184c173be912b8422ec5720d0f41c35feeec48071. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6013899a-9593-4f24-a38b-0afbd1bd8915.json and https://artists.proofprofile.net/proofs/artist/6013899a-9593-4f24-a38b-0afbd1bd8915.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x3a7d96aaec9ab3c985f92fd1077aab399c0358e08d5e8384d8fcc97d21923790. 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/DEH741311398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905b66052fdeb488b7916375c20694576a19968e9fa8994ec93550ae8188dbb5. 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/DEAR41916367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87294b63544eb4d51b4d5d5601a4b5354dc7a219de08160fdcebf64d8d961304. 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/DEAR41947756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43af81d9dea16fc6a77ab08048e9041178ca3277a6ec91767d52bff18ce0aace. 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/DEAR41941259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742eccc4daa4cc0b77d39dff196c7a334421e3a712d1c34025b80c7203239dd4. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/DEAR41963623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208803eb8a48d5f4f9b1a3925bea743ad2da827572721c3b1c65817644c696e4. 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/DEAR42072417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617a668412cffa0038fef2c96ca210b9ced0e9e0ad0ec17078ba29b1162c543d. 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/DEAR42056264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfcff1bf5d1d30b8cfd4996fcc11d64710a43ab466e72a30c055bfc5fb2f4511. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T16:01:22Z), 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/DEAR42055687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036b8541141ff6217c60dbd1255f34097c03f50cb8bf13ca0241d286b9fe9f7d. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/DEAR42082845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08295f4e5a60378074782297ea64e3eeca7365eb3f8f968cdc65d0cb0ea7598. 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/DEAR42016230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd3e55f912d9fe856e730655a358a6c44d07e2d58f8199c4660e4f5b4071be0. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:05:25Z), 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/DEAR42016215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80401643d5b173c4abf26d9f539cab2afc53a696b1663f3ec8c337eb0ff6d4be. 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/DEAR42086418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcabb27ac41cddf6b9e8af9f712e450d0c7bde1339ab03823fe74295ae0889db9. 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/DEAR42015694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3054abfbcac92838f23365346caa0f77a3ecc33780e06f0905266c9d008e3cd. 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/DEAR42183885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3054abfbcac92838f23365346caa0f77a3ecc33780e06f0905266c9d008e3cd. 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/DEAR42183885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39d778d05fba1e696f7bc5c7bc64729af59d888676a146a92401c74038d6fa5. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/DEAR42222773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46800a502e056cb153384c39643884daec412a20869eb7acfd12c4b4f6872e7. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEAR42183478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb767778d9863deef5424070e725fe9594277bd1787b696e0e96268c68a0bbdb1. 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/DEAR42137053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04a8cad54cb3b55e0b95bdd03d8405c8c8fe07c12ed97f1bd60aca431a2afb3. 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/DEAR42249768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7eb51681c7ae2e03b9c11ce9f567d52dcee4079506a7d6b3d733b4ba71a603. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:33:36Z), 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/DEAR42397734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92b0debea04ffbf914364dda1cf10ea01b08aadbbbf062323e275fa7b0bcf9d. 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/DE1JN2353314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb46926f5f8596a5b333a7ed44e5d671e37bf55dc29170b3dc837d8fbbf52f78. 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/DEAR42497713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d3129ced020268f53e47c88f331695c3a2987cdbacd6867e81da16ddb826f8. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T19:00:55Z), 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/DEAR42497709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d63c837b62be63550bf5759c0ea5cbb7c392bcaef6c45da782960e153918b3. 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/DEAR42487835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e73c0ae4d05ec6b0fb5c85abbb8462eee329365257907ceba0d68dbf47bd8eb. 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/DEAR42478623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbcd9d5a2889c5bde22b0f010a5ded1f8ac7340150cc239b3db1659e0b045487. 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/DEAR42478861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b5db7d05ba2ce5292991904e7530661a06170223fdd8c80989c023548e576b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DEAR42458607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e409d69679aa41dcf21bf305f8f53cf0d5542cd539213e7baa76be492e808e. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:27:43Z), 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/DEAR42435236.