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 0x6707f89cf1df450a6cf73c28a82ecf4a08fa6f9d777856e662f150c27b48e317. 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/4e644fc6-d695-4086-be83-76b5011741f1.json and https://artists.proofprofile.net/proofs/artist/4e644fc6-d695-4086-be83-76b5011741f1.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 0xd0a1b208d535ed1b9f507ef2cae24bff2617dde6f7d1bd3a4f85d3b62277f35b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GXBDS2436596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39960b96dd0b8867485c4bb02d8a35826e33d6b14e4497dab5e6284be035aec. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:07:39Z), 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/GXBDS2484164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5652bc49e9a0d2bce363795deb88ec41cccef57872f438c481f5ed719010ec60. 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/GXBDS2426083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60af50fb12b63768362a228c85326b97b2d14a8b4471a298040b4e7d1b978e7. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GXBDS2407997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b413f2c0657664439a9054f22bf30c949c6b5ef8868bca34204071d9a56041a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GXBDS2441155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf779bfcb827bef6f254fbb1210061c642029f1e7492a54ab787634d895864da7. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/GXBDS2447972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac5fd71b6db97c58091a75a85eac938187ffb71cca6d4aab1e7c6247128cac9. 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/GXBDS2450842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd714c78ca4d4ba5c6d13608db05da626f77bbd18df80f581f5b27bcf6754a1c1. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GXBDS2467356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01f7368f39094dee7021f6af373d5e113f2c02b96b70d183459c681ba6b34e0. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GXBDS2404626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae314981c54d36220b1567f9431c55787f16172728df2cb9a7632c76a04d903. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/GXBDS2446017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90cdb7610e10fe4f2493e3242bd8e6fc9dfbf13d17c8d14757e36241ca0f6a1. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GX8LE2573540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d98de2068855dcb69a66a0dd76a1218c74a9c5efb0619048a5776ea8d92ff7b. 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/GX8LE2583420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f09b5e28056432b4ff6bf151962f10488253f23da1096c692145823b010260. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:58:45Z), 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/GX8LE2572866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37cfa2d02a8d3e7d136aabae74e26ef86dd3149a889bce3894bb492dd1e34c62. 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/GX8LE2548558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac121ee27fe25d73a632955659fb6a380134f9b27a671c076684a1fcde3863d6. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/GX8LE2598478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b43496a23c109a1c7384336be738439f6d6a9baf5e449fef55d3ca27a87b5c. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/GX8LE2506847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256dcd969f577bb9caa9e187ceb7cab45c55cc793d3bd943b556da7e3078feff. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:11:12Z), 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/GX8LE2569665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9bdeb3a89785ba5627d4ef83a1465b187d557ea5540ee02672b7fc79df62ff. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/GX8LE2572054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53871cda2bb629553dd75959976862cc3775461eb320c4c43670ede937a793bf. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:20:55Z), 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/GX8LE2577087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c68dc85098e804366ad881f0f73304ebb7ea31e30e149d702c341d8acbaa5a1. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/GX8LE2532595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8908464f1495bd7a5730476c83b2b71574afa5ec3ddfb917d7f0a825fc341c8. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GX8LE2595981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b772802372497a6bde925b2a068969e1facb5340065474e214ee887148a2287. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GXBDT2522662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a9e4c2bf39bb40f5e2f216d067ed9f2f11eceb0109ce3a50d8989232f64391. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GXBDT2573085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef2ff0c76690811b039801b64829af3a7f304e76c2a31b64187ba3c7fc99eff5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GXBDT2524169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b1f33953b348c3fa3715fe1bd45decfb45831968a88fdedd3290f88ff0a919. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GXBDT2519824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f2534c874f962554c41c68755bf515d06ff83bd4e7455d655735d07095babb. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GXBDT2579585.