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 0x2f4baf7d17ad08f0fff80e6293e887e1f9661480947d72cc9b3e3d4c3c8f5912. 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/22464b66-3b1d-4dce-8441-83ccaadb9885.json and https://artists.proofprofile.net/proofs/artist/22464b66-3b1d-4dce-8441-83ccaadb9885.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 0xaa952d85567f5f2c8e11cc9bbbad3205e5ee7bc3012ada6a7c7079b5ab371b5c. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/TCAFT2115037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe88fdfd409c934cf4c641c820e54b416612fe5026c0db5f2f08557e98977a4. 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/QZK6P2254587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f4c17079b855ddf0643c3210282129be3706318176e4b25ecfe91cf4ce1409. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QZK6J2261609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7118c6dbb4fcc67335bf4423e0c9f10e52801a79c24ca0b5237191975f20f29. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZMEM2246297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cff44bcade2510a86e450a286b02b85cb9aeca0462c9fd102fdb59d515f61a7. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZK6F2211195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b6add7bcee36c1e8ad3963a0a7afee3f606b5c49c3bdb7f60d7929901f2433. 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/QZMEM2249126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e29829de36e83070175f45972c733157ac9a38e6a44e85d98aa6f1b0b26117. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZMEM2249124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e9a0eeec415ff620ff1c0f81354ad085c9550d6381ee8f07d097f8b4620f5e. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:08:29Z), 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/QZK6G2255219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95717e9ad73102b1b66360004844d6c8e6aacd74fda065bc6553b36db1b54587. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZK6F2219367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804131c6f7c3691d554e2f967bcae607d5c7e07bc72c2c217f2814bba5fef977. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZK6F2235638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e238f1e00363239a760f28d6f5eaaff58cddd75417f16be35431d33555537e0. 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/QZK6F2279406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae6990dcdb604d4a405ce211f148621f2de2ca88a85c04bdb36e40f831d2283. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:45:05Z), 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/QZK6F2237364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c20fb12159c1c4f4825ac396077a8ea6c9014a937974132643e6c643bde5a4. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:07:28Z), 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/QZMEM2285880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac1381caa9b249214313dd369da59cd5b7253effcb8c11eb696c086f7c1778b. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZMEM2283574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aba44dd541a062c216f0acc9e7601c772c619f9ec666b538344ee85c7b78e05. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZK6Q2246769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075bcc3807a01809c7e6d9dcbf36bc81bf2980f3eb35fa5aeeb014dea8345c5b. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:03:17Z), 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/QZK6N2256189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf224eebe968095a1a85ffec977f0e5ddaabd2c5755897944de93869d4f949e7b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:11:29Z), 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/QZK6G2241460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2c7c5064fb5a570c4e1c16921bfd50e60bcdab5b740e72c377cd675a6c445e. 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/QZK6F2213896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89bf6156c56c28b4652a5b0fc9bff53462c5a7d8acb063f1328471ae3b7734ff. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZK6F2213898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05fb63dec8a4975f8ae1312addf362a54dd31687a90df8ebd737080251d0182e. 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/QZK6F2219366.