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 0x0842d1fc87dbc432f361ac48f8c14854874205494d79e90ab9775e4b684c439d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fe33eba9-1819-44fe-8ac2-873e2f040710.json and https://artists.proofprofile.net/proofs/artist/fe33eba9-1819-44fe-8ac2-873e2f040710.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 0x0ae559e0fbc254e083c49e6608abe6fb3f3c05a5e2814a83b4a6f71bb4f0628b. 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/GBWUL2147488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ef9080e3af03d1881062e6e84c69583ca8cd30d64f72e7b1beaf73dd295333. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/MXF160101255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49a9777360ea70a2bef8decb7b8b3a40ffc665e61a4bd46d7fce60e84453866. Chain 2 (Bitcoin): anchored in block 957611 (2026-07-11T21:33:50Z), 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/MXF160100488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x200a17ad437d2580baf79a85cdc9283764f2d2e27aae32033a301b49f9051bcc. 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/MXF160102038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19daad8a9fa31b0e1b4a975fcc073f19a6f4c4cc62b7d6bef3fcf13071d6e6da. 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/MXF160204820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a7d95a88cb5ec421fa228cfb272383d42460779171b94ec474c08fd19da7ca. 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/MXF160102030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c835df766c4e646e69ce8881d4e58b5f79afad2a0a663881378e20ce085913. 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/MXF160100498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd09d533e8ac78faaf8d726da449dbccbbf43af0cbf565f98ba387d0c73273d5. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:45:07Z), 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/MXF160206117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc1c50fc359297b742f0758d0a5c1ceed09892f3cf572a9e50d228219ea0174. Chain 2 (Bitcoin): anchored in block 957611 (2026-07-11T21:33:50Z), 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/MXF160100492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9c12a6b778a0617a857ac0ca559845731ade0d60f60220111edf683f0fdb10. Chain 2 (Bitcoin): anchored in block 958677 (2026-07-19T05:47:23Z), 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/MXF160206118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547d319393a432258a1452abab1b225441deb8d110011060818f1795e69710ab. 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/MXF160204822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee522e38e08b572bf383857f689c15b5aa01bb5176398557a81eeeba2246ccd. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/MXF160204817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e5a878d573d2658cf602775bda49ea5e8b7a60f3b53033d7f0efae22d64060. 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/MXF160001573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ed7700b0c242c952abdfda39781dc4a411ebc8e5a07c6cda6c5d514546b217. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/MXF160102035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8942e850b013f95d06f96bd973a99c86ed40391499a4bf43041b05a704502d7c. 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/MXF160100496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc1c50fc359297b742f0758d0a5c1ceed09892f3cf572a9e50d228219ea0174. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:19:32Z), 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/MXF160100492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84aa4be3847a0eb7eb6631d4a4b8d5a5208780a9886c5c95b520967f905f8080. 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/MXF160203606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f83e4d09a20852bdce0c141882b5429479aaa520e26463daa4601fcff017f3e. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:35:38Z), 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/MXF160100491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8c87e68a4b053a320445933af5956b53ce4abd0dd7eb18e03a71a1c02c6cf5. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:06:17Z), 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/MXF160204815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd7b34c5a515ea16ea0390ff65ddd61724e65ba59887d3f529ab02481b40212. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/MXF160102036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf181eb1d12852c82782f9cfaea00dac3e3ccf4c84aba748c9a6ac49d471d49e0. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:45:07Z), 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/MXF160001567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09bdb09370ca290b9fcfafe432a7cce498a1f30961d6b7651d854d64afc5bc1b. 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/MXF160100501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91cdf086520e396ffaab30d975572314c9bc75e0e23a1aa5e6969f0b2425415b. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:32:14Z), 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/MXF160206633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e90eeb63feaf77b621e318da87634fe31a78cbb035404157c3643aed06ca85. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/MXF160204813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2aa117a0e9dd2a9268700cf0836b377f41419c4af3b8c961916b80207cf24b1. 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/MXF160001574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf181eb1d12852c82782f9cfaea00dac3e3ccf4c84aba748c9a6ac49d471d49e0. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/MXF160001567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebad2dcd2508077f37b8840347f25a51004692ef9fb1c094af5d39d7b4d22975. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:54:37Z), 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/MXF160001570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a08b8f69f8e8d85d170933a978e76f655b0db70e45ca05fef7228a637859c1. 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/MXF160102041.