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 0xf03413d966270698aa725dec5648468fc1c9acac3bff157cae2505029d1b76e9. 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/ea85e95e-606c-4f74-ba87-3f93b2bfb60e.json and https://artists.proofprofile.net/proofs/artist/ea85e95e-606c-4f74-ba87-3f93b2bfb60e.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 0xf2f8c2925c37d8376cd3d69fcbc79d125aee2a6a7eace9c4ab386b8967a0a900. 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/ESA011530592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f48d1c89ac3c593005efcf20f3c28408aa20e775e7c00a76d0b25f064fa22cd. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:00:39Z), 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/ESA011530593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3687290101a098ba7fd3051db22149fddaa3100c05ac935a1ed1c1982716eeb1. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/ESA011530594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3258f7637a973f497042e36a055463fb573d178c5ae94d6c32cdc455d11176. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T23:01:51Z), 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/ESA011530597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57704ceda29c0cf4330df32fd8d4355490129ec215fe1acfc1e19a42c3cb8ccd. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/ESA011530602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a9119fc7e2e586eaa3300f00dab178d5c03abbec8164b01a4f785a3855e240e. 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/ESA011530605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cdec3fae32ebe2d02ada3341f8c0231f03512af8f62a2e3c50527429fd30cc6. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:24:13Z), 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/ESA011530608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115efe6b1305ff4c7dbd3f1376d53394fd5d36ff225fddec12e77d381f7cfae1. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ESA011530609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669e0f9927769614ede676e891d7ec1db656da11e0a7f7217a37337dba8972e8. 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/ESA011530610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083e699367a2bf9187eadfcd37d47dadf0af38b532b3155a32c186c21809dc8c. 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/ESA011530612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4041f3f0c7fdfb8822834d207746a5fa0d3697f7a120a658c1b4b792a53dd3. 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/ESA011530614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8842b54828891b83925a44493826364490c80a95222e52eba2fa3d3125011d5. 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/ESA011530616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b2f9a9471b848b7ee960624e4715b4a207df1c81d00ab0460e23517cdf20eb. 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/ESA011530749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ed07a1db68e26d6c896dbc314d80521f16d16426d106e3e44a3c6c8753cd0a. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/ESA011530750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42dd87b9b912d51a10dd17b327fd44a53b63823681c3119d8ad81d8e910e528c. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/ESA011530754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c765ce00ff8eb351e9348bea0162be7efe94a389c852a14c16bb061573033c0. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ESA011525634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2595d5223ab67feb959c43e939e6fbddf6a1c46fcdcfddf932c9a9969568bb. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/ESA011525643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42117932901d261b2d8b6d9e71068ecf7cd27970f8d7973f4cceac7b2b5b343. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:41:16Z), 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/ESA011525644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa20f3300d5f20f8c0a663cc7203d82b3cd073461347a2d4a813b12d5600d1ee. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:27:03Z), 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/ESA011531029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec2ce564d045952a6e2b29bb18842a9c76cd11df019ef2e11e303953f54f003. 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/ESA011531030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2ccdcbb1d00554a74e52fcdada7c18e818ec5c3b40b70b071979067718d792. 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/ESA011531035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5506e0f16f615de90e917de70c1da3bdfa552152a6fb18b9a5845a6e393aa19b. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZDQH2351155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba19ad33b6d85787f2a87b433b8e9caae2211aa67fc95ec10c33f6b7af3f0c98. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/QZDQH2351159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5d3bb2524c118565386997aaa0858d4ab7f3a965e5524049b17c9383587dba. 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/QZDQH2351166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad181f5337f436e7cf54bf9221803466cae5c51f87d83326a13732d2db8e1fe5. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZDQH2351170.