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 0xaf2584480ccc32fcfecb88460d91b68c49fd8279734f4a0d36296e2d1633bead. 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/22f887f6-9031-4a5a-a8d6-26af7d9b905e.json and https://artists.proofprofile.net/proofs/artist/22f887f6-9031-4a5a-a8d6-26af7d9b905e.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 0x90fc651b6a3808af3e31a8eefb7b900ee8fc60bebb7e04b3497e3e7777f251b3. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:48:27Z), 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/TCAJE2572499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79198f624715d0b593d2087f0be27f82ceb601325587a023e9d81db907e4240. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:13:18Z), 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/TCAJE2572508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0307c4446defefaf808d935ba9a79da457aca5d1ed84b3d238cb56174a1155b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:54:03Z), 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/TCAJE2572514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75601d98ed9a47aeb00327e81553b9b24f25d003e8ef1f046a977545ab8402f. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/TCAJE2572523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c0abf79668eaeec50ead321d16d03702c93ed435d3540376ea85d2dcba13fc. 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/TCAJE2572534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf75988bfc0f916cfcb766948503b308bb9dcab59bb2b1ecb92acc2244f9ee28. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:31:38Z), 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/TCAJE2572542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9fcfd773d86a440dc464f34c2107b54e6e5a6ccff239080632e6049f5f5cb4. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:22:06Z), 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/TCAJE2572554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad9ccccec5031ac293024e0c51cfa58d1a89df14d451c0502fc5e53aa40a785. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/TCAJE2572564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92414c383484674b3ac7602f891501d013bc5f06cc6a0fc164236c841b1c6844. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:25:50Z), 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/TCAJE2572575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e1a9d523adb6ddce6a8e0fa695ec2c3e4dcfd2a9b098ea92f2f07374aade3a. 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/TCAJE2572582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4afd04200573c3ea2174913f5002847470deac4cf469028e26da5e23bfa0ca00. 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/TCAJE2572587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2fbebfdf237e50f6ff77ddec9698d5962018fe2674bd84fb225b7ee983d1b2. 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/TCAJE2572592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb226e07789551e748571114d51168c4b3a88a4d3f76f60e1f8101e321db64100. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/TCAJE2572599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8137674e02e884ae2a668a4e8779fef8e16f9e9ada3c29bc3dbfbb291e39a9d8. 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/TCAJH2528379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa08c978221117dd4993013788956ac8824b1458249a73e7aabc7f117fc5e3f8. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:03:46Z), 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/TCAJH2528388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7807b21c6890fbcae9a99f028850ba8cb8263d878ee7c706b5afa0b893475231. 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/TCAJI2528399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ceb9742b5aa193dffe09e37860cb9ffb31efbd55272394e863c410c5a113a3b. 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/TCAJH2528423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e99ba196cf79a803b50f1136550d9428719e30fbaecf28c5fa611528fcb150. 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/TCAJH2528441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d2db5b33e1226b936206450da2ad1d53723a3e5d1f8d2b56cec58ff25dec14. 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/TCAJH2528447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc906a4105f428089dbb4228a7fc038a7c57691b8af261093822e7d3f5b487f1a. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/TCAJH2528491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c6b35216124abba40e5cd093c8c39b491deff90aa27267bdd7f76794085027. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/TCAJH2528501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffb360b67337c7ba76f9cae5ea14f5bd7a43419c6b3599d8e3717781fc99097. 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/TCAJH2528516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7939bb065d3ac1d578af81ecae3f3179fa5d5723d48b7e04b7707ea1763822ba. 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/TCAJH2528524.