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 0xcc3b4779ee0f9dda0e93bf9885ad06a282952ee196072feb00cc75e5d02b5e9f. 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/11a547ad-ddf0-49c4-b7b5-ff38f991861e.json and https://artists.proofprofile.net/proofs/artist/11a547ad-ddf0-49c4-b7b5-ff38f991861e.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 0xabc400dbe1d672e1a0ef63455e51cf6eb4b0118d197a1e3d5171a918602fbfc5. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/BCADI2100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5cc144f3edb35c91e456ef3d62d831e563257a8443714843179fdf829bb258. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/BCADI2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c7f07b09bc92fd5317916931bedba8102992b7d403a399b5e08841d637e285. 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/BCADI2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7d9936371f803b667abe8c49d8ec83b77eb8da1fab3a11388f8968df337efb. 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/BCADI2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18501ef6a943bf68f9dcf07561844d91a227eaf6b489bf460b9cdbbc281d68a2. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/BCADI2100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42413a89d6c23a493225183b9fa4692b81452b57e903b67aa17f17ec1deafcf. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/BCADI2100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe106cbec3448944a6c0a969f6f285c987eff0d397e21d7a924e5559beff3035d. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/BCADI2100037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bee91faf11bd9a59f1725bc589ee699c183bb2aa7b548aa5b4e35a0b4b86cd7. 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/BCADI2100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bae0c548971710fa7489fbd053c3762f45ec4cc0214c1c797f573b9dabd4e04. 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/BCADI2100034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef1b28a6b1311e54ce0b7e842691df0e4a42b3d28f12b80b7e0e99f4855e4b2. 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/BCADI2100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353ab402581aea6b8c773a7da934382599ea31168e35da686f54d91556b1cb22. 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/BCADI2100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba293590fe24c30d8618b8133447a253611998d9f1658264d75318fcb816726. 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/BCADI2200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47f5c35f1f5f2083ea38b03938a71359aacc037afe38261bd23340028d0a9d8. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/BCADI2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ae39a666a5eaac5073826dbbe6a5d848ade095ae37c12fcb627194af736876. 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/BCADI2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x529b8d195eab1a5a830531ebe5701f13711d11a363a6d4e16669f219b1e5fec5. 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/BCADI2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3812bdddf03bb957e7992ec2ca057f778f849b8791781e3d6913731488a80015. 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/BCADI2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517eeb96fe2e76095ef18cf7d0a88c6954a3d8e502952a57c3b255f5b3f10c7b. 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/BCADI2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f4d5e84aa97fc48fbdcc93ea853115adbd740610810fd44c3e39bf0fba3ee3. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/BCADI2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e03d8c33fd463981d8ba93c6ad241c2c397a3161445919b2bb7d73b1ac92f05. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:24:22Z), 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/BCADI2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3bb8040bc35c52e29a6b359e1ffe63a1fde5d06bc41cc3c8c3d48f2d02f48ba. 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/BCADI2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09fe380a4d05ff1dfdb84fb5f0a181ff1b0bd5d1bb23452608e60ac24713b9c7. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/BCADI2400009.