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 0x7eb19a11a9485fbc9a0591e80299d83f5dbe7c020d14bad73f31d639c5219144. Chain 2 (Bitcoin): anchored in block 953717 (2026-06-15T01:05:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/86749a16-78cb-49cb-9c68-80e01bc58c43.json and https://artists.proofprofile.net/proofs/artist/86749a16-78cb-49cb-9c68-80e01bc58c43.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 0xd232a98dedf8ddee1fa5ba9c0a204b7e3bfa0df9296e67d1c7dc96a06de1b61d. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/ESA012296767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a971cc816dbf6ee3a181cbc1721f2b0cd8553e73af4a32725b15fd9620bc86a. 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/ESA012296768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5138c17fa8d4919a9539b1237fdd29f3c5fe8b37ddf4517ea2802424c77a209a. 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/ESA012296806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf846f79b6f24541a13cacfee818b8ae15ad95bb730d8912ab8c75f1618a21df6. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:57:52Z), 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/ESA012296807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8935c28caa98fb1442e7ca1c81a0effca959125ac2aa2bfd32b1a8b659cf718d. 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/ESA012296809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176234a39e64584d1143148160375ee8256c5e43301f337b5c9d5089bb766734. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:39:33Z), 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/ESA012296810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2bed2a8ce357a7a4a5f6aa2c65d038a5f16078b4099dc9c67c05b862040dc6d. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/ESA012296811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33636bdea7ea5674c52f31ad502c84e480e8747a5b785ac42e5aa26091e7ef1. 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/ESA012296812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8156eaa2b3a5077279e11e83164546903f57165b75ccfc1a6b36a10b4cd2c55. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/ESA012296813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d4ab52f550f10435c2920f03241dc6fc2328ad90d4bd907fe8491668ba80d0. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/ESA012296814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbacc61209f5661924fce2c9dce6542e48d4b098f22c79ae08f57d0e1f33b94d0. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:40:00Z), 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/ESA012296815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53115a74063ee2d3639a6edc48715ee93a4a6b42a688141808a3b0796bc19093. 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/ZAQVH2500076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0c01b2851b36a138efd67cfbf20bd6f9417d34bcb11c8dd556cbe0c3965800. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/ZAQVH2500077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793b413e8185489db3883aa4578272a310a6a2d0a2a00bd4aa6bedca00b34623. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/ZAQVH2500078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32972d2108ee5b5651bf4755040480b9c27bf4f24fcdcd44ec7c090c93a1a0dc. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:16:17Z), 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/ZAQVH2500079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59eec56ce1dfa4a5fc6e3b0a970cc6da85df4f257b111be5746ea338099e88a. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/ZAQVH2500080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38b65b10c8268f91f505b4813ebc381e3568cf2c4e28e8e7052aa921e2f97c2. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/ZAQVH2500081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93792ef44de4b2498eb2eedf58aafdb1e425754fd8ac350f82d09cb69642c6c1. 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/ZAQVH2500082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87bb347c856760ee4d7c3e583895ad931251be0534a597dca6003cb3399ebe1. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:35:10Z), 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/ZAQVH2500083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5fd5a589f219db9f8dc12fea476efd69f26e57d9a6cb64578fb3c4e8477d043. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:06:32Z), 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/ZAQVH2500084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab53fbee4cb66e1f0104319bb00b00435e28399b5b250f7abe4fa59717056548. 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/ZAQVH2500085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573c6bd02fd68f01b0ccbda8635ea495a94c27a23cf203fd104bae6dcc932ac9. 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/ZAQVH2500087.