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 0x5136f1a31452e9c145c1f45ddc83903eb7a2a53d55407fbb19758baf101a7a69. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7e8e91c0-2b97-4201-9773-c62d7beed3ec.json and https://artists.proofprofile.net/proofs/artist/7e8e91c0-2b97-4201-9773-c62d7beed3ec.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 0xc1d21459888d5e5dc2915798d6791d4eaf38d603e43e33f190ec397b3839e6c3. 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/NL8RL2403283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c63c3edb84484677b2b2142abbed295875b18b6c03d34c9c9557ca4a3a52abe. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/NL8RL2420052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d882e53bc0710f8dd6295f8f4fc1d2174b68e7917dd086e99071c176c16f131. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:27:13Z), 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/NL8RL2429754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6fc9327af1ec4622dfee212ce16fd6686ecd4319bf971f5cf4522c888102d4. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:46:45Z), 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/NL8RL2429755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb92450e3f3ae58e69a1eeccb0135eca22011dc769dae7b986ca0d36ba7704b. 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/NL8RL2429756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e05840ae60d6220dba86c1ef03055e3607ee314a8d6e4a74362b023c411314. 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/NL8RL2429757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8294ed9686eda509c9884c2dbca4f641ae0061569580bc80926da12fd43a5947. 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/NL8RL2429758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a2183e2780497e969c2fee5297cfcf0e558787d2530593acbc961f84ce0567. 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/NL8RL2429759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ceed8637f7756093822e096141084986970c78a29bb7572266f322d104e039f. 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/NL8RL2429762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19fa1e5207db4131109193b811d404fb8ae7b8d891b5014620a5bb844afdc20c. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/NL8RL2429763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f82939bde04abad10edb235eb12badd1df985d77af15e05378db1a078546ba0. 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/NL8RL2429764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1894d8d235bdfb7c63ca07dde23785fe173f0534665f90434de872b854634539. 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/NL8RL2429765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828aad7f6d0299f396fb8abb5a2f04a26d9442eb890b3a924e2040b4a3245ef7. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/NL8RL2435427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace2a3830a556b11380d6da249b9dc28c86b047a8112ad75b9cbc365fb20c2f0. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/NL8RL2446900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f94fc14a5ff07f1a927275646199f606598e379251b4a8f54c594ea1dadaeed. 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/NL8RL2446901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57050eba75e6962ce35dbe001e578e57d6dfd00e4c2c03a593248f469a04f532. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/NL8RL2446902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50d226aff7016cde0dac9c62acf287744886ad98d3b352ea8ebc2ef4a5782e0. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T01:59:29Z), 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/NL8RL2446903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca66a16374964edd36c6744c4cbf5f3f7e49e7da7ecbb425eca3806e1e81b457. 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/NL8RL2446904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0dca0a29cbf462f5add3d130cdb0b6d6442d0d0c83402c8c2096b0d001e35e. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/NL8RL2446905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd6de78ff406f8d184a1b832db7b9b8d04d07a3c4ed73442efd8b7004939e3f. 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/NL8RL2446906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddaa5dbbe2861cec1969dd208dfb0ee8c25f534248617f4657ce0f0ee718df1a. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/NL8RL2446907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479b9226c342e21c32a1f777af6c8108a17f8b38c362bfd6ccad663ca8012228. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:09:22Z), 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/NL8RL2448374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06593b555fcd25e57e4b58f8d69f443aecae70d26d534174c631692f96c6ff31. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:07:29Z), 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/NL8RL2449627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463e831a81ab13c3ea5597b87dc1509d2044718bb226d99ce69f293cce5b37b2. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/NL8RL2449629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806fa4ca62b4d9b693a2ee0c84c4d8052c3a599019cb26dcc8e4965eff5e3af0. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:08:14Z), 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/NL8RL2449628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340dcec5641789076f94f9e773bbc77c694db1516554a6ee9cce1175c894764a. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:38:47Z), 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/NL8RL2458544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7ec55fe2e7f6592fff54a8d274285c9227fc858984a1615198ea7176ac518f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/NL8RL2463274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39597cbc2aac21552478337409f9a8678bd3c07ca94ce52f1cb6ee7479ddb814. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/NL8RL2554600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5601b1162c80d6ef0e427eecac6bc54c4e84043ac18767a35676d9f10b65d86. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/NL8RL2554601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e3fd3052f754c093c548e86efbf9f9055ce83fb061e60ce26271d2bbe342af. 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/NL8RL2554606.