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 0x0211964872f4ffdd68892f69947c40b9755cbf0bfac7488a21e33ea54568e9e4. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7d8b9eaf-10f2-401b-9456-dcff2ed493a9.json and https://artists.proofprofile.net/proofs/artist/7d8b9eaf-10f2-401b-9456-dcff2ed493a9.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 0x8fab11165271e2dfe9c0ef9d2505eab1888d055d0add2862c9220c63cbb3989a. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZWFF2558926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267ff50e0c8264a136c0e8afcabb005ba19242002c343860f520c9f537a19385. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZWFK2580297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da71aa55ca78fb9e52314cb9c19aa58e4ae67328256408e18e18dd0ef20ad0f. 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/QZWFK2580298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ec5f988efa1c56ba079c6000ac08b9fc1309cc1ad8d7629f230a9da46be2cd. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:41:23Z), 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/QZWFK2580299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51f00821e27c96ba667bbae93eabaf8ac50675b15e4cec5295e8332be67661b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZWFK2580300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7bc9b1a09de1bd65207e5c665a0a29ede25b605baabdcfcbc5e1ca06fe61e5a. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZWFK2580301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d1c801bc0f0a42b6a509c6b5c00a5455b4f257a546d0866c3e97c002991ede. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZWFK2580302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12f5cb1494e32cd1446c962ac8389cd034826509cc381aa7370bae2c6869c02. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZWFK2580303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ecd0ffbe4ef9862c4a8507f2eed36c75f6ba999ee3406a46fc48f23a8f99ab8. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZWFK2580304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632c1ce81437e4e1e5c21218db902bde954a5e05706239aafd675b3b2c54e629. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZWFK2580305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55dc0fb710ba5f37f617e91468dc50fb6d2547c4f0ef8fa853aa4448f806f78e. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZWFK2580306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea71765ca0c6fd28598bca2ce5f838a2f12ad31490b1fb0bcf77d862ccc8fcf5. 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/QZWFK2580307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad5c48ab325f4996ee2cf248efe0540f128fbdd15793fc05c2caf90260bcc57. 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/QZWFK2580308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9c8a3d7a9494663c9a532f21c87b86df4d41dbd779948d8f68b1209a8c4e29. 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/QZWFK2580309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbf057490a3c6b8ada4ba1ffa090b7727b78170ff757745f90e687411f27963. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/QZWFK2580310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c5459d3b1d191a5befb12e44147d9406f4dfab1538236f43c9dc886f590d44. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZWFK2580311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96e72019ed21d89dc6566ed82a7d0f524e8ff368299ec352900d3eae6fbb54d. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:38:40Z), 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/QZWFM2589901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7869a928436c898cda220da250cb465c44fecdbe6c2da6fbae4b8d1e631637. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZWFM2589902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b232222ce0e1db95859ff4603dc0a027106a387c5d16a3b88754cfa56708d97. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:26:11Z), 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/QZWFM2589903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de574a88927abd942b4bb53e869ece80ecd9b10502cea77aa4b531ca4e8c288. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZWFM2589904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09f48900e3fa3f6e5527812d1833695ec522a4d7d9f2f089f420a524365031f. 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/QZWFM2589905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9897c4bba662651d12744e51fd17c0159775002b2368431f2901e3c46b11d2. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZWFM2589906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e40c22156de78bc55e2b43ab0fc288c058270f1dcbf76d2d218db9e93271bb. 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/QZWFM2589907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87513f9d015aa9c34790782eb172a6e5c5e4b88108b2955174d1d842cca88f97. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:16:50Z), 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/QZWFM2589908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b90e9b786b19f94b78e5e4969061e43b7cf281d59d9e31aa9767f8c3f2ae81. 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/QZWFM2589909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78b5111da07ec8ce1eb554c2ecba1286f51decc0062acb9f2db7986d3e4f25c. 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/QZWFM2589910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa76c17719b3f0ddd665b0484165a808da6b01a90d665213b0998609de2ab4de. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZWFM2589911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760156612e07599d22c3483b187356d6ac7ce1bf1287633f56bb434fb3f79069. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZWFM2589912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa552db5f4dfb2e2640741b3a92decd88279804ebec0b59ab2fdba59355e68f48. 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/QZWFM2589913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b20ccbe671790de35db9311944454f638c9189b1c7bad27a196347f2a3e070. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:50:13Z), 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/QZWFM2589914.