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 0x4ed0675b988b14b8b203d65a2930665bc2cae6084c71fd816674f74a0e8bb102. 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/134fa439-bc37-41e1-b8e9-90c16944d4db.json and https://artists.proofprofile.net/proofs/artist/134fa439-bc37-41e1-b8e9-90c16944d4db.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 0x041ebc1cba45d1d3e044d2ff03f88a47e41ebb206e33cf80657faf0e4a5067fe. 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/ITD130400374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d32aa08be73bc584324a52f8cdd97a85baf9645dbdb63c5c27868809d0dc25. 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/ITD130500509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb5e658968091f4a5e4b5cf44aaa6cbb7d6e8f97a6b15115b53cb922102dc0f. 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/ITD130500489.
All for Love (E-Z Rollers Remix) / What I Dream
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bccaa70c78a37b1a504c421f780ebc1ce40e51db33a7f5a55da2d1aef5159a7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ITD130700644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804222430666f8047b267010f6991c6c8d3e92fbed3bb92f56f8b1c410e8b727. 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/ITD130600595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef48237c8f0c3ac4523dc973cf72a29067907a9545082916f8178d3ef68b64d. 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/ITD130900756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f84f160a72ee7e38a72b91dba7bea26e7aed8e14ef31fc6aa9dc9fa75f926d8. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/ITD131200887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20c2a21abf620ce132a42711d0f7bd42c84086d38102590afb3530a510717b4. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ITD131200888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737ff50ce580c55d0db89fdca64e251d4737e062e6287db6807fb73a857aa169. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:26:03Z), 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/ITD131600060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f7505265888dc5426a91ca3e28765ae98d72795fe1887240bd20f0cfde1c6f. 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/ITD131700239.
Twisted world (The Viper Mashup mix -Traxtorm Legends Rebuild)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe253d430f85e33f0e502aa62c3060e6a65de5f5896df6eceef38827476d39a8a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITD131700256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535ac87ded5bbd54b7365d515c1f441c6be5edb6e06aa448abd99c245df37bcb. 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/NLCK42513841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17d9eeda8c7086eafddf29e6c0ea41963ebd5f119b3c1969d8eb7dbcd81c91b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ITD131501423.
Demolition - Evil Activities & Lenny Dee Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90244c067ceba3cae66e5fbd367291605c570de6479b5e699d9093a5dd592939. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ITD131000799.
To You Who Doubt Me (Mixed) - Tommyknocker Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9aa5fc2adfbcb557f0cb5975aadc61755dcf3a9910959ef64dbd3637d1ffe4e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NLS241202441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbdabebc223f7d4b633b014ae631ec4a76cd51c4a164f4fa11df66b76c6aeee2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ITD131501433.
Demolition (Mixed) - Evil Activities & Lenny Dee Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f09f70bb2d6df01ba111d69444f983ca1f5caa2cb4819bc3db7925eddf3fb69. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/NLS241202475.
Masters Of Hardcore 37 (20 Years Of Rebellion)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b18b14289eca2c0d25b1c734d1b37774551b101213f5cd2efc06f853c6b8f4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITD131501256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4505c1741706c999493fa79fb221b60a7e86b2361ad814983ecee411b2b8ca27. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITD131501389.
Hardcore Italia presents Millenium Hardcore Top 100
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a239df604f0e65bed8cf8727d89a9514527f8b2050cfefb81b151d2fc66b267. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ITD132000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95e12c0b7b4ccab8047be26ac95f520ad25063b001136c8ad6c89abb3e8633e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITD132000032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa311dcff5a3cfef7af09f61fa3faebd744e487afb3345fcb8e454551128c4ac. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ITD131501431.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6e2d32b395de78a315322f10301e81d5a4994eeca967172d2665b80f3ef45b. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/ITD131501425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f2c7ed60818ad9431e1cd4116347eea2103267b55f8eda78a48d406d87c3c2. Chain 2 (Bitcoin): anchored in block 960223 (2026-07-30T07:51:46Z), 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/ITD131501434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c6a7e72623130d99eab7716607ef6e79b7fedf68032b78231692d4bd47b070. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ITD132000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21fea7071b3613e4a80059d9b83645f266361ea498405d727adffc69604f7548. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/ITD131501398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb628b8fd96789b07b87e04608419907842095b20ee85da3f8d939d711754c71. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/ITD132000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530fbda83d206f0580581ec2509444c16ea739340c854ff232b40e62cde69cfb. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/ITD132000050.
To You Who Doubt Me - Tommyknocker Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5392f4efd5a56d2dae5b60cc79c96ce98b1f38efe0d5b9ca1423646f501b61. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/NLC050400146.