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 0xd83d119c0dfa21961a1ac2d0c634aa894fe22443123d8f4a573a6bcbfd2da65c. Chain 2 (Bitcoin): anchored in block 954615 (2026-06-20T22:44:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c51ba918-5a42-4664-8567-d382a98b16ed.json and https://artists.proofprofile.net/proofs/artist/c51ba918-5a42-4664-8567-d382a98b16ed.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 0x73efb859399bc41d8cb8e8ee283ab921062f1b487dd3346cdca8a0003815df94. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEGQ80901605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda13670764b8fc14b4a813fb3d27042604cf2ae928e69c34a3f926b011024de. 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/DEGQ80901610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd63e37d1c72b9b49beb6249fa9c321ba6c757617f0c12da9146921652481e18d. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEGQ80901606.
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
Let the Funeral Begin - Remix By Proteus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1784e8a8200c400240b0ba01b66182e5f8d01507aaea6c6c9008bd04536227a. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DEGQ80901618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6404d4e741c8ad0e13abb066a6d0117af5e937a6ecf735d724db0be0716653. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/DEGQ80901607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf70996ca6f89b2ed8711131e01f30e5ba39b12db397c94bf91783c054b2801d. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEGQ80901608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292e070d3cae0a1319bbd62cc9a5eecc9bed53a60e1da54a5499c19c6198cc18. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/DEGQ80901611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665bf3d473a5e521e7edf85d62e926b0319f474f70ca156d9150ffc6c05cec49. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEGQ80800111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15274eae4af2567fe65ee0641b58381ed8e33bde630a5c342e29d22388f037a5. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/DEGQ80800103.
Frantic Residents 07: Mixed by Proteus & Cally Gage
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf38d3d7dd3760fb5a3cfdae7e67108666820ec5e3f08d3336ed79238c0cbd97e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBBRQ1000203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51350f9e51dac83397e936337447bea4e75d9b336d4e6272e74e0b424dc77747. 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/GBBRQ1000208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c241247814c8b497bc7c799b05e824f96baf84261ab635a290c8a0df06169c4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBCMJ0917853.
Find Yourself - Klubfiller Xtra Hard Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9337949ec21f4e1c76685f26cc4e0a50916084fc229a6a792392a8ee32c55107. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/GBSXS1000073.
Wrapped in the Guise of My Friend - Attrition Covered