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 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 0x1cc4bac30487c69e8fe444dd4f41bc3c4776d9b7eef2783e832fcaf61c9b0fe7. 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/f38ed0cc-23e2-435d-88cb-4467aae65db4.json and https://artists.proofprofile.net/proofs/artist/f38ed0cc-23e2-435d-88cb-4467aae65db4.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 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 0xcd3537f1789926a416900f4b8bf000edc10c79a1f4bd9e748fefa541029f6731. 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/GBRD52400189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d62bb8d21278ee8c562664d8c18b8ca5155362b26331c288483be8c92dd0115. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GB8KE2408625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa435ef8800661f8ef5031f512bf4e6afcd2ec2227edf4ea61e2c2d0343946e54. 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/DGA0L2396141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1198e6b915cafa36c0f1c437a898920c2af4eb139b51a5a8f6a4ae2691d5bbe. 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/GB8KE2315070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87ca44408283563b2870768d2a6e242d50708d5d90312b9afe3219a39c03d9d. 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/US39N2300783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd03bcc474cf21a7e10faba4a5134c60fc3ac816cf0576a3e8eb8b6caa2c598d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GB8KE2215620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f53402e2dc128d1773a0f6e55ed0618c0cbdba78727bbad430ae69105c293d7. 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/UKQHJ2200058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e4e60ebe0114d8b94dff488ea79268e3a6b10bcdc9e47d009770b695254c99. 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/UKNBR2200061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ec71434403cb98e7cc0d5e657ae45500dc976e96aacedd4a85ee91b14f2a99. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US39N2201051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a6ed2e10ec97b85b88bf6d09b7bbfe33b4a422bd7c0ea8a02be0a3abad0633. 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/GB8KE2163117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77338f504272ad383e938fca29196562f55f745f3dcae7d89d438b2a6b8ce119. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:04:07Z), 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/GB8KE2157440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ac25c096f288472a759545b60d3a4b25c8ff86acb62f80a7921f4ae72d7e3d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBKQU2022702.
Something Like This / Can't Go to Sleep (VIP)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f3126f98ba6cdbacab0a6d757ed5af96a0944cae73287aacdc1307fb4abd90. 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/GBLSB2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8503caf85798f2f016e145f62a3cd50c83903e6b1524d4836786ac2d13a6e5bc. 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/GBLSB1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b5c3f5f9d3817e1cd8aa08821612ffe2166e4df66fe0d091cf777a98877904. 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/GBCEQ1800092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4f7adea4154ef8f783457a4c2de2fa79cce82fa1a368275dfb26b2b74a5056. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBLSB1800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5ca88d3fdc40f83d5a0eb326d7bde8af50774ff450c884d1021cb1c6cbe687. 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/GBLSB1700029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294b45a8baf94a368edf1ad3fec8c9597a200b1cd7974f81e74c2e24dfd25093. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBLSB1700033.