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 0x8cdc62c84b3e8d0d3cb4fbb3925e5eb904c18c51bdc5322ea333d9d46965e698. 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/36811947-61c4-43c9-83fe-10f6a36d1fe7.json and https://artists.proofprofile.net/proofs/artist/36811947-61c4-43c9-83fe-10f6a36d1fe7.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 0x6eb49fd4288f5029ac2d7e94eaa41a3234ddb9dc7076a3ccf5ca155e641a6353. 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/GB7GV2311230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af51b833e3aeca8b856675ceba57712623ade97c0cf50c6b8881af4b8b8fc3b. 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/GBKQU2403374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5d10523b057f6c8a229cdda2ed97bfeed4c3a67f3829f5859eba89a65a6d0f. 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/GBKQU2403375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54082d32ecdfd3c7f89d10bda468561c51fe37f44b4e978b25f626e9ff15c03. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBLV62009936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d3171630eac767866394ffb3484a02b25d9fc40a3efeccd7336a898733f93b. 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/FR9W12144434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a6ccff16afe62d3f6d8273032473224ce9ffabb9d88a1b27b2a5d28f8ec910. 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/GBKQU1952146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ffd1f695e56881a534f685346681d7f8548769658568368fcb3d810b29703c0. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/GBKQU1952148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1269977c33ef07ea4338e2db48fcd461d1dd2ae87be22028470933d239cde4a7. 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/GBKQU1952149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eaa5668889f33005723b80d4e33b302d104fab133f6bfde5e5a560239d89dd4. 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/GBKQU1952150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7fccdc3d7129bb1ca98469b1152a607239838e8318925dc58c6f42c536370a. 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/GBKQU1952154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694a0ed7567064c8f31e8d972d96375143f4350ed9b7e0ceb979fc965fa90b99. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GB7GV1702215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce5027f2da2d04a198cb377263f62057b7467bf6a0279f1c2018926b67d4035. 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/GB7GV1702202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5d3a0385339bbeeb798ced874bfd7d01e271205b11f84826701100b0e7d7ae. 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/GB7GV1702203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6927c15ca1a2660e7214a13057e2506d5fe4bf36a3f6ccce3a4f0926a895d68c. 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/GB7GV1702204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ffe3e503f2c795825f598e54fb4c1f8361c322a469b580d3fd934a4cf166c1. 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/GB7GV1702208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8325f4025d22beb8502c22c1242426211ba16878c87f25d11b6f0b182d5ee719. 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/ITX4M2400055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708d4b714f3cd22bf6a31fe66f5373d3cfb225bed25ce22229384a893da97d9c. 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/GBLV62322266.
I Never Knew (Remixes) - Nikita Kovalev Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f70cd817253ad0aac632e21884461151de0c9b43751631812a81ea67eaae6f. 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/GBKQU2398921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c2c9b4e3da77c83620f418877e15bede9144ac2fffbf33c96186c0c2c429b7. 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/GB7GV2340110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd5d4bf92d449ecd6bb922d4ea9a88e7bd2642bd8509626db4fa6c6cd267758. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GB7GV2340111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1e77fc5404cd3683c060ccbffc4305fd242064e967a0ba70f51701d1c6025a. 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/GBKQU2348010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c66ce8326327ddb544a04494ccfa1d365320c1da9eaf6f329e64187ecf10af. 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/GBKQU2348012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92acedc86f5e78d48c9f628d692dba022603e2d81fd998a5daaf04004203fd78. 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/GBKQU2333946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040aa1880c0f85aa0ee19ed293e746da72962465f15055887c992dfb59a122d2. 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/GBKQU2317775.
Dos and Don'ts (Incl. Sebb Junior Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6a2674c30ad05ad3f01a4c1480eba9c1d5651d86e5d0dc06dc4622e64178a0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DERN42300056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92610b4a4de16a34cffccac0a4eaa57b679b0a2254868f144f3a74c50a52e683. 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/DERN42400280.