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 0xb978a201e453785e1f6925e28317f2b65b3d848242f3b87dc0332f4f33797dec. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/81a4fe64-2717-4d23-8794-6cc71c617f7f.json and https://artists.proofprofile.net/proofs/artist/81a4fe64-2717-4d23-8794-6cc71c617f7f.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 0x8e0f770a52fa9044c708d3d352c54ec75e00919587eff38c7ef1fe5dfe87b315. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/GBWUL2463691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe457c4b095a8fd570929419b604001ebe24abbc7cb3ad22cd2e0d239288e826f. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZZ8A2480481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20efde9e77379a4428f315fda2581fdd9873c6cd2328ebc81baaeed1a56dbdbb. 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/QZZ8A2451869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80afebe13deff0f36d6859b2ed06fe18b872c1abf25e9f3c76870dab9b880b7. 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/QZZ8A2433325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d7b49f1b0ceaa4c25a32ae2a738ab0eb05793893024cc2aa94e4b7f6ffd1b6. 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/QZZ8A2422403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32864de290e4292d3e186e0f385aa4d1f6d8806153c12b3c8c63fd3412c901d6. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QZZ8A2405556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d000b450a24278759ee27948b3c0d608e7e815e816e577dc2b695604bcb7809. 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/QZWV32489924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada4dedb46d1bf2ece5e337ec0d710083e69142681c2292bdced444413c33a52. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/QZWV32483718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e0fa420848ad8507bed24caafd28ef6313c8973c9dab2f190c8e48e047045d. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/QZWV32468911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94512c083d7578dff09da34cabb507ce077c8f78cc556f1ba691964adc9ff233. 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/QZWV32461311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e13bfac1f89abde0a955edfbd51479bf984fba90899d36dd7c883b01130e9d5. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QZWV32461229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b51a901bf8667618a6eaf84dbc55c226d28342cde6073810d537c83c2f8937f. 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/QZWV32455831.
Can't Get You Out Of My Head (Hypertechno)
Can't Get You Out Of My Head - Hypertechno
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4762fdf260b762f3ed1b9291e79daf817e10226054c6900ad4a3938fd4cbff. 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/QZWDE2431453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9930edcf2e05923355164593eef7b1ef9f422a2bc85640f5e96ead4926b8c596. 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/QZTRX2443325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffeca33c455b8d71ebdeba824a4cc84f16f11bf9007c65c59f026b6bf5579a5. 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/QZTRX2429581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ddae64d1cdc95f7710593ac2cfcae83c8e990ecd39eb2e22d9ed68bd995e25. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZWDD2420076.