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 0x50444e7d75ea364d33dc533609c3acdeb2eef4383fea43345ccbb86d664cbf69. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1080b9e0-1d24-47d2-8a24-ba77086e36aa.json and https://artists.proofprofile.net/proofs/artist/1080b9e0-1d24-47d2-8a24-ba77086e36aa.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 0x8dabb922f770bfad60424f52902e59c1275762ac65a86e81eff90d37196a17e9. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZTAU2280597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bcfa9e512e8f0591c3815adcc91b032220353b04cdf74964c1b7e498379f521. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:42:04Z), 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/QZFZ42364140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4a546f8f41951b6fcc121b44707cd4b552d8254cbc2a37cc15ea7dde05e7e3. 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/QZNWS2306852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd942f4909ce36246bf1b8329f7a63b11c2ef885b899f20254e2a1dc0e7657cd. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNWS2306860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec2ff7eac3ec93653e4ea02980c03a30ace7e179ceaeb4674c63b8e43ddc8a7. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/QZNWS2306862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29bcf36f0d52b69fe97a621ca35ee0504e044129e921ef982c9f2814c115fa0e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZFZ32458183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e25655fbd984cd13564247f2f365d42a70f5cc55b866323afe5650ba60ffaf. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZFZ32458186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3358bacddd4593f6fc8a8102298d98b57f2170e7135518d14af1b4413bb10caa. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZK6J2419081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65ecebfebe3fd72a3551b0cd6f82f045821851a11a53113d4642340b4929bd9. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZK6H2461547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87aa64cbeebf6fbd7c9e73d020d9c03181dfd307cbbc519ca696511131c65e8. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:41:50Z), 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/QZWFR2405971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d3d8beef78e44d99459748e39681f1f8f36b82224e76196f20dfd3ef35c89d. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZWFR2405973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead2cdf57c349000cebf1b8722b1d11d06a17c657a82c98403419d32cb7ee863. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZWFR2405980.
Blending Zone Vol.1: Welcome To My Kitchen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f8af6b37e83aea9dfd58dd4738733d9a9d356f9ab2b1e456167a93b62ac336. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QT3F32412380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb455eac5726e571518cfc688d64954a046f559da6b290ecaf1895b00125dcfa. 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/QT3F32412382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c3d8f2c9819718fdcafe5969b9b3efa7d16ad6763f8b0c4d32ee14c2caacfb. 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/QZES52559470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05efa31d3662232d2b7c6e7a8ce8960c6a800f5048e3a7722d75517b866a6d37. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZES52559471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bec615560b84200bce4d93f7a7949e2e15aad1f43e670c8ee4502502255a698. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZES52559472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4afce09b5e658c60a0e1f78bd408726a6d180e341a33ff1a5d2883c31b408a. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZES52559473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71cc9a6054d6590fdca3ef0ee757a1a569561311c51ee870588fa161bd2a1a68. 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/QZES52559475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84721060ffd34b5c87b0d51c8873ff9a003d24f0e5d8a58b3c2f0223e89f109. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:05:49Z), 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/QZK6H2524072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad93954e088f01cb6e0fd03840fb5f586eb20147c5140ca6f89efa100e365e2d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZNWX2545810.