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 0xa46e8f9a357124eb015c285f3ea1dc2a97e5e9b6028bad8bb2f1890e122c82dd. Chain 2 (Bitcoin): anchored in block 953962 (2026-06-16T15:03:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27ae2bf8-cde6-4b09-82c8-549029bf86fb.json and https://artists.proofprofile.net/proofs/artist/27ae2bf8-cde6-4b09-82c8-549029bf86fb.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 0x582f12a8021edaaec0049419dfcfb91b4f7f448c6540ac33c21bcca503076f0c. 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/QZHN92210477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c56dfbaf1001be29dc793cf188409a824149d121082f002af676d64f04ff1f9. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZMEM2215201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90de1c7a9bf5c1b3f1eaf5d76d958fb1b836bc14e4657788ab23e57866aef37. 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/QZTAT2132852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8e6a4560cb5a195a6201dd8dfacc6feb3b10cbd51eb0ef5052c69d9c19b0b0. 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/QZMEM2215208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f6a4a10938234e4b56af77ad5b63e24fa2998f8ed3d81dea023ab171345e73. 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/CH6542402476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e3d575ea545a89ec2946a0803a025f67619e80c1d46747518ac43390f80fa7. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/CH6542421852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c71866e52cf8c2aeeffb9ddd3c5f83429d8d0308b44d108da4e144f6a248b5. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/CH6542415424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5718810cc98af038ce597f38d967cccdf62173b70430524ae5b597ce8f26c9b3. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/CH6542228039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71deef01a7ef2596b1aedc4311386152b0f9dd2b8c708af89d984e3ea0ca36f0. 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/CHF032396552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9050567926510f23d6978acfd8fab3d63c36726bea3cc24aafea8495d5e86261. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH6542128172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd654dd79e10cd36e10ed632f6209c79a1b55fe6db92265d123b098270acf66. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/CH6542426656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91e58885eff056450d94438a72f713c752ef99bb66803bc358bce54913a95af. 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/CH6542189316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c5c4134b28ec17d18b20709934ce56dcb11b12021acf095770b2d5e6339bc1. 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/DE1O62445171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd5410608ead385e3166978b00ae6c28118acdd1e09a4c4943ee78ba8f450c1. 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/DE1O62445117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc285fafeb6748912ecdc195f2677948169a2cd342ab740eb99f328be66551f8d. 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/DE1O62445012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc31098375de75454fe0d75845c134ac9ad1825cb0d6a8c596148ca5fb6d8944. 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/DE1O62445103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b250fb356a67f00ce694c384541800bf5ba8f4355969217f5e81c4fca8232ff. 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/DE1O62444969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3327effd1a89441c4e0c23c751cc7e0bb42320242caecb67a4df018b540db218. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/DE1O62445153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84334bcd0b979832f8102c023e2ff348def266f0636639a0aff1a41aa4f82c90. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/DE1O62445364.