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 0x23c7b53983771b4baeb11822a210b233661696adb38c9ab4ecc476b890e533bb. 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/9f9f7073-5662-488b-b6c0-86b0ee412172.json and https://artists.proofprofile.net/proofs/artist/9f9f7073-5662-488b-b6c0-86b0ee412172.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
AFTER DEATH - ORIGINAL MOTION PICTURE SOUNDTRACK
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 0x501fc8864f5d8a567452e59f0539f90cc74155865d58352d9224a8c04658a9d2. 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/QZAKB2358254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e8c792678dbea9b71e6d229a88e37d267cc3be698253ebc89b26c03c5448b2. 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/QZAKB2358255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0418eec2b329bfd00512028f8d66a54527d8fac03b29c2dd32f9ce52b1fdea. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZAKB2358248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52b3367ec44c00162092df21dad005387599bccfe79ffc9c4282c2a34b3dd24. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZAKB2358249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828d2e3a78ad82df22a96e54d0547797cb7c9028d23b7951b7a6f2a51176cdae. 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/QZAKB2358253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ed48ab6263d5c56e25683e24a2aece89a24a59dc4d0f2eb7745803078d2521. 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/QZAKB2358239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2a8d4c759521d018d1284cbd128a1ceeaccdc457c2e78e24dc42aaad01f624. 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/QZAKB2358242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bcc78a104f4a9a8801a13eb8b823ca0f32c933a3448ab72c93b07403e6f90ae. 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/QZAKB2358230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630ab288a7a89058bb0a7bcbcd2b1e1213fdba88e66c82b0f4f8e8f7eb6e7808. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/QZAKB2358231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3aa3956853d9496392c834934044ee2106197d52b6123748d1035f482185172. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZAKB2358089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de608d0ee383ac7df4a0d77d8553f08062545dc36c6e0a94c59fec8a4bb0cfe. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:46:43Z), 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/QZAKB2358256.
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 0x1884d10ab7331c154051f1df46ad45689eee396f285f059a66f43914667bf367. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZAKB2358234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01097db660551e9981b6996bc1adef317708f394fe3b9ca436f25bd80c9de49a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZAKB2358257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e734d7687f601db9913c116b6addd2901a42eef64371a6588583f527369679. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/QZAKB2358250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f573d57faccb241b2cf53ed7337f8b98cdb1572868778cc02dc67b00e1ca0a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZAKB2358251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb75c5dad7bf56f54bfcc713f32b7615ce8711f792c72c975f4c0e9951e3b1f. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZAKB2358252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611215ffc2b72501e5f9265c25be714a1ffd95f26a8890992a40f9d7be2bf2ba. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZAKB2358244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3fa4ac7442682443f6aadfae0e68103ebd051310820278773dd141f93156e6f. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZAKB2358245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a87c8d2c570a5290258ef842fef9b59c681e5cd21d6df1895a8cc893f9829f6. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/QZAKB2358246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25bd30bc38868a22328f8694b26f578ef9b69b09edc2981ce2b316a2830ab12. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/QZAKB2358247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d91eb5962c30c58dc6842479219deda65f3def77ebed7f299fe717364d5f4e. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZAKB2358240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f4c5b5248a06edc4a62ee81e69183e50e9e6d54d92d28a031b021f0d317f48. 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/QZAKB2358241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa481c9aee5536f4fa71515de275284d6697fc4edbba7be5d426c8b22498fc276. Chain 2 (Bitcoin): anchored in block 960230 (2026-07-30T08:32:18Z), 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/QZAKB2358243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641b95873be71aea3a201fdf542cbe3eed4afc779252aeb00b5bd2e0eb2c4c8a. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/QZAKB2358236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f640d523699a3eeb8a8c9a2e02e78d1f5b8d7e757feff8e6de268334bf0466. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZAKB2358233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721b16e681c4bd011f6bf7ad93e0aa328d149b53ec1eaba407f42d4dfd674c40. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZAKB2358237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78fb4fb3c6c025724d722f65b0224fc34a1338c73be987ef0b7d8ba95b34775a. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QZAKB2358232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6612f94e0fa82fd8e601c3582712009f2c0ab5891ae9d353ddd3b0942359b035. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/QZAKB2358238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560a2a7bd387d42dbc72b0559b2d326e8d8c7a8c254fd9199f8df6cc6ceb9346. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZAKB2358235.