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 0xa36b4fab1185e2b068aa436e5c1edf466e24593a6af046566ee1ef5adc63e2b1. 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/9b97534a-dbf2-4979-8ed7-e624eab0ae4b.json and https://artists.proofprofile.net/proofs/artist/9b97534a-dbf2-4979-8ed7-e624eab0ae4b.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 0x8f812d963962d8d80347404bb5bced7a65d19cf32fdba2e444a538ca720e8dcb. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/QZTAZ2327929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e4bd0df18e4500ccd2610dbbda0c3864eccf9bd99b22d187abaac4f5e1cd63. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:45:34Z), 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/QZTAZ2327936.
I Got The Hook Up Vol.1 :Big Bucks No Whammies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213e48f31dc95c4d306ed88e3bf330b10d333b37b07f2cf8054cc96d71e63985. 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/QZMEN2477502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7758f445f57977a7f2ef50fce33d5e68ce4c8e2be35b46c61a4d20778c08b38. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QZMEN2477504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2f58b03e59b44daf2a5d213ce0744ce919a8b12774297d538a8c6d2ff96ced. 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/QZMEN2477510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6798e7a1352b26d0d0c718b1ab4ebed10cbb569e57cc7afa004d037be691288. 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/QZTBE2493593.
But The Money Aint Funny Vol. 1: STREETS
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a384bb78a95a9f4d90b2cd1df867d26a016a97f02bd037e06c3a1f741da104d. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:06:38Z), 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/QZZ7M2460462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a7a97485ce559c094b74e9a6e1170bcb6a3f103502609bd800898798d15cbd. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:10:35Z), 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/QZZ7M2460463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe000f290e8d9b6797b418eed6e76047cfe1e6f1269639de992e4f338ec20c846. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZZ7M2460465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3722ab65d74f3099f9488bd2e7e3a3079d8ec4b4995e138e32ae03e939b62a. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/QZZ7M2460466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9dcd3570a289b85710c5db1794d8cca8a9c56a96ac4ce33f58f470289507a0b. 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/QZZ7M2460467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eea2e5085e8b4b5d092fdc95561b09f596ac9e8fcce85bf10be270b7a255854. 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/QZZ7M2460469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3db646c1f4b2bb3faa14934304dd14ab1a0c852f77b6d215bf9d10187dc60f. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZZ7M2460472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2741a56ff512b7aa7dda3c65d613ddfa4cba1438244e0b1f5456cecb8b924e. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZZ7M2460473.
But The Money Aint Funny Vol. 1: STREETS (Deluxe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9055bd6991d664f2e0a352976191804ad5447a1a89731e7e28ff9b95205a478a. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZDA42507672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974dd2498b1cfc7b5af283ae81dfa27c7a01439d4eedbfc90d869612f8134e64. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZDA42507674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35fc1219463744bb358ba5557b588bf3bb574e641e0ab810e893a29f72ba1f6e. 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/QZHN62569078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8e797cd83e309008c0229438c597a4e0b4be76392902e2ad24fea9e5cfed14. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/QZHN62569080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aef80eaa3d07a238c747a9f580597bd83c7d78ce615952df4d8398b66c9746a. Chain 2 (Bitcoin): anchored in block 958647 (2026-07-19T02:36:14Z), 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/QZHN62569081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc85ee624b16c32acf377e7df9eba6e8cf0c26f5f2c15869ae1bcb53650f98e. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZHN62569082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065847caec5407486df1bac9f676e8f901ede5a467492e9eed6075473b2e99c7. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZHN62569083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62fa0ccdb32ffb67db08a632fb2942460391fee272a030322394bfc0c45fb73a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHN62569084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c13778e425e60a28abbad429d0f7930f659680fc4047cc6719dcc17b1cb3c7. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZHN62569085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62fba3b7fe8e3547def51e56acd67069e41b002ffd3ed1783725d50d17a814ce. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZHN62569086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389403d395a2f5e771ecb1d33137544f7b1f46f6d9fc67dea7cff173f2493c98. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-17T00:14:01Z), 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/QZHN62569087.