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 0x7fcb3ea6a0f71afb6c7444cd217d2633caac134f4f879ec7329296d69c0880d4. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6bb383f8-8f98-485b-9656-e4b033ec7d75.json and https://artists.proofprofile.net/proofs/artist/6bb383f8-8f98-485b-9656-e4b033ec7d75.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 0xa59d00698db0bc463d8b90e28967fcf17cb0974050b56ce5c7183bec120e2612. 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/AULRZ2400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01b7ef428f91987931ee2d0e7dd996ef271f1a138d2e471e7e2d740407f8042. 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/AULRZ2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b33be3fbc5b72ffff765ce3084ad24b3e0fe5ef62f28ccb056fb393edb0ab1. 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/AULRZ2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d45292ee8e2116f11f93c9471d4b1b721857eac0994f9ff0fdd00e24b211359. 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/AULRZ2300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365d9c4b89dff1af100c7f22e05443316dad358023bd70cf071a1c6efaf6d63f. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/AULRZ2300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf01e971e8ff8b2f528416612ade4f280f8e14e167755d3555059cef8969a7d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AULRZ2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771a1a63f5a85bbc882e6c27eee54fb414b53ac035143938b5175da1f916c32b. 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/AULRZ2200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d45292ee8e2116f11f93c9471d4b1b721857eac0994f9ff0fdd00e24b211359. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/AULRZ2300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb15f70b7baa1b6c5c12c2913f268aa1b9d823026cce41c074caac6f556f28e. 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/AULRZ2300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365d9c4b89dff1af100c7f22e05443316dad358023bd70cf071a1c6efaf6d63f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/AULRZ2300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee43d7c5e719a57ab08477eaaaeca5daf1ad3d0a14f60f696c17ea5b523981d2. 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/TCAGS2361589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771a1a63f5a85bbc882e6c27eee54fb414b53ac035143938b5175da1f916c32b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AULRZ2200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b33be3fbc5b72ffff765ce3084ad24b3e0fe5ef62f28ccb056fb393edb0ab1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/AULRZ2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01b7ef428f91987931ee2d0e7dd996ef271f1a138d2e471e7e2d740407f8042. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/AULRZ2200009.
I Wouldn't Call This Success...but It's Close Enough
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe500bfb31d21a9f420ec4ad10d3a7e8fbdc4cf0500019a0f38fb83be722d383. 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/AULRZ1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a0e5703d641f10447275fd9f9f8a652f7506c97b3b1d9f1beb7140463bed39. 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/AULRZ1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75dd5eb3d7c939b312a96ad8760fb2787e87583caf32196c3934201d2c5cd567. 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/AULRZ1900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4f4548c0bd062b458fd58201724f77c2daf096f17a0f996caac9803eb3e52b. 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/AULRZ1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066b09ae246d0b3d2f9ec13edd8b23ddaa93ec1329011d6d1105f5bc587ab781. 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/AULRZ1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377f3bddbd445005e0f547c270a820f1ac821686dafc250c57361bd5dff247d5. 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/AULRZ1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4f4548c0bd062b458fd58201724f77c2daf096f17a0f996caac9803eb3e52b. 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/AULRZ1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066b09ae246d0b3d2f9ec13edd8b23ddaa93ec1329011d6d1105f5bc587ab781. 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/AULRZ1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a0e5703d641f10447275fd9f9f8a652f7506c97b3b1d9f1beb7140463bed39. 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/AULRZ1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe500bfb31d21a9f420ec4ad10d3a7e8fbdc4cf0500019a0f38fb83be722d383. 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/AULRZ1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344ebe2365f2f45f918ca978e15ea4a997cfab8e46e2c87ed052ccee3c8ea058. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/AULRZ1900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377f3bddbd445005e0f547c270a820f1ac821686dafc250c57361bd5dff247d5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/AULRZ1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe500bfb31d21a9f420ec4ad10d3a7e8fbdc4cf0500019a0f38fb83be722d383. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AULRZ1900001.