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 0xd602b43902892d13f1f16c1cfc10d1a5c9189823236cdf42f92a6952f4eaf155. 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/79da5527-6a91-4190-a5a8-98909f2cb33b.json and https://artists.proofprofile.net/proofs/artist/79da5527-6a91-4190-a5a8-98909f2cb33b.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 0x862ce361208c5c862860cab3ba938d68ed5b1aaa54dc0ee853223438529bae37. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GB8KE2304956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe5882f6654441db8caf28876e50573b54d23b85a454817a434133b0d5e55a5. 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/QZTAU2315070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf6dda3b49920021cc0dbae4f47596bbc657a475b3e6871275389fa58592b1d. 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/GB8KE2150731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134bfb2def851490d6128904bb639f6713485a4917f9e55a0724fb1d970832db. 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/GBLFP2104642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef32c67fe5c6f8d3c22e37cca9d2d429d249542eba589bc53c109be329f41c5c. 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/GB8KE2200679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e354f04c6b1fd8957f84c556aa20928c7ee7d19f3fcf4c2c79a7ef51826ebba. 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/GB8KE2161101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e354f04c6b1fd8957f84c556aa20928c7ee7d19f3fcf4c2c79a7ef51826ebba. 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/GB8KE2161101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf045d923e94f2d53934e6413e155f41882df7ed3278d12542a216087cced09b0. 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/GB8KE2056738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1266d0e5e4946e6ffe549b64327977a22eb624d538c65ae9c2b15420f9be0e. 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/GB8KE2200676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefab7eb6448c99892528f5c668fca4081d0884862e24fb582f631ad69ffb1d9a. 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/GB8KE2200678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef32c67fe5c6f8d3c22e37cca9d2d429d249542eba589bc53c109be329f41c5c. 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/GB8KE2200679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458f51fbf668dff02f7f6f9d216f161c0361d3354e278b9c8387112d37c1359b. 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/GB8KE2200682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1266d0e5e4946e6ffe549b64327977a22eb624d538c65ae9c2b15420f9be0e. 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/GB8KE2200676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0475cd4751aeceaea4d575668a77220368b1ccec7accf97d331fe6b40bc8781c. 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/BEN581900059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5561e1587813312aca87d309428e0778c78a684a678d936060cec52da9d67c90. 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/GBRD51800189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9092af306f02acb900f992b523ed206d12dd2745077c90cb7ab872d5cd447b58. 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/GBRD51600020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df3dddfe5595e7570a74b31880782c1ce55f2cf8405b7ad2498e89be8ceb3ac. 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/GBRD51700332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80dee2afed2cf3a55b37796c41214f5d5e4e2133548edeae1630d5e00f1b76ab. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBRD51800101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x766af5137824f3724e01e207a98c477b14001b864d8f4340bac0307d9c362b0d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GB8KE2402753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2abdc9a65724f52359d0cf82414218e2269515d96502bc5c8a14ba7283c0a4aa. 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/GBRD51800100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89acbcadc3135b065dabd307051d83d6d32e7cc785834d3a1e7e42df53e81731. 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/GBRD51800098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c54d3b8f7bab573facb5d667e5a384e115ff21c487fc0dfd1e198c6b3a80a8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GB8KE2156829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbbd055a9f893bf542697fd18294ee72da8c9283927e8df4ac5601d9d1be37a5. 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/GB8KE2201499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6856ce318c4919b7d2cc9af559adc64eb18ecda78f96d1c7b98d2838b4b9ebc9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GB8KE2201500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9be2e68b450f00edce893630ccf6c95e6fdeaab96112daa64ce948ad2ff357. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBRD51900307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e56d47957e5aa23199aebb99309cd6a91572904a7ae1e6570e26b741bfbe13. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBRD51800103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe794dd8b2813286786eb9b8694f5c78cc6ddcb257b8d16e9b41e2093511cf657. 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/QZ8252049076.