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 0x86068ec1c96526026fd3d6c7c11016e21bb7d55439b89dfec13dc4249a2771c8. 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/72d0ab41-9fc0-4b72-9f2c-ce4f5c1dcae2.json and https://artists.proofprofile.net/proofs/artist/72d0ab41-9fc0-4b72-9f2c-ce4f5c1dcae2.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 0xff3733425b5e321d1fd92b900c21074a4b36f96dfa6cc3a3c1976aa611c8cba8. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T04:29:03Z), 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/QZFZ32154775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36acf2ba15a68e5355d545161f49dcd1a9e65c640586171349484f519ae4bb5c. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZPLS2108654.
Digno das nações (Worthy of the nations)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90704070a10b91a1498c1fc62e79ade97ccef46d144196d1df6756c3c327888. 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/QZMEQ2389310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5fb489675acb9e8588fcd7f9e8ce19086dd5bb8a05a67367c9a8c642c1d650. 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/QZMEQ2389312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb306fc73a3c8ef0113466efaa287136e7443984d7b3112624d77252172dd38. 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/QZMEQ2389313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17da2d7ad613a5be787d0956c51345d90b96a929b6a357bb9c35e30d45e02a4d. 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/QZMEQ2389314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5362c809b60c61d025b50119119d7db33b742df2bb661dcf64d01eeb57f66f37. 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/QZMEQ2389315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d9f5db86f14d5552ccc6b1cbcbae618a1cac314d4469e9a2668ec661921ec6. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:10:43Z), 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/QZTB82322946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec60ca9017449336e8be05ad6d062ad8c0225117ac4c0f36fadae7f81b6de44e. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/QZTB82322948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe8778a1f9ecc1a80d78be37f8026f28e75a362bebfc673baa59825bde5e183. 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/QZFYZ2485325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19429aabda54f851d36b5e6ad98f64fb89e0961c68d464177296c4cdd89b0bf6. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZMEN2403340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55603062662f3c8148c2ca6ca560d9b60af14de701abb0ba63c84c86b0ee8da9. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZMEN2403342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f505c13a6812332daa48af620694c0f0ad59e72fe0a27201cc7017d21586f7. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZMEN2403343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f93e3d2906c7c11e8b473340fd3f220f1b046ecd974362e42fca7ba3646e68. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZMEN2403344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e3960c2d5d9b26c87e596935797fc849ba4d6d6fc1923ad9313858a54a285c. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZTB52467015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f23513452e95a0c5c0745f6891538cccb7dc576975b9f39eb1efcc2d480d91. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZTB52467016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083e981773d6436acb0c24344deb46db33ac9314535581b3f6ddc1a91d3e1ae1. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZTB52467017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c06d1045dd31c48d4ab04eae03ce73d44f93b51fbe5b44114444671a75a9a2. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/QZTB52467018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ff21c7605d8ff4424d899a2849178d57869f0e9e9fdee04a182e517804cf68. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:07:13Z), 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/QZZ7L2454104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ac3cd53d1e280706b7494a8abf869db1ba561d05df3c5bad27d2c3acf3162c. 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/QZZ7L2454105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c65a7c8e325151b57156992d052e1a5e323adeec01c733b93db21c14e466c17. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZZ7L2454106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6b5e09576e286e66a57722296978825f587410cc6a8f116f3918f8c35ea972. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZZ7L2454107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6029f1bc58daa09ba3ed22b3302a9f90b934c4982b4941ef6404e052b082db4e. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZZ7L2454108.