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 0x1dcf8761266ea723e4e83a0b0317f8fe749948828d6608bad20f1d213fb4ea72. 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/ac92b5ba-97a3-45b0-a304-d43ae57ae344.json and https://artists.proofprofile.net/proofs/artist/ac92b5ba-97a3-45b0-a304-d43ae57ae344.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 0xbe38926cc1628740a1dafa0d74c8538a4de1a669a4f459672a09c7bc228d7365. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FRX872188458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0b760c282d91e013061439412a7ead556a977455f958728c916728e7986669. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:47:30Z), 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/FRX872188461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc61e8641771880fcec9f89c669c4a16efd791bf47c08dfee421b6af5797582. 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/FRX872188462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62bbb5132a85ff735bf3fbc8ad0f2cf491ad81b4adb52370be8fd4a6d3055c65. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRX872188463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe14704b0ac1c9ced96a108f8314105d00fafba7bab05d50cbe5f0ecd050d1d9. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FRX872188465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffb5c7352ebc08f99a2ff7c2ccc4592a636d1163aff99c31ec952c3c07dce33. 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/FRX872123030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7826df18e89d4d0d2c146b0a80853fbf68fd01c18fe7326a8971b7c9f60eff1. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/FRX872130050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e25a73d3f160d2bb29ecd4d7c21202519871eeb78f81d62dada9a5a59c59e3e. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/FRX872138634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652ebbd8f6f6fdc925cb688363ba92840bd120ea24dfd4397af486b4b3478be3. 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/FRX872160948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d4e52512500d9c8e1210df81ddc3be33eae1b0cb9991f6d204663099c585c8. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FRX872160949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f8c43fc1c7c1ed1556656f9fabb912ac3494b5bbd2f9f2e2a72cc4073d7b59. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:07:27Z), 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/FRX872196754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9da7efef827dadd1f7f004bfbb96c04d00a0339762d75bd9cde0b80f43c794. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FRX872194083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0423d8bfb4c34573dd1d944f5709faa652207e87908763fd933e58df143257ce. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FRS182103003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8458d803190c525d7f2be17b406049257f0b3b1cd0287d9b83231fcfd220de14. Chain 2 (Bitcoin): anchored in block 957569 (2026-07-11T12:44:25Z), 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/FRS182103004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08104ecee740e0184a670cf3938316ea16d8fe8608a2c0bbae73d168552a0e8. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/FRS182102783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed0a30195769a2d188dd8e5d247f2f281243fd7ca09c65874040b9e080515ae. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/INK602106140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15146acd2acb202411e77efbc667ee039a71524a47ba7365778132514fcf40c2. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/INK602106177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e3f03048eb788ce7b5d9c82f48f13e372ef22eabc5cb18f32f227e76e3a029. 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/INK602106178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4a229a2ad4c524444515b226ae2b6e2b9de9b17206940166523b1eafadf1bc. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/FRS182125244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f9bbea8d2afd7f6630a89353eb363e71565bfb5e83dd711a546f990ad39418. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/INK602106208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69af0381ffc25299853200fcf6eda85308efc8caafd2f3b964048f061795408. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/INK602106355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844d3b8b74003fa6f7fcfb7eee599c4df6826e70c2a90c5d6265776740c42548. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FRS182169865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4603b6dd7e8706aaf1162e2ded8b2a8ad85690e4d147f4c224402f5bc25fbb47. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FRS182169879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be872c84c54ff7bd2bf7057021af0e1d9ea8b1a17fa08320cdec640ac3da108. Chain 2 (Bitcoin): anchored in block 957579 (2026-07-11T14:35:38Z), 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/FRS182169880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c6448d963a3b6e2dc6474f2a5b712c1777b2890fa3b8cbd5f5856dbde1e846. 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/FRX202228411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910043fc6f7be9d7577fb16d878018c84f6f19a760353dceb957a0dbe659cc7a. 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/INF272505765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31219f69e9303376fa267237b805bc55a12567bbcbe46d59777aef6cb87acc03. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/INF272552161.