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 0xdfab17facbd5bf2ef4504877d970aabc28c34a0e9d11c5a849db59e41a4003c1. 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/4dff5f33-c0e8-4594-9f9c-74235aaa145c.json and https://artists.proofprofile.net/proofs/artist/4dff5f33-c0e8-4594-9f9c-74235aaa145c.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 0x0b2efd57fe34041c94a104bf9c0ba978082bc20efe4f586127d694a450548990. 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/GBKQU2324231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435d76ea5f0eaa7e3e4541904cade0bfe43c856c02c806322463689525f056b5. 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/GBKQU2405593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4965ea695229750faab2f75a223b9d915f9cc3f4584a4f99195a49539e2de939. 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/GBKQU2405598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc34121a26534eb9640d8d82fe61a0343b3851678a2f432b9a100e65f9eea0fd. 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/GB8KE2202378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6efeaee4004924cf006092872d2d90c3ae0feee44049885f480c39a64be9d69. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GB8KE2207880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415ecf6c3a0e14bcb5af8d80d4887359f30491a73061435d04592eefa89be71b. 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/GB8KE2207882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340e4198f2577d21679a0a7626a5cf801e65dc9181f3eab82378b7541ca1ed51. 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/GBKQU2445122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba39fcb1572ce68c20afa66e3293a4ba71df0e7e18a4e005cead27ed5138d7b. 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/GBKQU2445125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99375ce9374befc5442446c980931255066041638c73afb325722abc44e70989. 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/GBKQU2445127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x663fff113aa9a9f2048a90fdd2b5c54252eb2beb0da632573aa4badcfd27e62b. 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/GBKQU2445128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de726edda72a0b9f2ec2262b2fb8268ee4713d124e01f4e063700f143f53b86. 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/GBKQU2445129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef79ca9f2d7bfb56883d33a08cc5922a1bdd23622282488b387116e2072b203. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/GBKQU2445124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808f296d36a6aa8a2eda5ea47f2343e06b1dea5200cc17f964594c72c7d9d9c1. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/GBKQU2445126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade0c5982820334aadebc3c08076e528b33f8e208100bf31e61941e6f72b6ab8. 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/QZTAY2434250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340e4198f2577d21679a0a7626a5cf801e65dc9181f3eab82378b7541ca1ed51. 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/GBKQU2445122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe736e1c91dfb8f52f0271117fe5a733716a85f64078cbd375ceeb1dfb43a313. 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/GBLV62311488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a745076845525bee4e089c0055eb0f12f3bfa935632a3ebc3b0f86fcf7bb0aa. 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/GBLV62311489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6b87d10b33e05ec8761821bb683e79e238045e43c251f3c40457678779f9e3. 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/GBLV62311490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f85d3e6ce6b1ea19fa616fd9a7bc4327ebe876d18f5358dc827fc4a274ab02. 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/AUFF02300496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2391361e025fa755042e388fae59374f69bb52ffb28ff5cadf699f1e0b8b2e92. 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/GBKQU2385810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a23e7ecb8781a7a111c44598d68a7f48872004549b8e1a38e668d64d4dd84c. 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/GBKQU2385812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f54d1ac5d28d782ca8637abf3f89756635bd2908518f3b5b50d683db73795bd. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCJPW2396745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc780dd98240ffbf91ef7bb6245c67fe34995e560f79c8b808035a498fe8468c9. 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/GBKQU2316559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85519ad36d78bdcec01fd2b393fcba132d772d1b13503c95703438d2849d5a18. 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/GBKQU2324228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8461744083cb81cc79d024f332996a0db55ebc864f43a8a4772cc2c808172d. 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/GB8KE2203701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13dc50e8b0f112b3d80cc8e5f8684861b63953fde6f9ea601a515f784dc9056d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/UKN6K2100747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb79801ccb3121d68132662b3b9cfd4865e3c0df4af2dade0c0ef62a60820d34. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/UKN6K2002970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d2d61513129303799feb5d14e62dee860e8fccea252941e52e320399dd1060. 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/UKN6K2002973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5145cfbc77e65bad129511fd89c19d2ea3a68650e0ade32c6dd3ce73c6c71cae. 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/GBKQU2105442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746278df7559ba770a0f63e3edaa6dcdd0ed6d80fe6ccfd9554d9c56d1b09fd1. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/GBKQU2105443.