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 0x070cf2c150de2255c16a42c870e80ed2087ddb01ccb61d750320e794d412ebf4. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b3a3df14-4dae-4873-9d3b-5258cd083975.json and https://artists.proofprofile.net/proofs/artist/b3a3df14-4dae-4873-9d3b-5258cd083975.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 0x85f608690014f7785f2129dcb93b65a8eb72a0e28af9850aa496232e6c905d51. 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/INC622215896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78cfb590ac353038d656383cf347e3b230256648f090aca491447b17f7ed3ea1. 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/INT132400307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331846eb1947f8f1af2bad2b3b48dacf7077da08d590ba2acd25f0341ee77135. 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/INC622214256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb37b9a639191b8b2bf7c06421a3a19def85bd111b4494fd50d75be6a51ff993. 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/INT132400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700ec4450843974af25d3920789df12b5231209022ca75c6dcbf7c3a73e6f3a2. 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/INC622211913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4d9154b9728743cc5946152ad875b4a169269f726d4fe3bf93cb9dddcb7ed4. 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/USL4R2331548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b73ce7d48de5b6119d4239eadd6b79ab1552d5408a4e640d16fc7a9de085c48. 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/INC622216780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5c59e273b0619a0d6495cb7275ba6b2a71718f298803dcb58d9069538fde4a. 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/IEWGI2300468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8bef954ba749374d603437e16748dd83ec4322725a3d9dc77f2734a38de28b6. 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/FR59R2358012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861ee3cd9cf52457cd9ca2f4315160be66209c75b4f3be9779a9b18a125f10ab. 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/USL4R2256522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b5b08d3a059448b543dfa95ad9f37c46d91ea20c7f0666011ef3b43dd7e02f. 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/USL4Q2269271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dab90f231a9c1551d837f8a1a868d77aa46e6064419daa2ab7a8d5e9ff59533. 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/USL4Q2269272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c8ee6ac4f743cc354fd4c8bbd9582d8df19b1142f4e71f56e91135d60ff799. 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/USL4Q2269270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2edaedc0f37326608e9a9ee5e7cb7037839461b2d9f3ac36f332f44dfdc26860. 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/USL4Q2269273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3c436c5bf587b00ce6f2a53affb6e06a37d572c3f3d4b1e06416934ecc1c62. 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/USHM22276451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8acda6df1a75ba19f764bf49caf993d1a686e2180175965a84363a77fea0fa. 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/FR10S2289010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289daadf0e6294e1cd3bb5dd1d77eea14f875340b585d3639f67fc29aef738a8. 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/INC622217206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b6220fe9fbd72592e4d654cdbae610298bef9381ed0b6f1f1ad8335d6309b8. 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/INT132400559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb37b9a639191b8b2bf7c06421a3a19def85bd111b4494fd50d75be6a51ff993. 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/INT132400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9580bc42f6acc97126a0ccb93da633653ef196799401ce51291f204e0f729a67. 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/INT131910110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc65352848a7c22e6cd6e1db006d0f10402dcf71aaffaf561444d84bb1f5cd9. 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/INT132400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656d6d34e5d3be00b2bb9f173153a6c66c2c7af3fb1914443cd7a9226609ab3a. 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/INT131513424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776fe25356da0113b643bb6f84bf78b634a0857cd2f60a4441738fd1f4a97cd4. 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/INT132400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79def62f3013608889cd44295235819b456d8285d8030c1a3eeae21b4ab547cd. 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/INM432000042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee78dfbfbd820ceabebfc2bebb5852a23572f35eda016f0138db1dad9d3916a. 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/INT132200595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76d9b3942fc8ce84b1f1fb42baf5a678aaefefbb51c5e8123c3a0cd110ba248. 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/INT132400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e47db59e8d68657641d9bf52014f04e5672878fdb5dfb69a0ce9654ab722ac. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/INT132400080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc41a58f5c7b22a1437f8ec033424e0e42fde93804b2737296c90c701209d656. 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/INT132200779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41cdca319aeb5d495e1e53ac2c9b9d99e6490f62e9f2be125c5428a00e69d12b. 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/INT132301130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c8d14ad19d120519f7f99ab6f4c26439f1eeb5eed05a2e965b4d9029050a94. 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/INT132200261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb26632b0eb7e533b1f4075b9e6ff137ed56342707e9e5b332d0749e2f15f629. 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/INM431900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755fcc69024f137924e70b8af4644b7be9e611090e111311453cb7c54340515f. 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/INM431800235.