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 0x8e062e272516a532be0a1ed94e28215255e9d85a602f509505693f5ad14a5da1. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fde4d4f7-2eb2-46a6-8979-d9aa0b9adbdb.json and https://artists.proofprofile.net/proofs/artist/fde4d4f7-2eb2-46a6-8979-d9aa0b9adbdb.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 0x09c860375c5d9ecddff41686aeb08f69338453a5334601e070cf8755b83a339a. 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/SE6HN2203230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cec3fccdeee7f2d6d0aef328dcbc5d6866d2a998b0c981125e4cd1dfb78d8ac. 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/TCADF1744950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31901fdbc3843fb52e7eec2708395e23095d828e4f586737012264be52f6c7e. 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/QZFYW1959242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585ef2f210058782a4a94b4039e44b14c878ab811b208b0f8039f27ef9ea2cc9. 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/TCAFY2188177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59b5f9734856edc34fe07b7fd15e34e38858c2b18bb31e849245975255e483a. 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/US7VG2125080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424de436eb4bfd69144cc9ae43857b5e6aabb0603ab5f04766da78fe30e08371. 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/TCAES2066119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59b5f9734856edc34fe07b7fd15e34e38858c2b18bb31e849245975255e483a. 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/US7VG2125080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5d4483e8f7f0664a8354e060c5122f63edcacd130f69b7552397c347b7206f. 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/TCAEE1917220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cec3fccdeee7f2d6d0aef328dcbc5d6866d2a998b0c981125e4cd1dfb78d8ac. 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/TCADF1744950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6b6a853a361e96face8a5e52b088a4aa3df8d0d93f4767f043e26b154a12e2. 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/TCADT1868294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee39a765cd8dcd924db6e3a9461d5bfcba3933331b323c92c263392e4af72e9. 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/QZHZ31978370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31901fdbc3843fb52e7eec2708395e23095d828e4f586737012264be52f6c7e. 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/QZFYW1959242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290dfb30ac032dc1d84814400e49f5096a425570a65a191e6f4f315e6e08e7c2. 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/QZNJX2081746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4332e39b492b33f6de2df6ec297c866f019490b92231da655ad42cc80975b55. 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/QZNW72406419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdba5bc135d4eeeacd04b211eeb36b32d4ecf6ee85ed0018c0c28401a8448f25. 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/TCAIK2420763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2037dce1b7a533781343f8f0237f29c951ef918894cb7e4cc8b33cdd3c1921. 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/TCAID2454685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16839324b72ac8f7181fa7dc47de96a3a2016b6cc07989301f416cd9cb09de5b. 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/TCAID2480228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c476f5bb5a9da45d822b02cde562699b35d3194a2da09a8b0e812537d6d989. 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/TCAHT2456405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac963da1329c15a7fb6990050fccc86ad149565ebf66e696c1715eafb4b973c. 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/TCAHI2327647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbfe2d7b3aac7e72f26b70b30576ad9600dcc026f22fbd86947b576c1b487c95. 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/SE6SA2300508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4caeb366146e5ea0f70513e292ef8b279b92c6cd656a856ad87fd5f5ecfced5f. 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/SE6TI2340066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c16a0c542a053118da55c9c0371e23f0e850e7d357472bea6fd448c97b2d12. 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/SE6SA2362644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc5df14fe891e2b727f0f8442357ad1a3649c3e58517d0b310b4dfbc9efcad8. 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/QZGLM2324276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf346549b5cfbc28c7e743cb3a8eb85e468570afd836ebbde440dd71998a68731. 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/TCAGI2232135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ca7d92940f90abd93aa415d44dac05e52355d17e79bc83eb6c0675813e5ff4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ES71G2202756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe2a63f63061d2c45249a629e463383d714c93fc1744233d4dda8039add968e. 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/SE5752296883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf258582a128678a5e54d08fd1b87ef5c91e8e1ab97f9a4adfca70a8578bdab56. 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/SE5752296884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c331342cf7f5a85c51714559569ea82bdf168cb4dea9b786b4b0feb4a22f50. 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/QZNJV2184501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3ac795a7e5ee78b7852c57a70f3e8f7610610aa50c7076e6c19de83f6e9487. 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/TCAFQ2197891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85341b05f2ff4eb2a685a90a5c7144a9b2f5e094e861276db8aaf75b8a5b283b. 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/QZHZ62153402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a802282d7885f44e512701aad47a1b1f3e8d2942232b75218b570497fcee415. 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/QZGLM2123054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290dfb30ac032dc1d84814400e49f5096a425570a65a191e6f4f315e6e08e7c2. 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/QZNJX2081746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc22debc948c14e5f2b52f86b5eb2e2866b6a7052aab5f6471f8ebae6e55cd25. 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/QMBZ92028186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbbeba618e228d1dbce79a98afe2944b44b3694012b921bbcb91c7fb06dc74fa. 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/QM6N22075978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424de436eb4bfd69144cc9ae43857b5e6aabb0603ab5f04766da78fe30e08371. 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/TCAES2066119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f455184797f4d1d725d02cec4f5ea40b5725768ac3dc7c05b4a2b5b15480dc. 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/TCAEG1924993.