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 0x456ebe02454f699463e005072b8b95df524fcabe78efc810da9f4f1630684d48. 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/929142a5-5c1d-470a-82e4-cd4fbbc4922a.json and https://artists.proofprofile.net/proofs/artist/929142a5-5c1d-470a-82e4-cd4fbbc4922a.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 0xdc4a47ea7f9f849f198a647c321e2e24bc3a79a2c53d29108a97e3c8b145a525. 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/NLYK92300140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f800dfcf2b8409c3b89220288d0b9a469e8aa73cdddd285cebfd405490cde9. 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/NLYK92300113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5567bb3889b3a8f284d472b20d6e191b7c6c7b3bce0d98faf088cd5e19be1a44. 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/NLYK92300102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751e75769c1e9a410759f746b92feda3743d93a8f9de685107d6da5187cf99ba. 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/NLYK92300173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62bb08eb700552ef0972674e2bb6abe75f8d833ba84285776bfc63e97b1ad332. 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/NLYK92300154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb1aeec08041d90d5d7562b8d2f4d985e73db9bfcfd02c8b08c86d1f1f58488. 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/NLYK92400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44af31fcc4fb439ab928eb496c32b0ce3edbe302bf4994816017f2b44a7bbd8. 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/NLYK92300099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486e624fe1623c37a152dde9ca792dc4253c14299e5f25f8550252eb0fcb046b. 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/NLYK92300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763eff0813d4d4e57319444026c01d10edc5eb298c5ec8c62588db5d8beacc69. 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/NLYK92300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846d6e7f3019123b7c286c8ca192fa08cb062e9ce994e7b033a539a0939ac128. 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/NLYK92300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2887343f06b86a71ed414577d87addc79425086459c29753e497418a65d6ec3d. 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/NLYK92200152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2599ee1545e5c58e29fd0b6ec40017abe83a3715cd314574cc6dc1410c6b18db. 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/NLYK92300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f66fccdc9776e537546864474fa89d057a02ed52a04c4c80605d97f2285909. 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/NLYK92200146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854e142e0bb0afc79e7c83dc334d912aed101ed31ffea30edd3162ea337dccfd. 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/NLYK92200145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39bcca10b56f723fbcdbe72c6e098c7b607ca46413e4e6a51222e33115d11347. 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/NLYK92200132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f2b64fd07a270ad32b1ca679c20bfeb0576f28bd9faa240fad979e05300eef. 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/NLYK92200128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1373ffd066e7fbdfe7cc3ddd24754d9463322c54a43eb5b555fc70ba5d342e. 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/NLYK92400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb37af75338bfcd3c800f4ee7d23e2f5ae9a9ff3b6aeffc9c27526a69d7d74e. 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/NLYK92400155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee67e262038b3bd71ce3c6ac1071ca4946f29da8ba118e50b44398a8966bf99. 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/NLYK92400141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51de42281f9a36f47ac47a833d94320db740dd15bdd9d68ef2c838f46edf63bf. 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/NLYK92400132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0787fd1425cbbf543dda15929faad26d6c608c5caf6af1b02c8469f2ffbf779. 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/NLYK92400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0bacbf29e0b605455b94c13dcef878721483dc81e77dfe5508ea0ddf5a9ad1d. 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/NLYK92300204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648a82fc40aba8c39fd1887f87cb773bc88d88f3e4a216b882d950be63d7dd84. 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/NLYK92300196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1768f8d1a4fb6d03d771e7fd75446416e1d9d3107e97e0ebb075ddfd668abdb5. 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/NLYK92300145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6687bfc51531f20ab6fcf06fe5f0030732b5d46c68131bed102a7176f8e2423d. 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/NLYK92300109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2882ba149480dcc2ab89eab455888782b5bd1e3124b1ce9187492bad564bfd13. 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/NLYK92300076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e22c956c547f995cdc97543382afedfd58d5aab58f0d29d3935d68e5d6fdc66. 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/NLYK92300066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf144aa6a82db6edf4024e192dfe49ca0b9cb5a9bb6d9e1ad635d675b2547fde0. 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/NLYK92300061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b78f2ed63c07bdcf09b02aa3a0127a3bc4c3f2d5b701293427e9a618dcc21a. 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/NLYK92300047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa1dc83b3c7b69cc568727f3fff5c5bd4a84d1dbec1d23a2566fd5ca9cde305. 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/NLYK92300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed21e7f18293ad9b2125921bc2944418154712a56f394db7c07fbc294b717d54. 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/NLYK92300033.