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 0x2ccc9e97213268f4e84a9ab406fe877e599f0dc916d7b87aad99e451eac6baf4. 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/5a51ec7f-f932-4e96-8ed0-a42d17d29a62.json and https://artists.proofprofile.net/proofs/artist/5a51ec7f-f932-4e96-8ed0-a42d17d29a62.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 0xc0d20855968d0ace978b3f1c639972d930bd5d26ac981e52a9a6c55d8d6e6097. 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/USCGH2194356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ee01af4a84dc351cfac27fa2efc675984803a85ead7765e4675068f1823cc3. 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/QZDA42019500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80000e108652c30d9e5e08b7f9e228d0dac4ba5f6dc1d3f9c0fd0db31d6cfa38. 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/QZDA42020589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb73ab82431162d8171b54e828e7e7f121cbc746f0c6ff3939c15bc9ed6313bd. 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/QM4TW2506134.
Los Shishi (feat. Julianno Sosa, Marcianeke, Harry Nach, Bryartz, Lleflight, Aqua VS, Drago200, Simon la Letra, Shisosaloud, Zewa, Keylon, Barbero Exótico, Andre Alpuritano, J Cap, Bastian La
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x613eac3ed18b9123bf8d5c677617f43ce76d1bb4658cce80f5278bcd63b274bf. 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/QZMZ92303745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588852b2d38941ea1a5148ec394944a5738ce98ec835f3b8efb080c0aabdda3d. 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/QZMZ92303746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a76210f3ad6e7e3c4a83702f6c5020bab6ddd0ba9a5c3f0e8a369e18d7dbd46. 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/QZMZ92303747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42c6a576541ba1296b8db0f26e9036f7319c85e15c0f5a63899192224035f72. 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/QZGLM2360783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126b0642c01e8c22ab106bd49655fede091bf965584c6daacc927cdbaa3bd29c. 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/QZMZ92303748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0cb79d2a70c9e03ffb9ccc31daf1c307a611d24ccdfc7f3a18bda64149e9083. 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/US7VG2363135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda9d443d5d5b5e2c04843d4d23a3419c053ce1be54b1e599f4379fb442f43b0. 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/QZMZ92303749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a283fb39c08527cf3d45ca0320b7d469d5ea55ae4a8aa9a541b04577ae1f84e. 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/QZMZ92303750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9f6f011705766bdcb318fe16a3a6ac44879b1747aeb431e9083cc94888f73f. 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/QZMZ92303751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2643ff58192b721a70302e4596e6103ef019ee264dbd80f1f79c13e0aa73ff57. 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/QZMZ92303752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a469b474e875f6f9419c1f40cc6c52bf5c81e498ab5f5fae95cabd7f4fe8063. 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/QM4TW2360643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262a6408b19abbc453397166b74849e1dd909baec2ed9bb7ef29210a92cf0195. 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/QM4TW2360648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1b29013b0761a84cc0b29196b25341994a079fae4150ff34219f9e49f30f45. 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/QM4TW2360649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398b586cfc566cb731ce88287e8d2aecdc7d4342d5f29ce81d0c61604358d713. 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/QM4TX2415176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca07c8e3964fbe3d76b284862f44f4340809ffbda899c3d087cb2bdeb7962e2f. 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/QMFMG2345421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe575f44c19d1288eefcb10b57ad29756ea05982fc9172f7cd7449eed9675dea2. Chain 2 (Bitcoin): anchored in block 957253 (2026-07-09T03:08:40Z), 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/QM6N22545637.