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 0x1c1cee5c1eac3ea943093ba1c5846b00de3ca3162062fb989a25ae62d4d1b286. 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/b29ec9b9-1bd5-4feb-99be-0e4fa7df07aa.json and https://artists.proofprofile.net/proofs/artist/b29ec9b9-1bd5-4feb-99be-0e4fa7df07aa.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 0xf9d5d5f5d32c84315842e53dccd550be4684845848ef3fab473f54d1af10ba4d. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZZ972449051.
Massimo il Boss (La Canzone Ufficiale del Boss)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ddb5ebd3e5a6c87451c3f1b42e400e30c2d68b07e5f25babd93420e57e875d. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/USCGH2501167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc953e8e1720955d7a519d40f39e9433208a669e7b8603065cd5f404b5af5eb. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:08:07Z), 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/USCGH2501169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0663ecf7f111c3dead8693d28515498f879da703f43985797f34480f19a53ad1. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZPEW2521933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a7373f9f242cf02bc2d9d642367d8a61a870a7287a0de3ed8fbd8a6dfb8059. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/QZPEW2543546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa24b56ef018e55a679223acb1cd1a4a3b5b02ea912a60c39b5249208d1a9ce8. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZPEW2586287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd6f90193bee02035e5847d9edefcc0688e3ab91f685fce51b274b9eef52ade. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:58:47Z), 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/QZVEM2539399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0977bf22ba70fc52da72543ef8a91384589b0d2c735f2703d1b607565fddc9. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:33:46Z), 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/USCGJ2598460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15067c6c6633b8976665d1c10156b0256bfe2e210067191cf68b54566148f389. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USCGJ2598461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d90b60df6341cefe6991a9a7deda758baa5356798f42e1ccb7c3827184ca4e3. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USCGJ2598462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f71f5982f22f9c4c5ab131aabb7d31c379a00592a0014a9d340dd0e74c7949f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USCGJ2598463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c47393ed2168180c92af3bd6116a6786570ae277c47ddcb5d1edf071035ea0a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/CAENV2577312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108263dbdffc50d9396f56bd19e50947cf88d9c8175ee79259a4ea8f17f447e9. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/NL9KR2480914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0002948412a03416582f09809fa70f7f07b1e06c71807f9d1e69a6a7b96496c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ESA012579376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05aa251be537e53c15fbdb9d2be1b2874f3e08158bee15c00dcb90c9d0c038ef. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZPEW2558807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a4b15dc0f9de88c0e231c1de12239a37f0a583c93a9790715b6281a6c0c5c4. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/QZLBC2506031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3abcc297d41990b4a5fe69e18a2c9fd60da93554949520a249f749da213aae89. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZTB82400075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ebb12e431c7338161db50e7dd1df4577241472f9b5c0efe11c42be677f24790. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/QZVEM2578676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6891a5e0c8d50043fda7f9c7d32b9accc6e176b57089327375b1072e7611dd4. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:21:13Z), 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/QZVEM2578687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde85f75f7bf11fae563624551d364667ac99b378f98c39473d9d005da1c9abb0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZVEM2578980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4510ce7aeaf9d7bc59aa9aaa5bed9250b0490f62d44a246c143795dfb9ff305. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZVEM2579356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f078010dd1817198be3094f324f61f41a31760a12b2a6b6ba5c1711ac8af26. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZVEM2579306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f82bfe6320496cf424b2a21191459690d6724cd915724b1445b218eda8813cd. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/CALVP2534012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff30cc2e7b53da50bb62fd851f83743d44b703146764bfc7bf403e32ace6ebd. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZVEM2579870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ff0e131304bc5f72304a0506f97c2a0924f908858bf38db378458c1795a447. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:44:58Z), 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/AEA2M2531469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb7245eae6d061f115dfd56db73821a16c5d16a2fda602e3bde85407e251409. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:44:21Z), 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/QZTPX2596594.