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 0xd031198f973cf94e3a711e922de3d8e6f2b934e7c534bcc64f29d507238e035a. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e8977327-f860-4f76-86d6-81285ac1a260.json and https://artists.proofprofile.net/proofs/artist/e8977327-f860-4f76-86d6-81285ac1a260.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 0x1156f5ffa14bd4de006b3616c048817372a46e38647df8b7f1a588cf634ca030. 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/QZQAY2408609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5bc75e22e38b97631211809264063fe92f5dac6e0cd6964fd8cd20b87a92cde. 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/QZQAY2467064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3978f0d97184823444d8b1a9bdf3290b7e55c1ab8ccd6b0d96239604b2c71ce. 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/QZQAY2478497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4388eefd1699a995115ce21f9479146000712821ccea36e2a67f7241112caf60. 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/QZQAY2455768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54faae7e1ac45e4d23cfa5b3773caf794c4e56e485d728d6c6e17481bf12ee0. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/QZQAY2466128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd35524b579458fd915c791b5966e4b62024affb524f0f12acd1835cff22e1b. 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/QZQAY2499332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1100a80557d38f0a3baa4797a018e85fc11a5ac41679403a3f3aa1ec7af033e3. 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/QZQAY2452268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa3c82e64f40f68a2f4085d878a3f4b8204e7c16e6e285a9f5382599d6eb993. 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/QM3DF2214711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1347987460cf1cf92f722d8b6077bee46c5e3cadb8b96e0a403751242fa9055. 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/QZFZ62184833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3978f0d97184823444d8b1a9bdf3290b7e55c1ab8ccd6b0d96239604b2c71ce. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZQAY2478497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18718413abfd4bd34269271de5e2a9dd37ebb865f30f929b0f9b7b1d2c4071d. 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/QZTV32449299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ba65e7b8a7a20325f7c41981f497010f5baa8016fca98653122010412f0352. 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/USLZJ2432987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39fae68a560853f2d82c22b5de0fc8fbf0181b2b63190252dfa39c7c5fadfd2. 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/QZZ8A2365423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94731c868d857bf50f26076cec17f4bbf1128f7e78b4419afdfc9cc8f19a45d3. 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/QZ2J21506622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c62084d9c914592d887b61fb6c550809c59ee91618d95e7745463e7193500a. 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/QZ2J21506832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0cd4d046abf1c29627482809c96dfe0df82176ea7da70986060e397e0c3f93. 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/QZ2J21506833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0de22310fb84bdc83074f1b6cb38a3661f63aaa788b668fc75f4c4d860f371c. 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/QZ2J21505954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c8252a6b4c734f4e14142d2757ef282bf639cafe9ffd0817e7ccd585bcdbfc. 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/QZ2J21505683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344db839eed81803eaf3826895bc06f3b85e76d788a7b764d998be9a01f82e00. 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/QZ2J21506430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905cbb0cc3a567a15d823b8a4daff3adebf868ef46f38777790e2d6db710025e. 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/QZ2J21506272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94731c868d857bf50f26076cec17f4bbf1128f7e78b4419afdfc9cc8f19a45d3. 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/QZ2J21506622.